Cho tam giác ABC vuông tại C trong đó AC= 9cm, DC=12 cm. Tính các tỉ lệ lượng giác của góc B. Từ đó suy ra tỉ lệ lượng giác góc A.

I, Change the follwing sentences from active to pasive.

30, The children looked at the woman with a red hat.

-.....................................

31, She used to pull my hat over my eyes.

-......................................

32. For the past years, I havedone all my washing by hand.

-......................................

33, A pair of robins have biult in the porch since last week.

-....................................

34, The police haven't found the murderer yet.

-..........................

35, The sold one of her own painings at $1,000.

-.........................

36, I will put your gloves back in your drawer.

-..........................

37, People speak English in almost avery corner of the world.

-.......................................

38, You mustn't use this machine after 5.30 p.m.

-............................................

40, After class, one of the students always erases the chalk board.

-.................................

41, You must clean the wall before you pain it.

-.................................

42, THEY TOLd the new pupil where to sit.

-.....................

43. I knew that they had toldhim of the meeting.

-................................

44, NObody has aver treated me with such kindness.

-.........................................

45, No one belives his story.

-..................................

46. A sudden increase in water pressure may break the dam.

-.....................................

47, We must take good care of books borrowed from the library.

-...........................

48. A man I know told me about it .

-.............................

49. We can never find him at home for he is always on the move.

-.................

50, They use milk for making butter and cheese.

-.............................................

Cho hình vuong ABCD. Lấy điểm E trên BC, tia AE cắt đường thẳng CD tại G. Trên nửa mp bờ là đường thẳng AE chứa tia AD, kẻ AF vuông góc với AE và AF=AE.

a) Chứng minh 3 điểm F,D,C thẳng hàng

b) \(\dfrac{1}{AB^2}=\dfrac{1}{AE^2}+\dfrac{1}{AG^2}\)

Số lớn nhất trong các số 582 340; 582 430; 528 340 là số nào?

A.582 340

B.582 430

C.528 340

4kg 54g = ……………g. Số thích hợp viết vào chỗ chấm là số nào ?

A.4054 

B.4504

C.4540

Cho hình vuông ABCD cạnh 12cm. Các điểm M, N lần lượt trên các cạnh AB, AD sao cho AM = DN = x.

a) Tính diện tích tam giác AMN theo x.

b) Tìm x để diện tích tam giác AMN bằng 1 9  diện tích hình vuông ABCD

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

In England, primary education is provided by state schools run by the government and by independent fee-paying schools.

A. public

B. obligatory

C. vocational

D. category

Tom looks so frightened and upset. He_____something terrible.

A. may have experienced

B. could have experienced

C. should have experienced

D. must have experienced

The use of computer aids in teaching,_____the role of teachers is still very important.

A. yet

B. unless

C. despite

D. where

A home for children whose parents are dead is called a(n)_____

A. kindergarten

B. orphanage

C. street people house

D. lodging