If people stop destroying animal’s natural habitat, more species will survive and produce ______.
A.offspring
B.landscape
C.ecology
D.benefit

Engineers at Red Motors have just created the corporation's first car _______ by solar energy.
A.powerful
B.powering
C.powered
D.power

Our solar system is in a galaxy_______ the Milky Way.
A.calling
B.
C.called
D.which called

In many parts of the United States, large areas of land have been made into national parks to protect and __________ the natural beauty of the land.
A.preservation
B.preserve
C.preservable
D.preservement

There are a number of safety procedures ______ which you should be aware.
A.about
B.in
C.of
D.on

Choose the underlined part among A, B, C or D that needs correction.Despite of (A) a language barrier, humans (B) have managed to communicate with others (C) through sign language, in which (D) certain motions stand for letters, words, or ideas.
A.Despite of (A)
B.in which (D)
C.with others (C)
D.humans (B)

Radio stations at which (A) broadcast only news (B) first appeared (C) in the (D) 1970s.
A.appeared (C)
B.only news (B)
C.at which (A)
D.in the (D)

JKL Motorbikes sells (A) six different models, the first which (B) they started (C) making (D) in 1985.
A.which (B)
B.started (C)
C.making (D)
D.sells (A)

Visitors were (A) not permitted entering (B) the park after dark because of (C) the lack of (D) security and lighting.
A.entering (B)
B.because of (C)
C.lack of (D)
D.were (A)

The panda's ______ habitat is the bamboo forest.
A.nature
B.naturalized
C.naturally
D.natural