Câu hỏi: Professor Berg was very interested in the diversity of cultures all over the world.

A. variety

B. changes

C. conservation

D. number

Câu 1: Childbearing is the women's most wonderful role.

A. Giving birth to a baby

B. Bring up a child

C. Educating a child

D. Having no child

Câu 2: The related publications are far too numerous to list individually.

A. much

B. legion

C. few

D. full

Câu 3: The journalist refused to disclose the sourse of his information.

A. open

B. reveal

C. shut

D. conceal

Câu 4: This quartet of extraodinarily talented musicians generated a phenomenal number of pieces that won gold records.

A. irresponsible

B. incompetent

C. stupid

D. crazy

Câu 5: The use of lasers in surgery has become relatively commonplace in recent years.

A. comparatively

B. relevantly

C. absolutely

D. almost

Câu 6: Did anyone acknowledge responsibility for the outbreak of the fire?

A. inquire about

B. accept

C. report

D. find out