62.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
63.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
64.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
【要点综述】 本篇为科普说明文,讲述鱼龙患减压病的原因和后果。Dr Rothschild通过实验推翻了关于鱼龙进化的一些猜测。
61.A 细节理解题。根据the bends可定位到首段。由“The consequence…is sharp pain and a bent body—thus the name.”可知答案,a bent body和a twisted body是同义转换。由第二句的“Nitrogen dissolved in his blood is suddenly liberated by the reduction of pressure.”可知,这是说the bends的形成原因,故C、D项错,而B项文章没有提及。
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