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; +∞)
Giá trị của đạo hàm của hàm số A. f'(1) = 1. B. f'(1) = . C. f'(1) = 0. D. f'(1) = 2.
A. -sinx. B. sinx. C. . D. .
A. f'(0) = 0 B. Không có. C. f'(0-) = 0; f'(0+) không có. D. f'(0+) = 0; f'(0-) không có.
Choose the best answer for the following sentence:She suffered a lot from ____________ after the death of her husband. A. depress B. depressingly C. depressed D. depression
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến