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: With the dawn of space exploration, the notion that atmospheric conditions on Earth may be unique in the solar system was strengthened.

A. outcome

B. continuation

C. beginning

D. expansion

Câu 2: These projects have proved to be very effective in dealing with global climate change, which was considered an insoluble problem in the first 30 years of this century.

A. hard

B. challenging

C. unsolvable

D. unbearable

Câu 3: The average, ________watches television for about 15 hours a week.

A. spectator

B. observer

C. audience

D. viewer

Câu 4: It will take more or less a month to prepare for the wedding.

A. approximately

B. generally

C. frankly

D. simply

Câu 5: You should concentrate on what the interviewer is saying.

A. be related to

B. express feelings

C. express the thoughts

D. pay all attention to

Câu 6: She's a down-to-earth woman with no pretensions.

A. ambitious

B. creative

C. idealistic

D. practical