Câu hỏi: We have to suffer from traffic congestion and pollution every day.

A. accident

B. fullness

C. mass

D. crowd

Câu 1: For environmental safety, we need to find ways to reduce emission of fumes and smoke of factories.

A. leak

B. release

C. poison

D. pollutant

Câu 2: The advances of commercial airplanes resulted in a shrinking world.

A. decreasing

B. reduced

C. smaller

D. compressing

Câu 3: More and more specious animals ________ of environmental problems.

A. exit

B. survive

C. save

D. die

Câu 4: Nylon is a man-made fibre, the use of which has helped more people to have cheaper and more colourful clothes to wear.

A. natural

B. plastic

C. synthetic

D. artificial

Câu 5: WHO _________ for World Health Organization.

A. sits

B. lies

C. stands

D. leans

Câu 6: To score a goal, players need to learn how to pass in both__________ and horizontal positions.

A. vertical

B.  strange

C. parallel

D. oval