Câu hỏi: Professor Berg was very interested in the diversity of cultures all over the world. (Mark the letter A, B, C, or D to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions.)

A. variety

B. changes

C. conservation

D. number

Câu 1: The computer allows us to work fast and _______.

A. efficiently

B. differently

C. variously

D. freshly

Câu 2: You should not burn _______. You had better dig a hole and bury it.

A. dishes

B. lab

C. garbage

D. shift

Câu 3: It's hard work looking _______ three children all day.

A. after

B. up

C. to

D. through

Câu 4: He was _______ when I had those problems and said whatever I did he would stand by me.

A. supportive

B. exciting

C. busy

D. dull

Câu 5: Socially, the married _______ is thought to be the basic unit of society.

A. couple

B. pair

C. twins

D. double

Câu 6: Many young people have objected to _______ marriage, which is decided by the parents of the bride and groom.

A. agreed

B. shared

C. contractual

D. sacrificed