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  3. Most fishes and many reptiles have ribs along most of the spine, but in mammals

Most fishes and many reptiles have ribs along most of the spine, but in mammals

游客2023-12-26  6
问题 Most fishes and many reptiles have ribs along most of the spine, but in mammals finding them only in the chest area.
选项 A、they find
B、which they find
C、they are found
D、which they are found
答案 C
解析 本题重点考查并列连词的用法。这是一个but连接的两个并列分句，在意义上形成前后对照，但是第二个分句却没有主语和谓语动词，只有一个非谓语形式finding them，因此是错误的。四个选项中首先可以排除B和D选项，从形式看它们是定语从句，不是分句。A和C选项中，they代指前面的ribs，但应该使用被动式才对，故选C。
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