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选修⑦
Unit 3
单元主题语篇训练
I,阅读理解
1.What causes the phenomenon of coral bleaching?
A
A.Diverse species.
Coral reefs(珊瑚礁)are an integral part of sea:
B.Noise pollution.
life and sustain it by providing shelter and habitat to
C.Fishing industry
various organisms.They also supply and recycle
D.Climbing temperatures.
nutrients as well as enablea growing fish.What approach is introdueed to recover the ora
population,along with other species,for a healthy:
reefs?
A.Removing damaged coral reefs.
and diverse ecosystem.However,the rise in average
B.Using loudspeakers to keep fish away.
water temperatures due to climate change has
C.Building new homes for sea species.
resulted in more frequent and long-time "coral:
D.Playing certain sounds to attract fish.
bleaching(珊瑚白化)”events that damage their:3.Why are Steve Simpson's words quoted?
health,causing fish and other sea species to abandon A.To provide some findings of the study.
them.
B.To show the progress of the experiment.
In order to restore this delicate ecosystem,
C.To explain reasons for the new approach.
scientists from the U.K.and Australia conducted a D.To give another solution to the problem.
study that involved using loudspeakers underwater4.What can we infer from the last paragraph?
near damaged coral reefs to make them sound:
A.The attempts are in vain.
healthy and attract fish,potentially kick-starting the
B.Natural recovery is impossible.
C.Initial success has been achieved.
natural recovery process of coral reefs and their:
D.The coral reefs have returned to normal.
dependent life forms.The location for this
B
experiment was the Great Barrier Reef in the Coral:
Earth is far more alive than we previously
Sea found alongside the east of Queensand.thouhtaccording todeep life"studies that reveal
Australia.The site is noted to have the largest coral
a rich ecosystem beneath our feet that is almost
reef system in the world.
twice the size of all the world's oceans.Despite
"Healthy coral reefs are remarkably no