A. 0.
B. -1.
C. 5.
D. -3.

Choose the best answer for the following sentence:
Very few passenger ships cross ___________ Atlantic these days.
A. an
B. the
C. Ocean
D. Ø

Cho hàm số  y=cos22x. Vi phân của hàm số tại x là:
A. dy=4cos2xsin2xdx.
B. dy=2cos2xsin2xdx.
C. dy=-4cos2xsin2xdx.
D. dy=-2cos2xsin2xdx.

Choose the best answer for the following sentence:
His decision merited the ___________ of any sensible person. 
A. access               
B. acceptation                   
C. approval                   
D. appearance

Choose the best answer for the following sentence:
My new friend is a law student and he _________ for three years now.
A. studies
B.  is studying
C. was studying
D. has been studying

Choose the best answer for the following sentence:
The Prime Minister _____________ the people many times about the bad effects of drug.
A. reminded                
B. said                  
C. told                 
D. warned

Choose the best answer for the following sentence:
She received me kindly, and she got me a ______________ in a shop. 
A. situation                
B. rank                 
C. status               
D. state

Choose the best answer for the following sentence:
"Those eggs of different colors are very artistic.” “Yes, they __________ in Russia.”
A. were painted             
B. were paint                  
C. were painting    
D. painted

Hàm số h(x) = 1 - tan2x là đạo hàm của hàm số 
A. 2x - tanx.
B. x - tanx.
C. -2tanx(1 + tan2x).
D. Các kết quả đã cho đều sai.

Với hàm số f(x)=xx+1 . Tập nghiệm của bất phương trình f'(x)>0 là:
A. (-∞; 1) \ {-1; 0}
B. (1; +∞)
C. (-∞; -1)
D. (-1; +∞)