Câu hỏi: Toxic chemicals continue to be dumped in the North Sea.

A. stop

B. go on

C. follow

D. begin

Câu 1: 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 2: This national park is special because it has plants and animals from both tropical and temperate zones.

A. warm

B. pole

C. cool

D. wet

Câu 3: There has been no discernible improvement in the noise levels since lorries were banned.

A. clear

B. obvious

C. thin

D. insignificant

Câu 4: 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 5: If any employee knowingly breaks the terms of this contract, he will be dismissed immediately.

A. coincidentally

B. deliberately

C. instinctively

D. accidentally

Câu 6: In remote communities, it's important to replenish stocks before the winter sets in.

A. remake

B. empty

C. refill

D. repeat