Bài tập ôn Khối 10 các môn Sinh học, Vật lý, Hóa học và Tiếng Anh

Nội dung tài liệu: Bài tập ôn Khối 10 các môn Sinh học, Vật lý, Hóa học và Tiếng Anh

1. CHÚNG TƠI LÀM VIỆC NÀY VÌ CÁC BẠN, CÁC BẠN CẦN TỰ GIÁC VÌ CHÍNH CÁC BẠN! Vật LÝ 10: gv- PHẠM HUY TRƯỜNG CHƯƠNG 4. CÁC ĐỊNH LUẬT BẢO TỒN CHỦ ĐỀ 4.1. ĐỘNG LƯỢNG VÀ ĐỊNH LUẬT BẢO TỒN ĐỘNG LƯỢNG. Bài 1. Một hệ gồm hai vật cĩ khối lượng lần lượt là m1 = 1 kg và m2 = 2 kg, chuyển động với vận tốc cĩ độ lớn lần lượt là v1 = 3 m/s, v2 = 2 m/s. Tính động lượng của hệ khi: a. Hai vật chuyển động cùng phương, cùng chiều. b. Hai vật chuyển động cùng phương, ngược chiều. c. Hai vật chuyển động theo phương vuơng gĩc với nhau. d. Hai vật chuyển động theo hướng hợp với nhau một gĩc 600.  Đáp số: a. 7 kg.m/s2. b. -1 kg.m/s2. c. 5 kg.m/s2. d. 37 kg.m/s2. Bài 2. Hai vật cĩ khối lượng m1 = 200 g và m2 = 300 g, cĩ thể chuyển động khơng ma sát nhờ đệm khơng khí. Lúc đầu vật thứ hai đứng yên, cịn vật thứ nhất chuyển động về phía vật thứ hai với tốc độ 44 cm/s. Sau khi va chạm, vật thứ nhất bị bật trở lại với vận tốc cĩ độ lớn 6 cm/s. Tính vận tốc vật thứ hai sau khi va chạm.  Đáp số: 1/3 m/s. Bài 3. Một ơ tơ khối lượng 1500 kg đang chạy thì đâm phải một bức tường và bật trở lại trong thời gian 0,15 s. Vận tốc ơ tơ trước và sau khi va chạm cĩ độ lớn lần lượt là 15 m/s và 2,6 m/s. Tính xung lượng và cường độ lực trung bình do tường tác dụng lên ơ tơ. Bỏ qua mọi ma sát.  Đáp số: F. t 2,64.104 kg.m /s, F 1,76.105 N. Bài 4. Một khẩu súng trường khi đã lắp đạn cĩ khối lượng tổng cộng là 6 kg. Khi bắn đầu đạn cĩ khối lượng 0,01 kg ra khỏi nịng súng với vận tốc 300 m/s so với đất thì súng giật với vận tốc bằng bao nhiêu?  Đáp số: v1 ' 0,5m / s chiều dương trùng chiều đạn bay. Bài 5. Một học sinh đang đi xe đạp với tốc độ 1,5 m/s thì một học sinh khác đuổi theo với tốc độ 3 m/s rồi nhảy lên yên sau của xe. Tính tốc độ của xe đạp ngay sau khi học sinh thứ hai đã nhảy lên xe. Biết khối lượng của học sinh thứ nhất, của xe đạp và học sinh thứ hai lần lượt là: m2 30 kg , m2 10 kg, m3 50kg. Bài 6. Một xe tải cĩ khối lượng 30000 kg đang chuyển động với tốc độ10 m/s thì đâm phải một xe du lịch cĩ khối lượng 1200 kg đang chuyển động ngược chiều với tốc độ 25 m/s. Sau khi đâm, hai xe mắc vào nhau và tiếp tục chuyển động theo phương cũ. Tính tốc độ của hai xe ngay sau khi đâm nhau. ĐS: v 8,65 m / s. Bài 7. Vận tốc của một vật cĩ khối lượng 10 kg tăng từ 4 m/s lên 8 m/s khi cĩ một lực khơng đổi tác dụng trong 2 giây. Xác định: a. Động lượng của vật trước và sau khi cĩ lực tác dụng. b. Cường độ của lực tác dụng. ĐS: p1 40kg.m/s, p2 80kg.m /s, F 20N. CHỦ ĐỀ 4.2. CƠNG VÀ CƠNG SUẤT. Bài 1. Một học sinh ném một quả bĩng từ điểm A lên theo phương thẳng đứng. Quả bĩng rời khỏi tay tại điểm B, bay lên tới điểm C thì rơi xuống và chạm đất tại điểm D. Trong các giai đoạn chuyển động của quả bĩng, giai đoạn nào sinh cơng dương, cơng âm và các cơng đĩ là các cơng của lực nào?  Đáp số: Bài 2. Một người muốn chuyển dời một cái hịm 100 kg trên mặt sàn nằm ngang đi 5 m. Biết hệ số ma sát giữa sàn và hịm là 0,1. Lấy g = 10 m/s2. Tính lực và cơng tối thiểu người này phải thực hiện trong hai trường hợp: a. Dùng tay đẩy hịm theo phương làm với đường nằm ngang hướng xuống một gĩc 300. b. Dùng dây kéo hịm theo phương làm với đường nằm ngang hướng lên một gĩc 300. Website: www.thptthuanthanh1.bacninh.edu.vn
2. CHÚNG TƠI LÀM VIỆC NÀY VÌ CÁC BẠN, CÁC BẠN CẦN TỰ GIÁC VÌ CHÍNH CÁC BẠN!  Đáp số: a. F = 122,6 N, A = 530 J. b. F = 109,2 N, A = 473 J. Bài 3. Người ta dùng một mặt phẳng dài 2,5 m đặt nghiêng 300 so với đường nằm ngang để kéo một vật 100 kg lên cao. Biết hệ số ma sát k = 0,01 và lực kéo song song với mặt phẳng nghiêng. Tính cơng cần thực hiện trong hai trường hợp: a. Kéo đều. 2 2 b. Kéo nhanh dần đều với gia tốc 2,5 m/s . Lấy g = 9,8 m/s .  Đáp số: a. 1270 J. b. 1895 J.  Hướng dẫn: 0 Thành phần trọng lực: Ft Psin30 500 (N). Lực ma sát: F kN kPcos300 8,66 (N). ms a. Khi kéo đều: F1 Ft Fms 0 F1 Ft Fms 508,66 (N). Cơng thực hiện: A1 F1s 1270 (J). b. Khi kéo nhanh dần đều: F2 Ft Fms ma F2 Ft Fms ma 758,66 (N). Cơng thực hiện: A 2 F2s 1895 (J). CHỦ ĐỀ 4.3. CƠ NĂNG VÀ ĐỊNH LUẬT BẢO TỒN CƠ NĂNG Bài 1. Tính thế năng trọng trường của một vật cĩ khối lượng 10 kg khi đặt tại điểm A cĩ độ cao 1 m so với mặt đất, và khi đặt tại điểm B ở đáy giếng sâu 5 m trong hai trường hợp sau: a. Chọn mặt đất làm mốc thế năng. b. Chọn đáy giếng làm mốc thế năng.  Đáp số: Bài 2. Một vật cĩ khối lượng 3 kg trượt từ sàn xe tải cao 0,5 m xuống đất nhờ một mặt phẳng nghiêng dài 1 m. Biết lực ma sát giữa vật và mặt phẳng nghiêng là 5 N. Tính vận tốc của vật ngay trước khi chạm đất. Lấy g = 9,8 m/s2.  Đáp số: Bài 3. Một vật cĩ khối lượng 3 kg rơi khơng vận tốc ban đầu từ độ cao 4 m. a. Tính vận tốc của vật ngay trước khi chạm đất. Bỏ qua sức cản của khơng khí. b. Trong một thí nghiệm, người ta đo được vận tốc ngay trước khi chạm đất chỉ bằng 6 m/s. Tính lực cản trung bình của khơng khí tác dụng lên vật. Giải bằng phương pháp năng lượng và phương pháp động lực học.  Đáp số: Bài 4.Tính động năng của một đầu đạn khối lượng 5g bay với vận tốc 500 m/s. So sánh động năng này với động năng của một đầu búa máy khối lượng 10 kg chuyển động với vận tốc 6 m/s.  Đáp số: 625 J, 180 J. Bài 5.Một vật khối lượng 100 g được ném thẳng đứng từ độ cao 1 m lên cao với tốc độ ban đầu 10 m/s. Tính động năng và thế năng của vật sau khi ném được 0,5 s. Lấy g = 10 m/s2.  Đáp số:1,25 J, 4,75 J. Bài 6. Một ơ tơ khối lượng 2000 kg đang chuyển động với vận tốc 15 m/s thì hãm phanh. Sau khi hãm phanh, ơ tơ cịn chạy chậm dần đều thêm 20 m mới dừng lại. Tính độ lớn lực hãm ơ tơ.  Đáp số: -11250 N. Bài 7. Một con lắc gồm một quả cầu được treo vào một sợi dây khơng dãn cĩ chiều dài  . Sợi dây được treo vào một điểm O cố định. Kéo quả cầu từ vị trí cân bằng B tới A sao cho gĩc AOB bằng 300 rồi thả ra. a. Tính vận tốc quả cầu khi qua vị trí cân bằng. b. Chứng minh vận tốc này là cực đại.  Đáp số: a. v 2g 1 cos Website: www.thptthuanthanh1.bacninh.edu.vn
3. CHÚNG TƠI LÀM VIỆC NÀY VÌ CÁC BẠN, CÁC BẠN CẦN TỰ GIÁC VÌ CHÍNH CÁC BẠN! TIẾNG ANH 11 : GV – KHÚC THỊ HỒNG QUÝ Unit 6. LOBAL WARMING PART 1: VOCABULARY AND GRAMMAR REVIEW A. VOCABULARY absorb /əbˈzɔːb/ (v) thấm, hút atmosphere /ˈỉtməsfɪə(r)/ (n) khí quyển awareness /əˈweənəs/ (n) sự nhận thức, hiểu biết, quan tâm ban /bỉn/ (v) cấm capture /ˈkỉptʃə(r)/ (v) lưu lại, giam giữ lại carbon footprint /ˌkɑːbən ˈfʊtprɪnt/ (n) lượng khí CO, thải ra hằng ngày của một cá nhân hoặc nhà máy catastrophic /ˌkỉtəˈstrɒfɪk/ (adj) thảm họa clean-up /ˈkliːn ʌp/ (n) sự dọn dẹp, làm sạch, tổng vệ sinh climate change /ˈklaɪmət tʃeɪndʒ/ (n) biến đổi khí hậu diversity /daɪˈvɜːsəti/ (n) sự đa dạng drought /draʊt/ (n) hạn hán ecological /ˌiːkəˈlɒdʒɪkl/ (adj) thuộc về sinh thái ecosystem /ˈiːkəʊsɪstəm/ (n) hệ sinh thái emission /iˈmɪʃn/ (n) (danh từ khơng đếm được) sự phát (sáng), tỏa (nhiệt), xả (khí) famine /'fỉmɪn/ (n) nạn đĩi kém greenhouse gas /ˌɡriːnhaʊs 'gỉs/ (n) chất khí gây hiệu ứng nhà kính heat-related /hiːt - rɪˈleɪtɪd / (adj) cĩ liên quan tới nhiệt infectious /ɪnˈfekʃəs/ (adj) lây nhiễm, lan truyền oil spill /ˈɔɪl - spɪl/ (n.p) tràn dầu B. GRAMMAR REVIEW * PHÂN TỪ: 2 LOẠI Present participle (phân từ hiện tại): + Ving (dùng cho active): đơn + Having PII: hồn thành Past participle (phân từ quả khử): + PII (Passive) + Having been PII 1. Một chủ ngữ thực hiện hai hay nhiều hoạt động đồng thời S+ V1 , Ving (thực thể) Ex: - He walked along the street, singing massively. - My neighbor fell off the ladder, breaking three teeth. 2. Kết hợp 2 câu đơn S1 + V1 , S2 + V2 → Ving / Having PII , S1 + V2 → PII / having been PII , S1 + V2 Ex: Susan felt tired. She went to bed early. → Feeling tired, Susan went to bed early. Ex: He was punished by the teacher. He was sad. → Punished by the teacher, he was sad. Ex: They have lived here for a long time. They know about it clearly. → Having lived here for a long time, they know about it clearly. 3. Rút gọn mệnh đề quan hệ: Website: www.thptthuanthanh1.bacninh.edu.vn
4. CHÚNG TƠI LÀM VIỆC NÀY VÌ CÁC BẠN, CÁC BẠN CẦN TỰ GIÁC VÌ CHÍNH CÁC BẠN! S(N) + Ving + + be/V S(N) + PII (chia thì) + be/V S + be/ V + O(N) │ + Ving (chia thì) │ + PII Ex: The man who lives next to me is a doctor. → The man living next to me is a doctor. Ex: Many things considered impossible in the past have come in reality now. PART 2: EXERCISES A. PHONETICS I. Find the word which has a different sound in the part underlined. 1. A. dinner B. disappear C. discover D. dinosaur 2. A. robot B. robe C. rock D. role 3. A. constant B. modern C. obvious D. robot 4. A. continue B. finish C. likely D. instant 5. A. annual B. basic C. average D. capacity II. Choose the word which has a different stress pattern from the others. 1. A. importance B. happiness C. employment D. relation 2. A. possible B. cultural C. confident D. supportive 3. A. office B. nature C. result D. farmer 4. A. difficult B. popular C. effective D. national 5. A. answer B. reply C. singer D. future B. VOCABUALRY AND GRAMMAR 1. Choose the correct word in the bracket to complete the sentences. deforestation heat-related emissions extinction absorb catastrophic footprint diversity preserve infectious 1. Global warming has proved truly ___ for the environment. 2. Having measured the company's carbon ___, they realised that the amount of carbon dioxide (CO) it produced was great. 3. Rainforests have the highest species ___ on the earth. 4. We need to ___ the diversity of wildlife because each species has an important role to play. 5. Scientists have warned about the relationship between climate change and the spread of ___ diseases. 6. The alarming rate of ___ results in damage to the quality of the land. 7. The increase in the earth's temperature can cause ___ illnesses which can be dangerous to people. 8. A large amount of carbon dioxide ___ are released into the atmosphere by burning fossil fuels. 9. Many species are threatened with ___ due to deforestation and loss of habit. 10. More trees should be planted as they ___ carbon dioxide and give off oxygen. IL. Use the word given in capitals at the end of each line to form the word that fits in the gap in the same line. 1. Global warming may lead to ___ weather events, including heat waves, floods, and powerful storms, which could affect people's lives. (EXTREMELY) 2. Every one of us can help to protect and sustain our environment by ___ our consumption habits. (CHANGE) 3. Even slight increase in the levels of carbon dioxide in the atmosphere can cause a ___ rise in temperature. (SIGNIFICANCE) Website: www.thptthuanthanh1.bacninh.edu.vn
5. CHÚNG TƠI LÀM VIỆC NÀY VÌ CÁC BẠN, CÁC BẠN CẦN TỰ GIÁC VÌ CHÍNH CÁC BẠN! 4. There is a ___ between the recent droughts and climate change. (CONNECT) 5. Farming contributes more than 30 percent of the total greenhouse gas ___. (EMIT) 6. The overuse of chemical ___ is a serious threat to the environment. (FERTILIZE) 7. Global warming is the increase in the earth's average surface temperature due to the warming ___ of greenhouse gases. (EFFECTIVE) 8. The main cause of ___ warming is the burning of fossil fuels, such as natural gas, oil, and coal. (GLOBE) 9. The ___ of the earth's atmosphere causes sea-level rise. (WARM) 10. Many animal species are in danger of extinction due to the loss of their habitat and inability to ___ to climate change. (ADAPTION) III. Choose the best answer A, B, C or D to complete the sentences. 1. Developed countries are responsible for 80% of the ___ carbon dioxide that is already in the atmosphere. A. man-made B. men-made C. man-making D. man-mades 2. The government must take ___ to cut vehicle emissions. A. measures B. repeat C. discover D. ban 3. They didn't forget ___ a short vacation in Cuc Phuong National Park last year. A. being spent B. having been spent C. to spend D. having spent 4. The effects of climate change on humans and nature are ___. A. catastrophic B. temperature C. global D. risk 5. A layer of greenhouse gases – primarily water vapor, and carbon dioxide - acts as a ___ blanket for the Earth, absorbing heat and warming the surface. A. heat B. heating C. thermal D. hot 6. We admired the Japanese ___ the city of Fukushima after the disaster. A. to being rebuilt B. for having rebuilt C. to rebuild D. of having rebuilt 7. We need to preserve the ___ of wildlife because each species has an important role to play. A. diversity B. various C. population D. type 8. Most climate scientists agree the main cause of the current global warming trend is human expansion of the greenhouse ___. A. gas B. damage C. cause D. effect 9. ___ trees around the house on the south and west sides, they can save up to about $250 a year on cooling and heating. A. Having planted B. Being planted C. To plant D. To have planted 10. The increase in the earth's temperature can cause ___illness which can be dangerous to people. A. heat-related B. heat-relate C. heat-relating D. heated-relate 11. Certain ___ in the atmosphere, such as carbon dioxide, methane and nitrous oxide, block heat from escaping. A. gases B. layers C. effects D. emissions 12. Having developed green technologies with low-carbon emissions, ___ intends to get rid of coal. A. that country B. the communities C. the effort D. the possibility 13. Carbon dioxide is one of the primary ___ gases that cause global warming. A. greenhouse B. house C. plant D. home 14. Carbon dioxide is released through ___ processes such as respiration and volcano eruptions and through ___ activities such as deforestation, land use change, and burning fossil fuels. A. man-made B. ordinary-man-made C. human natural D. natural-human 15. Vietnam has been named among the 12 countries most ___ for climate change by the World Bank. A. at danger B. in risk C. at risk D. ready C. READING I. Fill each of the numbered blanks in the following passage. Use only one word in each space. landslides biodiversity conditions temperature rainfall economic farmland impacts agencies support Website: www.thptthuanthanh1.bacninh.edu.vn
6. CHÚNG TƠI LÀM VIỆC NÀY VÌ CÁC BẠN, CÁC BẠN CẦN TỰ GIÁC VÌ CHÍNH CÁC BẠN! Vietnam Likely to Face Extreme Weather Conditions by 2050 Vietnam is likely to continue facing extreme weather (1) ___ such as higher (2) ___, lower summer rainfalls, stronger storms, and rising sea levels from now to 2050. Temperature in northern Vietnam will rise by between 0.83 degrees Celsius by 2050 and continue its uptrend during the late 21st century. Summer (3) ___ will decline in most areas. Meanwhile, storms may become rarer but fiercer, causing possible flash floods and (4) ___ in flood-prone areas of northern mountains, central and central highland provinces. The forecasts suggest sea level rise of 100mm- 400mm along the entire Vietnamese coast by the end of the 21st century, affecting marine (5) ___ and coastal communities. The experts emphasize the unpredictability of climate change and its potential (6) ___ to create a variety of dangerous extreme weather events in the future. To raise the public awareness of climate change impacts, the Vietnamese government urges concerned (7) ___ to work together on devising worst-case scenario models and responses by 2020 and calls on international experts to further (8) ___ Vietnam in climate change adaptation. Climate change is a real threat to Viet Nam's socio-(9) ___ development. If sea levels rose one meter, five percent of the country's land, eleven percent of its population and percent of its (10) ___ would be affects. II. Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage. Consequences of Global Warming on Wildlife Increasing global temperatures are expected to (1) ___ ecosystems, pushing extinction to those species that cannot adapt. The first comprehensive assessment of the extinction risk (2) ___ global warming found that more than 1 million species could be extinctive by 2050 if the current rate continues. A recent study of (3) ___ 2,000 species of plants and animals discovered movement toward the poles at an average rate 3.8 miles per decade. The latest climate change report found that approximately 20 to 30 percent of plant and animal species assessed so far are likely to be at (4) ___ risk of extinction if global average temperature increases by more than 2.7 to 4.5 degree Fahrenheit. (5) ___ polar bears are drowning because they have to swim longer distances to reach ice floes. The U.S. Geological Survey has predicted that (6) ___ of the world's polar bear populations will be extinct by the mid- century due to melting of the Arctic ice cap. The ocean will continue to become more acidic due to carbon dioxide emissions. (7) ___ this acidification, species with hard calcium carbonate shells are vulnerable, as are coral reefs, (8) ___ are vital to ocean ecosystems. Scientists predict that a 3.6 degree Fahrenheit increase (9) ___ temperature would (10) ___ out 97 percent of the world's coral feels. 1. A. endanger B. benefit C. harm D. use 2. A. to B. from C. off D. on 3. A. nearly B. near C. relatively D. wealthy 4. A. declined B. born C. presented D. increased 5. A. Some B. Few C. More D. Little 6. A. two-third B. two-thirds C. two-three D. two-thirdth 7. A. As B. Due C. Because D. Because of 8. A. that B. when C. which D. who 9. A. away B. in C. at D. of 10. A. send B. broke C. wipe D. lay III. Read the passage and choose the best answer. The world's oceans have warmed 50 percent faster over the last 40 years than previously thought due to climate change, Australian and US climate researchers reported Wednesday. Higher ocean temperatures expand the volume of water, contributing to a rise in sea levels that is submerging small island nations and threatening to wreak havoc in low-lying, densely populated delta regions around the globe. Website: www.thptthuanthanh1.bacninh.edu.vn
7. CHÚNG TƠI LÀM VIỆC NÀY VÌ CÁC BẠN, CÁC BẠN CẦN TỰ GIÁC VÌ CHÍNH CÁC BẠN! The study, published in the British journal Nature, adds to a growing scientific chorus of warnings about the pace and consequences rising oceans. It also serves as a corrective to a massive report issued last year by the Nobel- winning UN Intergovernmental Panel on Climate Change (IPCC), according to the authors. Rising sea levels are driven by two things: the thermal expansion of sea water, and additional water from melting sources of ice. Both processes are caused by global warming. The ice sheet that sits atop Greenland, for example, contains enough water to raise world ocean levels by seven metres (23 feet), which would bury sea-level cities from Dhaka to Shanghai. Trying to figure out how much each of these factors contributes to rising sea levels is critically important to understanding climate change, and forecasting future temperature rises, scientists say. But up to now, there has been a perplexing gap between the projections of computer-based climate models, and the observations of scientists gathering data from the oceans. The new study, led by Catia Domingues of the Centre for Australian Weather and Climate Research, is the first to reconcile the models with observed data. Using new techniques to assess ocean temperatures to a depth of 700 metres (2,300 feet) from 1961 to 2003, it shows that thermal warming contributed to a 0.53 millimetre-per-year rise in sea levels rather than the 0.32 mm rise reported by the IPCC. 1. Ultimately, the new study should help scientists to ___. A. lower water levels. B. better predict climate change. C. bury sea-level cities like Dhaka and Shanghai. 2. The rise in water levels is especially dangerous for small island nations and ___. A. low-lying urban areas. B. all coastal cities. C. people who live on the beach. 3. What happens when the ocean's temperature rises? A. It causes sea levels to rise. B. It causes sea levels to remain constant. C. It causes sea levels to decrease. 4. What was the main finding of the study? A. not enough is being done about global warming. B. ocean waters have warmed faster than scientists had previously thought. C. the warming of the world's oceans is not a threat. 5. The new study ___. A. shows that thermal warming contributed to a 0.32 millimeter-per-year rise in sea levels. B. did not reveal anything that scientists didn't already know. C. used new techniques to assess ocean temperatures. D. WRITING I. Rewrite the sentences, using perfect gerunds. 1. Nam won a scholarship. We are excited about that fact. → We are ___ 2. Entering the room, I was surprised at what I saw. → When ___ 3. The volunteers couldn't mow the old lady's lawns because of the rain. → The rain prevented ___ 4. Since we have become too dependent on the use of electricity, we have to find alternative sources of energy before fossil fuels run out. → Having ___ ___ 5. Tonya had dumped a lot of rubbish on the beach. She was strongly criticised for that. → Tonya was ___ Website: www.thptthuanthanh1.bacninh.edu.vn
8. CHÚNG TƠI LÀM VIỆC NÀY VÌ CÁC BẠN, CÁC BẠN CẦN TỰ GIÁC VÌ CHÍNH CÁC BẠN! 6. In the Tree Planting Competition, the students in Group 11G planted the most trees in the schoolyard. They were praised for that. → The students in ___ ___ 7. After she replaced all the light bulbs in her house with LED lights, she same a lot of money on her electricity bills. → Having ___ 8. Sam had not worked hard enough in his previous job. He regretted it. → Sam regretted ___ 9. Someone had cut down the oldest tree in the park. The police suspected Mike of doing it. → The police suspected ___ 10. Since the farmers used too much chemical fertiliser on their farm, they now have to drink polluted water. → Having ___ 11. Denis had taken an active part in the Green Summer activities. He was rewarded for that. → Denis was ___ 12. After the students had learnt about the benefits of recycling and reusing, they started collecting waste paper, bottles, and cans to recycle and reuse. → Having ___ ___ II. Rewrite the sentences, using perfect gerunds. 1. David did his homework and they went to bed. → After having ___ 2. It is easy for anyone to learn how to cook. → Learning ___ 3. Tony had rescued the kids from the fire. People admired him for that. → People ___ 4. He had dumped lots of rubbish onto the beach. He denied it. → He denied ___ 5. After Ha had read some documents about Green Earth, she decided to join the organization. → Having ___ 6. I have seen him before. I remember that. → I ___ 7. You had saved the lives of hundreds of wild animals. Thank you for that. → Thank you ___ 8. They had hunted and killed many wild animals. Later they regretted what they had done. → They regretted ___ 9. Since Mai had refused Nam's offer of a lift in his car, she had to walk home. → Having ___ 10. 'You've lied to us, the villagers said. The politician denied it. → The politician ___ 11. The factory had dumped tons of toxic waste into the river. It was heavily fined for that. → The factory ___ 12. Thanh had forgotten to turn off the gas cooker before he left his house. He admitted that. → Thanh admitted ___ III. Rewrite the following sentences using Perfect Participle. Ex: We switched off the lights before we went to bed. → Having switched off the lights, we went to bed. 1. Zoe had practiced a lot, so she was sure of her winning in the competition. ___ Website: www.thptthuanthanh1.bacninh.edu.vn
9. CHÚNG TƠI LÀM VIỆC NÀY VÌ CÁC BẠN, CÁC BẠN CẦN TỰ GIÁC VÌ CHÍNH CÁC BẠN! 2. The boy asked his mother's permission and then went out to play. ___ 3. As he had drunk too much, he didn't drive home himself. ___ 4. We have done two tests today, so we are exhausted. ___ 5. She filled the washing machine and switched it on. ___ 6. She had been to disco the night before and she overslept in the morning. ___ 7. We had worked in the garden all day and were sunburned in the evening. ___ 8. She had not slept for two days and therefore she wasn't able to concentrate. ___ 9. Since I had not seen him for ages, I didn’t recognize him. ___ 10. I had not ridden a horse for a long time and I found it very difficult to sit on the saddle. ___ IV. Rewrite the following sentences using After or Before. 1. I told him off. Then I realized I was wrong. → After having told him off, I realized I was wrong. 2. I worked very hard for the exam. Then I passed it. → Before ___ 3. First I considered what to study. Then I decided to major in Maths. → After ___ 4. She wrote a letter. Then she went to bed. → After ___ 5. He bought a radio. First he checked the price. → After ___ 6. They argued. Then they fought. → After ___ 7. She went out for a walk. Then she had a fatal accident. → Before ___ 8. She decided to go away. First she faced the matter. → After ___ 9. We read the book, then we wrote the assignment. → Before ___ 10. She watched the film, then she wrote a report. → After ___ PART 3: TEST YOURSELF I. Find the word which has a different sound in the part underlined. 1. A. sale B. serve C. sure D. sort 2. A. age B. altogether C. change D. college 3. A. mercury B. mermaid C. merriment D. servant 4. A. solar B. cost C. knowledge D. impossible 5. A. appear B. measure C. nuclear D. year II. Choose the word which has a different stress pattern from the others. Website: www.thptthuanthanh1.bacninh.edu.vn
10. CHÚNG TƠI LÀM VIỆC NÀY VÌ CÁC BẠN, CÁC BẠN CẦN TỰ GIÁC VÌ CHÍNH CÁC BẠN! 1. A. commitee B. scientific C. pagoda D. computer 2. A. lotion B. escape C. prefer D. review 3. A. commerce B. consent C. access D. advent 4. A. mysterious B. historical C. heritage D. particular 5. A. discriminate B. accurate C. transparent D. benevolent III. Choose the best answer A, B, C or D to complete the sentences. 1. Planting trees can contribute to reducing global warming as trees ___ and absorb CO in the air. A. capture B. pasture C. calculate D. appear 2. A strong greenhouse effect will warm the ocean and partially melt glaciers, increasing ___. A. sea level B. temperature C. sea water D. pollution 3. The next dry season will be extremely severe ___ further saltwater intrusion, water and rain shortages, and heat waves. A. due to B. thanks to C. because D. although 4. Climate change may lead to the extinction of many species and upset the ___ balance. A. ecological B. biology C. geography D. technology 5. Ocean water also will expand if it warm, ___ further to sea level rise. A. leading B. contributing C. getting D. making 6. Methane is a far more active ___ than carbon dioxide, but also one which is much less abundant in the atmosphere. A. climate change B. emission C. greenhouse gas D. greenhouse effect 7. The government must take measures to cut ___ emissions. A. vehicle B. transportation C. transfer D. convert 8. The cleaning of land for agricultural, industry, and other human activities have increased ___ of greenhouse gases. A. lots B. collections C. concentration D. attention 9. The low ___ in the Mekong Delta leads to acute saline instruction much deeper than the traditional 30 to 40 km of mainland that is contaminated with saltwater. A. water level B. salt water C. water currents D. sea level 10. Buying organic food is better for the environment because it uses less ___. A. fertilizer B. fertilize C. fertilizes D. fertilized 11. Humans ___ atmospheric carbon dioxide concentration by a third since the Industrial Revolution began. A. had increased B. were increasing C. Increase D. have increased 12. All of the disasters resulted from ___ will continue to have a devastating effect on socio-economic development. A. ecological balance B. carbon footprint C. floods D. climate change 13. The simplest way to reduce your ___ footprint is to cycle to school. A. carbon B. chemical C. chemistry D. dioxide 14. ___ the desalination plant, the company could offer an effective solution to the problem of water scarcity. A. Being built B. Having been built C. To build D. Having built 15. Sea level rise is usually regarded as Vietnam's main ___: a one-meter rise would submerge 40 percent of the country and make millions homeless. A. concern B. disaster C. hope D. destruction 16. Replace all the light bulbs in your home with ___ bulbs. A. energy-saving B. energy-save C. energy-saves D. energy-saved 17. The public praised the local farmers for ___ millions of trees of the surrounding hills. A. being planting B. having planted C. plant D. being planted 18. Leaving your DVD player on standby produces the same carbon ___ each year as the average person of Burundi. A. emissions B. releases C. eruptions D. appearance Website: www.thptthuanthanh1.bacninh.edu.vn
11. CHÚNG TƠI LÀM VIỆC NÀY VÌ CÁC BẠN, CÁC BẠN CẦN TỰ GIÁC VÌ CHÍNH CÁC BẠN! IV. Choose the correct word in the box to complete the sentences. capture greenhouse illnesses ecological emissions dioxide balance catastrophic climate energy 1. Carbon dioxide is one of the primary ___ gases that cause global warming. 2. Deforestation is one of the biggest environmental threats to the ___ balance in the world. 3. There are many ways for us to reduce our carbon ___ order to save our environment. 4. The effects of climate change on humans and nature are ___. 5. I believe that the only way for us to reduce global warming is to cut down on ___ use. 6. Planting trees can contribute to reducing global warming as trees ___ and absorb CO2 in the air. 7. As global temperature rise, there are more cases of heat-related ___. 8. Motor vehicles running on petrol are responsible for a large amount of carbon dioxide ___. 9. Climate change may lead to the extinction of many species and upset the ecological ___. 10. Although global warming is causing changes in weather patterns, it is only one aspect of ___ change. V. Choose the word in the box to complete the text. radiation networks overall flooding vulnerable systems throughout sensitive increased urbanization Global warming and cooling have occurred naturally (1) ___ history. But in the last 200 years, humans' uses of fossil fuels and clear cutting of forests have (2) ___ the amount of carbon dioxide and other gases in the atmosphere. These gases trap some of the (3) ___ from the sun which then increases the Earth's temperature. Given the current state of environmental pollution caused by human activities, scientists believe the average temperature of the earth may increase 1-2 degrees Celsius which put simply, means some places will get much hotter and some much colder. At the same time, this (4) ___ warming effect means more frequent and more intense weather systems, especially in terms of flooding and drought. Vietnam is one of the most (5) ___ environments due to its location on the planet. It is already subject to some of the earth's most powerful weather systems and the increased frequency and intensity of storms will affect it often and directly, especially in coastal areas where most people live. Various estimates have been made as to the possible impacts. The most directly affected sector will be agriculture, which is very (6) ___ to flooding and the effects of extreme weather. Vietnam has the advantage of coming relatively late into the industrialization, (7) ___, and modernization process. This means it can avoid many of the mistakes made by wealthier industrial countries. For example, wireless communication (8) ___ can be built from the start rather than installing lines that can be destroyed in extreme weather. Cities can be designed and located in less vulnerable locations. Climate-friendly building codes and standards can be created that are both more efficient and less prone to heat stress, wind damage, and (9) ___. Climate friendly transport (10) ___, especially public transport, can be adopted. VI. Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage. Global warming is primarily a problem of too much carbon dioxide in the atmosphere, (1) ___ acts as a blanket, trapping heat and the planet. (2) ___, the average surface temperature has increases more than one degree Fahrenheit since the late 1800s. Most of that increase has occurred over the past three decades. We are overloading our atmosphere with carbon dioxide, which traps heat and steadily drives up the planet's temperature. Carbon dioxide comes from the fossil fuels we burn for energy, such as coal, natural gas, and oil, and the loss of forests due to (3) ___, especially in the tropics. Within the scientific community, there is no debate. (4) ___ scientists agree that global (5) ___ is happening and that human activity is the primary cause. Website: www.thptthuanthanh1.bacninh.edu.vn