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: Those companies were closed due to some seriously financial problems.

A. taken off

B. put away

C. wiped out

D. gone over

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: 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 4: You can’t stop smoking immediately. Just try to …….. a little.

A. go on

B. give up

C. keep

D. delete

Câu 5: Many animals were born in captivity. Resultantly, they do not always breed well.

A. imprisonment

B. lock

C. detention

D. freedom

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

A. ambitious

B. creative

C. idealistic

D. practical