Bài tập tổng hợp Tiếng Anh Lớp 8 - Unit 7: Pollution

Nội dung text: Bài tập tổng hợp Tiếng Anh Lớp 8 - Unit 7: Pollution

1. 4. You must read the (instruct) carefully before you use the new oven. 5. We were taken aback at the (drama) changes in our village; each home owns a computer now. 6. It is always (interest) to watch the cubs at play. 7. My mother advised me to be careful in my (choose) of friends. 8. The (hot) makes everybody very drowsy during the lesson in class. 9. The couple came here at the special (invite) of the prime minister. 10. Please (low) the volume of your voice. I can even hear you from next door. 4. Choose the correct answers. 1. Many species of wildlife are becoming extinct, the rainforests are being destroyed. A. thereforeB. sinceC. consequentlyD. so 2. Hemp can be used to make paper, it could reduce the need for logging. A. consequentlyB. due toC. soD. since 3. logging provides jobs and profits, the government is reluctant to control it. A. soB. ConsequentlyC. SinceD. Due to 4. Hemp was grown throughout history its versatility; it can be used to make many different things. A. due toB. becauseC. sinceD. as a result 5. Hemp is related to the marijuana plant; it is illegal in many countries. A. soB. due toC. as a resultD. because 6. The polluted chemical waste was dumped into the ocean; , the mass of fish died. A. becauseB. asC. because ofD. consequently 7. It was guessed that the fish died a powerful toxin in the sea water. A. because ofB. becauseC. sinceD. as a result 8. Many species in BC are threatened logging. A. soB. becauseC. sinceD. due to 9. Smoking can heart disease. A. lead toB. createC. causesD. due to 10. Radioactive pollution is increasing the increased use of radioactivity. A. asB. sinceC. because ofD. because 5. Combine the sentences in each pair into a new sentence that shows a cause/ effect relationship. Use cause and effect signal word or phrase given in brackets. 1. One effect of global warming is that sea levels are rising. The polar icecaps are melting. (because) ___ 2. The global population has increased. There are much better levels of nutrition. (because of) ___ 3. Nuclear explosions and detonations of nuclear weapons cause radioactive pollution. (lead to) ___ 4. In the last ten years, many BC valleys have been clearcut. 142 species of salmon have become extinct. (so) ___ 5. The fish and other aquatic animals have died. The water is polluted. (due to) ___ 2
2. 2. A factory directly discharges a large volume of waste water into the Thi Vai River. The river is polluted. ___ 3. Farmers use polluted water to water their plants. People eat these plants, they become sick with diseases such as diarrhea, bacterial inflections even cancer. ___ 4. Thermal pollution takes place. The water temperature in streams, rivers, lakes and oceans will increase or decrease suddenly. ___ ___ 5. People live in radioactive pollution area. They can be skin cancer. ___ D. READING Read the text then choose the best answer. ENVIRONMENTAL POLLUTION In recent years the problem of environmental pollution has become a serious problem in big cities in our country. So, what are reasons and possible measures for this problem? Nowadays, we are living in a city with high population density, so domestic waste is the first reason. Then many people's social consciousness is not high. In several areas, they throw rubbish on streets, canals and rivers. It is easy for us to see rubbish of all kinds floating on the water. Moreover, uncultured people even pee in the public place. Now, let's come to other reasons. Our city is overloaded with vehicles that expel a lot of smoke and dust. This contributes to the heat of the air, and causes pollution. Besides that, in several places, trees have been cut down to have room for buildings, hotels, or supermarkets. This makes the atmosphere in our city mug and stuffy. New words:In addition, many plants and factories send out waste into canals or poisonous gas into the air. muggyLast but(adi) not nồm least, ẩm, the oi bứcdrainage system in our city is very old and downgrade, so it is always flooded whenever it rains. stuffy (adi) ngột ngạt 1. What is not the reasons of environmental pollution? A. high population density B. smoke and dust from vehicles C. domestic waste D. the new drainage system 2. What is the first reason of environmental pollution? A. domestic waste B. smoke and dust from vehicles C. population density D. rubbish on streets 3. What is the synonym of the word "consciousness"? A. awareness B. unculture C. unconsciousness D. awakeness 4. Why vehicles cause air pollution? A. Vehicles make the atmosphere in our city muggy and stuffy. B. Because they expel a lot of smoke and dust. C. Because they consume too much gasoline. D. Because many people use motorbikes and cars nowadays. 5. How is the drain system in our city? A. It’s very modern. B. It's downgrade. C. It is new. D. It is very old and downgrade 4