Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is basic human right. But acid rain, industrial pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools of poison. Lake Baikal in Russia is one of the largest lakes in the world. It contains a rich variety of animals and plants, including 1,300 rare species that do not exist anywhere else in the world. But they are being destroyed by the massive volumes of industrial effluent which pours into the lake everyday. Even where law existed, the government did not have the power to enforce them. Most industries simply ignore the regulations. The Mediterranean Sea occupies 1% of the world’s water surface. But it is the dumping ground for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles off shore.
Water is free to everyone. A few years ago people thought that the supply of clean water in the world was limitless. Today, many water supplies have been ruined by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious source. We should do something now.
1. According to the writer, one environmental problem in the world today is ________ .
A. acid rain B. industrial pollution.
C. safe water shortage. D. population explosion .
2. Many sources of water are not drinkable because of _______ .
A. acid rain. B. industrial pollution.
C. garbage D. all A, B, C, are correct
3. What is serious problem of Lake Baikal in Russia?
A. It contains a rich variety of animals and plants.
B. It is polluted by massive volumes of industrial wastes discharged into it .
C. It has 1,300 rare species that do not exist anywhere else in the world .
D. The government did not have the power to enforce laws and regulations.
4. How many countries throw industrial waste into the Mediterranean Sea regularly?
A. nearly 16 B. exactly 16.
C. exactly 15 D. less than 15.
5. What is the message to the reader?
A. We should take action to protect our water resources.
B. We should take all water resources into account.
C. We should limit the use of water resources.
D. We should encourage people to use safe water.
Chúc bạn học tốt 
Tìm lỗi sai rồi sửa lại cho đúng:
1. If the drinking water isn't untreated, an outbreak of some diseases may happen => may be happened.
2. Some new factories have just been built in the outskirts of => in my city.
3. If the world temperatures go on => go rise, there will be less snow.
Tìm lỗi sai rồi sửa lại cho đúng:
1. If the drinking water isn't=>is untreated, an outbreak of some diseases may happen.
2. Some new factories have just been built in=>on the outskirts of my city.
3. If the world temperatures go on rise=>rising, there will be less snow.
1.The (work)....had worked......in a restaurant before they (go)....went.....to college
2. John (work)....had worked.....in a factory before he ( become).....became...the direcror
3. My father (smoke).....had smoked.....but he (give it up)....gave it up.....last year.
4. He (like).....had liked....in Vietnam before he (go)....went.....abroad
5. I (earn)...earned....a lot of money , but then I (lose).....lost.....my job
6.Mrs.Green (drive) ....had driven....a lot beforeshe (have)....had..... an accident
7. She (play)....had played...... a lot of tennis before she (break).....broke.....her leg
8. There (be) ....is...... a cinema at the corner, but they (build).....are going to build.....a park there
9. He (live)....had lived...... in London, then he(move)....moved...... to oxford last year
10. We (play)....played..... football every afternoon when we (be).....were...... still students
1. frightening -> frightened
câu thứ 2, 3 không có lỗi sai
4. play -> study
câu cuối không có lỗi sai
Tìm lỗi sai và sửa lại cho đúng
My sister is frightening of my friend because he usually dares her
frightening -> frightened
You can take the documents home and play at your leisure.
play -> study
còn lại đúng mà
B => to read (encourage + O + to + V: động viên ai đó làm gì)
but -> so
but => so nhé