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

A. ambitious

B. creative

C. idealistic

D. practical

Câu 3: After several injuries and failures, things have eventually ______ for Todd when he reached the final round of the tournament.

A. looked up

B. gone on

C. taken up

D. turned on

Câu 4: It is crucial that urban people not look down on rural areas.

A. evil

B. optional

C. unnecessary

D. vital

Câu 5: The Freephone 24 Hour National Domestic Violence Helpline is a national service for women experiencing domestic violence, their family, friends, colleagues and others calling on their behalf.

A. in the same country

B. in the same family

C. in the same office

D. in the same school

Câu 6: It isn't ____ for him to take charge of the financial burden on his family.

A. boring

B. expensive

C. easy

D. mind