1.Which of the following is a typical symptom of the bends?()
A.A twisted body.
B.A gradual decrease in blood supply.
C.A sudden release of nitrogen in blood.
D.A drop in blood pressure.
2.The purpose of Rothschild’s study is to see .
A.how often ichthyosaurs caught the bends
B.how ichthyosaurs adapted to decompression
C.why ichthyosaurs bent their bodies
D.when ichthyosaurs broke their bones
3.Rothschild’s finding stated in Paragraph 4 .
A.confirmed his assumption
B.speeded up his research process
C.disagreed with his assumption
D.changed his research objectives
4.Rothschild might have concluded that ichthyosaurs .
A.failed to evolve an anti-decompression means
B.gradually developed measures against the bends
C.died out because of large sharks and crocodiles
D.evolved an anti-decompression means but soon lost it
语篇解读:本篇为科普说明文,文章主要说明了鱼龙得减压病的原因和后果。并介绍了Dr Rothschild通过研究,推翻了关于鱼龙进化的一些猜测。
答案及剖析:1.A 细节理解题。由The consequence...is sharp pain and a bent body—thus the name减压病的典型症状是身体弯曲,可知答案为A项。
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