Câu hỏi: Rapid run-off would cause frequent floods and leave little water during fry seasons.

A. sometimes

B. unusual

C. irregular

D. little

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

A. ease

B. attraction

C. consideration

D. speculation

Câu 2: If any employee knowingly breaks the terms of this contract, he will be dismissed immediately.

A. coincidentally

B. deliberately

C. instinctively

D. accidentally

Câu 3: The US troops are using much more sophisticated weapons in the Far East.

A. expensive

B. complicated

C. simple and easy to use

D. difficult to operate

Câu 4: Visitors, especially children, can go there to learn how to recognize the different species of animals and plants.

A. pure

B. same

C. alike

D. whole

Câu 5: Because Jack defaulted on his loan, the bank took him to court.

A. failed to pay

B. paid in full

C. had a bad personality

D. was paid much money

Câu 6: There has been no discernible improvement in the noise levels since lorries were banned.

A. clear

B. obvious

C. thin

D. insignificant