Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
______ charge for ______ excess luggage is £10 ______ kilo.

A. The; an; a

B. The; 0; a

C. 0; 0; a

D. 0; an; the

Mark the letter A, B, C or D to indicate the correct answer to each of the following

questions.

Paul Samuelson was the first American to won the Nobel Prize in ­­­_____.

A. economy

B. economic

C. economical

D. economics

Nguyên tử X có 19 electron. Ở trạng thái cơ bản X có so obitan chứa e là:

A. 8

B. 9

C. 11

D. 10