Ba điểm A, B, C có phải là ba điểm thẳng hàng hay không ?

A. Có

B. Không

Email and instant messaging services have _________ global communication.

A. revolutionised

B. revolutionary

C. revolution

D. revolutionarily 

Mark the letter A, B, C or D to indicate the word that differs from the other three in the position of the primary stress in each of the following questions.

A. actor

B. adult

C. effort

D. area

Mark the letter A, B, C or D on your answer sheet to indicate the underlinedpart that needs correction in each of the following questions

They are (A) planning (B) on attending the convention nextmonth, (C) and (D) so I am.

A.planning

B.on attending

C.and

D.so I am

Số lớn :101

Số bé : 55

Tìm số nguyên x, biết:

a) (25 + x) - 25 = 0;                          b) ( -19) - ( x- 19) = 0;

c) 15 + ( x - 10) = 23;                        d) 19- ( - 13 + x) = 40