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Water pollution is a source of water contaminated with chemicals or foreign toxins that are detrimental to the health of users, plants or animals. Water pollution occurs when harmful substances enter water bodies such as lakes, rivers, oceans, etc., which can be dissolved, suspended or deposited in the water. The water pollutants include: fertilizers and pesticides from agricultural production; wastewater and waste from food processing; lead, mercury and other heavy metals; Chemical waste from industries. It leads to many consequences. Almost all types of water pollution are harmful to the health of humans, animals and plants. Heavy metals from industrial processes can accumulate in nearby lakes and rivers. They are toxic to marine organisms such as fish and shellfish, and subsequently to those who eat them. Sulfate particles from acid rain can harm the health of organisms in rivers and lakes. And many consequences more. How to solve this problem? We can treat waste water properly, lractice green agriculture, have law and policy against water pollution, treat Industrial wastewater,......This is my talking aboute water pollution. Thanks for listening
What were you doing at this time yesterday ?
~Hok Tốt~
1. This is the first time I have eaten Texan beefsteak. (eat)
2. Our family ______has lived___________ in Hanoi since 2000. (live)
3. Mrs. Vui _______hasn't finished___________ the housework yet, so she can’t go shopping. (not finish)
4. I ____________have not met_________ a crueler person than she is before. (not meet)
5. My close friend ________has been encouraged_____________ to take part in this competition. (encourage)
6. ______________Have you done ______________ your homework yet ? No, we haven’t (do)
7. Pete ______has been swimming____________ in the water for over 4 hours. (swim)
8. For centuries, poets, writers and musicians _______have mentioned___________ the ao dai in poems, novels and songs. (mention)
9. ____________ Have they been married _______________ married ? I think they haven’t. (be)
10. Trang ________has just won___________ the first prize of the English-speaking contest. (just / win)
III. Use the correct Present Perfect tense :
1. This is the first time I have eaten Texan beefsteak. (eat)
2. Our family ______has lived___________ in Hanoi since 2000. (live)
3. Mrs. Vui ______hasn't finished____________ the housework yet, so she can’t go shopping. (not finish)
4. I __________haven't met___________ a crueler person than she is before. (not meet)
5. My close friend _________has encouraged____________ to take part in this competition. (encourage)
6. _____Have_________ you ________done______ your homework yet ? No, we haven’t (do)
7. Pete _______has been swimming___________ in the water for over 4 hours. (swim)
8. For centuries, poets, writers and musicians __________have mentioned________ the ao dai in poems, novels and songs. (mention)
9. _______Have_____ they ___been____________ married ? I think they haven’t. (be)
10. Trang ________Have just won___________ the first prize of the English-speaking contest. (just / win)
Refer:
Bài tập đặt câu hỏi cho từ gạch chân (Có đáp án)
Nắm Ngay Bài Tập Sắp Xếp Trật Tự Từ Trong Câu Tiếng Anh - Đáp án Chi Tiết - IELTS Cấp Tốc
26B
27D
28 A
29 C
30 B
31 D
32 A
33 C
34 D
35 C