5.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.
答案:A 推理判断题。根据第一段第二句话“The consequence, if the bubbles accumulate in a joint, is sharp pain and a bent body—thus the name”当血液中的氮气释放,聚集在关节处,结果就是剧烈的疼痛和身体的弯曲——这就是bends这个名字的由来。由此可知,bends的典型症状就是弯曲的身体。
6.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
答案:B 细节理解题。根据第三段第二句话“What he particularly wanted to investigate was how ichthyosaurs adapted to the problem of decompression over the 150 million years.”可得出答案。
7.Rothschild's finding stated in Paragraph 4
________.
A.confirmed his assumption
B.speeded up his research process
C.disagreed with his assumption
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