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1. 阅读理解
Some years ago, Michel-Andre found himself staring at the body of a dead
whale on a beach in the Canary Islands. It was obvious that the animal had been
struck violently by a ship——but why? Only later, after surveying the whales
which lived in the area and measuring the increase of sound pollution from
ships did it become clear that there was a link.
The whales had become desensitised to the noise of approaching
boats and were being struck by them, often seriously. "We never thought
that this could be something that could kill," recalls (回忆) Andre, who is the director
of the Laboratory of Applied Bioacoustics at the Technical University of
Catalonia, Barcelona.
Andre has spent 20 years developing an advanced system to better
understand why incidents like this happen. His underwater microphones have
exposed a world of deafening sound and animal communication never observed with
such clarity(清晰)
before.
It was not an easy task. Sound waves don't travel through water in the
uniform, predictable way they do through the air. Instead, the temperature,
salinity (盐度)
and, flow of water have great effects on their path.
What can be done? One solution is to change shipping routes to courses
where ships are statistically less likely to meet animals. It's also possible
to slow ships down to 18km/h or less, which is less likely to seriously injure
a whale.
As for dealing with the root cause of the problem, the UN's
International Maritime Organisation has already published guidelines on how to
quieten ships, but
it will be a while before the effects of such changes might be observed.
"The ocean is not our world," comments Andre. But it is ours
to look after. And thanks to his work, we can better understand the effects of
subsea sound pollution.
（1）What does the underlined word "desensitised" in Paragraph 2 mean?
A . Stubborn.
B . Flexible.
C . Dull.
D . Friendly.
（2）What's one way to solve the problem according to the text?
A . To lower the speed of ships.
B . To reduce the number of ships.
C . To set up preserves under the sea.
D . To give the injured animals timely treatment.
（3）What is the author's attitude towards what Michel Andre has done?
A . Doubtful.
B . Disapproving.
C . Positive.
D . Uncaring.
（4）What is the text mainly about?
A . A great expert.
B . Noise in the sea.
C . Animals in the sea.
D . Sea exploration technology.
