Câu hỏi: 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 1: More and more specious animals ________ of environmental problems.

A. exit

B. survive

C. save

D. die

Câu 2: 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 3: WHO _________ for World Health Organization.

A. sits

B. lies

C. stands

D. leans

Câu 4: My mother told me to take out the __________ while she was cooking dinner.

A. doubt

B. rubbish

C. pioneer

D. philosopher

Câu 5: We have to suffer from traffic congestion and pollution every day.

A. accident

B. fullness

C. mass

D. crowd

Câu 6: It is important to raise the people’s _________ of environmental conservation.

A. know

B. awareness

C. knowledge

D. cognition