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The COVID-19 epidemic is a dangerous disease and they are raging in  all over the world.First, with a very high rate of spread, people will be very susceptible to infection. causing a lot of problems, it is economically difficult and causes millions of deaths, so doctors have to work day and night to be able to help patients in dangerous epidemic situations such as Therefore, everyone should wash their hands clean.Always wear a mask when going out and avoid contact with epidemic areas. I hope the epidemic will soon end so that society can live a normal life

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31 There are 4 kinds of pollution

32 It is called air pollution

33 It is unwanted light, such as the light of cities, street lights, and others make it hard to see the stars

34 It is called noise pollution

35 It is water called water pollution

1 A

2 B

3 B

4 A

5 C

6 C

7 A

8 D

9 C

10 C

1. They have turned(down/ up) Jim's application for the job.
2. You may have to deal( with/ about) any problem in the workplace.
3. Small birds mainly live (on/off) insects.
4. When does the plane take( off/ up)?
5. Why did you decide to take( on/ up) skiing?
6 Remember to warm(up/down) carefully before you play sports.
7. There’s no need to dress( up/ down). It is just an informal party.
8. Oops, I think we're run out(of/ on) petrol.
9. Jim seems not to get( on/ off) well with his classmates.
10. My husband has decided to set ( up/ down) a business on his own.

1D

2 D

3 C

4 B

5 B

6 C

7 A

8 C