Câu hỏi: The US troops are using much more sophisticated weapons in the Far East.

A. difficult to operate

B. expensive

C. complicated

D. straightforward

Câu 1: There is growing concern about the way man has destroyed the environment.

A. reduce

B. attraction

C. consideration

D. speculation

Câu 2: He was so insubordinate that he losst his job within a week.

A. fresh

B. disobedient

C. understanding

D. obedient

Câu 3: Doctors have been criticized for their indiscriminate use of antibiotics.

A. disciplined

B. selective

C. wholesale

D. unconscious

Câu 4: Nutritionists believe that vitamins circumvent diseases.

A. defeat

B. nourish

C. help

D. treat

Câu 5: The couple tried to converse in the busy restaurant, but they couldn't hear themselves speak so they went elsewhere.

A. talk

B. stop talking

C. chat

D. communicate

Câu 6: About 95% of all animals are invertebrates which can live anywhere, but most, like the dtarfish and crab, live in the ocean.

A. with backbones

B. with ribs

C. without ribs

D. without backbones