unit 7 ENVIRONMENTAL PROTECTION

Choose the word with the underlined part which is differently pronounced from the others.

• pollution

• protect

• carbon

• ecosystem

Choose the word which is stressed differently from the others.

• species

• single

• extinction

• habitat

If the temperature _____________ rising, the polar ice caps will melt.

• kept

• keeps

• has kept

• will keep

Because of _______ pollution, the bicycle may someday replace the automobile.

• water

• air

• noise

• soil

Students should learn some practical ways that help to __________ pollution.

• save

• cure

• reduce

• shorten

__________ she left the party, Jenny said goodbye to the host.

• Before

• After

• As soon as

• Until

People think that global warming ____________ lots of problems in the future.

• causes

• is causing

• will cause

• has caused

They travelled across India, and then flew on to Japan.

• They travelled across India as soon as they flew on to Japan.

• After flying on to Japan, they travelled across India.

• They didn't travel across India until they flew on to Japan.

• After travelling across India, they flew on to Japan

Parents should teach children not to __________ wastes on the road.

• litter

• poison

• cause

• pick up

It was not until midnight that the noise next door stopped.

• The noise next door stopped before it was midnight.

• The noise next door only stopped at midnight.

• The next-door neighbours made noise after midnight.

• I wanted the noise next door to stop before midnight.