Quần xã sinh vật khác với hệ sinh thái ở chỗ
A.một quần xã bao gồm thực vật và động vật, nhưng không có sinh vật phân giải, trong khi hệ sinh thái thì có.
B.một quần xã không bao gồm nhân tố vô sinh, nhưng một hệ sinh thái thì có.
C.một quần xã không được sắp xếp trong tháp năng lượng, còn một hệ sinh thái thì có.
D.một quần xã thì lớn hơn một hệ sinh thái.

 Quan hệ hỗ trợ và quan hệ cạnh tranh giữa các cá thể trong quần thể có điểm chung là

A.đều làm tăng khả năng kiếm ăn của các cá thể.

B.đều làm tăng khả năng sống sót và sinh sản của các cá thể.

C.chỉ xuất hiện khi mật độ quần thể tăng cao.

D.đều có lợi cho sự tồn tại của quần thể.

Choose the best answer A, B, C or D to complete the sentence.

21. I don’t mind ……………………up early in the morning.

A. get B. to get C. getting D. to getting

22. Whenever those two ladies meet, they stop …………………….

A. talk B. to talk C. talking D. to talking

23. ……………………applying for hundreds of jobs, he is still out of work.

A. Due to B. Despite C. Though D. Provided that

24. John hoped to finish ……………………two of his essays before the deadline.

A. write B. to write C. writing D. to writing

25. So many students have difficulty ……………………a good job after graduation.

A. find B. to find C. finding D. on finding

26. Graduates are well equipped ……………………careers in environmental policy.

A. with B. about C. for D. to

27. The medical profession requires doctors to be ……………………towards their patients.

A. empathetic B. dynamic C. professional D. patient

28. My dream is to become a doctor because I want to save people’s lives. – …………………….

A. That’s terrible! B. It’s not what I want to hear.

C. That’s a very good point. D. Maybe you find it boring.

29. Most students see their time at university ……………………the first step in their career path.

A. over B. off C. on D. as

30. Brian ……………………by buying, fixing, and reselling phones while he was still in college.

A. took into account B. made a bundle C. made a difference D. burned the midnight oil

31. Every business has a(n) ……………………who prepares financial statements on a regular basis.

A. secretary B. sale manager C. event planner D. accountant

32. She really loves teaching. She can’t ……………………working in any other field but education.

A. stand B. imagine C. wait D. help

33. She is a(n) ……………………social worker who soon realized that the single mother was at her breaking point.

A. sympathy B. empathy C. empathetic D. synthetic

34. The possible career paths in education can be to become teachers, education ……………………or curriculum developers.

A. leaders   B. administrators  C. managers   D. businessman

35. ……………………prepare students for the world of work, schools should focus on soft skills such as critical thinking, innovation and adaptability.

A. Although B. In spite of C. In order to D. Before

ko có j lm bài tốt nha ^^

II. Choose the best answer
1. Tuan .........................as the most effective activist in the town charity program.
A. nominated B. has nominated C. has been nominated D. nominates
2. If it.................., we will go to the movies.
A. rained B. won’t rain C. didn’t rain D.doesn’t rain

3. Yesterday I met my friend…………….gave me a big present on my birthday.

A. whom B. who C. whose D. which
4. My father is a .........................man. He is ready to give his money to the poor.
A. well-known B. considerate C. satisfied D. generous
5. I’m ………………..that you are working hard.
A. please B. pleased C. pleasing D. pleasant
6. We can .............................pollution by recycling bottles and cans.
A. litter B. prohibit C. mention D. minimize
7. ........................ the water is highly polluted, we can’t swim in the river.
A. Therefore B. As C. However D. Though
8. Please …………………the TV. It sounds very boring and there’s nothing interesting on
A. turn on B. turn off C. turn down D. turn up
9. A …………..faucet can waste a lot of water a month.
A. running B. dripping C. cutting D. dropping
10. In order to save electricity, an ordinary 100-watt light bulb can be replaced by a(an)…..... bulb.
A. energy-save B. energy-saving C. saving-energy D. save-energy
11. Nga is very tired. …………., she has to finish her homework before she goes to bed.
A Though B Because C Therefore D However

12. If we go on littering, the environment will be seriously ……………………..

A. pollute B. polluted C. pollution D. polluting
13………………..raising some money for poor children?
A. I suggest B.Let’s C. How about D. Why don’t you