Cho đa giác đều có 14 cạnh. Tính: Số đường chéo của đa giác.

l i m 3 + 3 2 + 3 3 + . . . + 3 n 1 + 2 + 2 2 + . . . + 2 n  bằng:

A.  + ∞

B. 3

C.  3 2

D.  2 3

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

A. visits

B. destroys

C. believes

D. depends

Choose the word whose main stress is placed differently from the others in each group

A. dinner

B. during

C. although

D. number

Alfred Nobel invented dynamite

A. It was Alfred Nobel that dynamite was invented

B. It was Alfred Nobel that was invented dynamite

C. It was dynamite that Alfred Nobel was invented

D. It was dynamite that was invented by Alfred Nobel

“……………………” They were held in 1958 in Japan.

A. When were the 3rdAsian Games held?

B. When and where was the 3rd Asian Games held?

C. Where were the 3rdAsian Games held?

D. When and where were the 3rd Asian Games held?