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Unit 4
单元主题语篇训练
I.阅读理解
:
More and more invading insects and plants have
The Antaretic's snow-white environment is:been found on the Antarctic and have required
going green and facing other unexpected threats.
removal."The insects and plants that are native to
Scientists say that as temperatures go up in the the Antarctic have survived there for thousands of
polar areas,invading(侵袋)plants and inseets,;years,.”said Dominic..“We have to act now if we
including the flies,cause a major threat.
want to save the environment."
More and more of these invaders,in the form of1.What does the underlined word "mosses"in
larvae (or seeds,are surviving in coastal areas
Paragraph 3 refer to?
around the South Pole,where the temperature has:
A.Houseflies.
B.Coastal areas.
risen by almost 3C over the past five decades.
Giers hve melted.epoin more land which hs.What do weknow about the houseflies in the
C.A kind of plants.
D.A kind of animals.
been occupied by mosses that have been found to be
Antarctic?
growing more quickly and thickly than ever before-
providing potential green homes for invaders.
A.They are native to the Antarctic.
"The common houseflies are a perfect example
B.They will die out because of the freezing
of the problem the Antarctic now faces from:
weather.
invading species,"said Dominic Hodgson of the
C.They come to the Antarctic from nearby islands
British Antarctic Survey."They arrive by ship,
on their own.
where they exist in kitchens.They now have an
D.They could severely influence the native species
increasing chance of surviving in the Antarctic as it:
of the Antarctic.
warms up,and that is a worry.Insects like the:3.What is the main cause of the Antaretic going
houseflies carry bacteria that could have a deadly
green?
effect on native life forms."
A.The arrival of scientists.
The Antarctie has several native species of
B.The increasing number of visitors.
insects.Together with its native mosses,these are;
C.The rapid spread of native plants.
no