Vẽ bốn đương thẳng xx', yy', zz', tt' cùng đì qua điểm O. Hãy viết tên các cặp góc đối đỉnh (khác góc bẹt).

Tính bằng cách hợp lí:

a, 125+70+375+230

b,  7 2 . 33 + 7 2 . 67

c, 35.11+65.18+35.13+65.6

d, 490 – {[(128+22):3. 2 2 ] – 7}

Cho hình a, b, c, d và e. Cặp góc nào đối đỉnh? Cặp góc nào không đối đỉnh? Vì sao?

Tính nhanh:

a ) − 1 3 . − 1 5 . − 1 7 . − 1 9

b ) 1000 − 1 3 1000 − 2 3 1000 − 3 3 . ... 1000 − 60 3

c ) A = 1 1 .2 + 1 2 .3 + . ... + 1 99 .10

When the manager of our company retires, the deputy manager will ______ that position.

A. stand for

B. take over 

C. catch on 

D. hold on

It is not always easy to make a good ______ at the last minute.

A. decide

B. decision 

C. decisive 

D. decisively

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.

A series of programs have been broadcast to raise public awareness of healthy living.

A. experience

B. understanding 

C. confidence 

D. assistance

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.

Heavy rain makes driving on the road very difficult

A. hard

B. easy 

C. interesting 

D. simple

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

It's not a pleasant feeling to discover you've been taken for a ride by a close friend.

A. driven away

B. deceived deliberately

C. given a lift 

D. treated with sincerity