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大家好,TPO2里the origins of cetaceans有一道题不明白,答案是1,我选得3.希望大家帮忙解决一下。谢谢! 题目:10. Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information. ○Even though Ambulocetus swam by moving its body up and down, it did not have a backbone. ○The backbone of Ambulocetus, which allowed it to swim, provides evidence of its missing fluke. ○Although Ambulocetus had no fluke, its backbone structure shows that it swam like modern whales. ○By moving the rear parts of their bodies up and down, modern whales swim in a different way from the way Ambulocetus swam. 高亮部分:The structure of the backbone shows, however, that Ambulocetus swam like modern whales by moving the rear portion of its body up and down, even though a fluke was missing. |
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