Предмет: Физика, автор: Zaur95

Можете привести примеры золотого правила механики в быту?

Ответы

Автор ответа: amira26

например:Вы хотите поднять бочку на машину,но у вас не хватает сил.Например возьмём расстоянии от земли до машины 1 метр.Вы должны поставить двух метровую перекладину (большую плоскость) и поставить так чтобы она села нормально,затем катите бочку и у вас происходит выигрыш в силе ,но Потеря расстояния )

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1. What is this? … is my exercise-book.

a. it

b. these

c. those

d. they

e. them

2. There is … pen on the table.

a. some

b. such

c. an

d. a

e. three

3. … car is this?

a. what

b. who’s

c. why

d. whom

e. whose

4. I’m cold. …open the window.

a. a not

b. don’t

c. no

d. none

e. –

5. He … to the University by tram.

a. is going

b. can

c. goes

d. go

e. are going

6. Nick … a book now.

a. is reading

b. are reading

c. read will read

d. had read

7. I like potatoes, but I … them everyday.

a. haven’t eat

b. not eat

c. doesn’t eat

d. don’t eat

e. isn’t eating

8. I … to see my friend tomorrow.

a. are going

b. have going

c. is going

d. were going

e. am going

9. She didn’t … breakfast yesterday.

a. had

b. has

c. have

d. having

e. haved

10. I can swim, but my friend …

a. is not

b. can’t

c. don’t

d. needn’t

e. aren’t

11. … I take your pen?

a. may

b. will be able

c. does

d. has

e. had

12. Must I wear these shoes? – No, you…

a. mustn’t

b. can’t

c. weren’t

d. isn’t

e. aren’t

13. My grandfather … to leave school when he was 15.

a. must

b. can

c. is

d. are

e. had to

14. I … speak French last year.

a. can’t

b. may not

c. must not

d. couldn’t

e. hasn’t

15. You will … speak English in 3 years.

a. can

b. has

c. had

d. be able to

e. were able to

16. When I called him, he … supper.

a. has having

b. was have

c. was having

d. is having

e. were having

17. They … up late yesterday.

a. get

b. got

c. has got

d. gets

e. getting

18. It is the … book I have ever read.

a. best

b. better

c. well

d. good

e. worse

19. Where … go? Let’s go to the cinema.

a. won’t we

b. is we

c. have we

d. shall we

e. are we

20. What has she … ?

a. doing

b. do

c. did

d. done

e. does

21. There … many students in the room now.

a. were

b. was

c. is

d. are

e. will

22. There … a university in the centre of the city.

a. is

b. are

c. be

d. shall

e. were

23. I can’t see … on my table.

a. nothing

b. nobody

c. anything

d. anywhere

e. somewhere

24. What … you going to do tonight?

a. was

b. will

c. were

d. is

e. are

25. There … any sugar in the tea.

a. weren’t

b. wasn’t

c. haven’t

d. hadn’t

e. won’t

26. We … in Moscow last year.

a. lives

b. is living

c. has living

d. live

e. lived

27. Where … she work?

a. do

b. done

c. doing

d. does

e. is

28. ... speaks English well?

a. which

b. why

c. who

d. when

e. what

29. How many theatres … there in your city now?

a. were

b. are

c. have

d. is

e. was

30. What … you do tomorrow?

a. will

b. shall

c. will be

d. shall be

e. are

31. He said that he … at the plant last year.

a. are having

b. living

c. lives

d. had lived

e. lived

32. Let … tell his friends about his city.

a. his

b. him

c. he

d. her

e. she

33. My friend … breakfast when I called him.

a. were having

b. will having

c. are having

d. was having

e. is having

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