2. 职称英语
  3. It is possible that Native Americans originally have migrated to the Western Hem

It is possible that Native Americans originally have migrated to the Western Hem

游客2025-02-25  7
问题 It is possible that Native Americans originally have migrated to the Western Hemisphere over a bridge of land that once existed between Siberia and Alaska.
选项 A、have migrated to the Western Hemisphere over a bridge of land that once existed
B、were migrating to Western Hemisphere over a bridge of land that existed once
C、migrated over a bridge of land to Western Hemisphere that once existed
D、migrated to the Western Hemisphere over a bridge of land that once existed
E、were migrating to the Western Hemisphere over a bridge of land existing once
答案 D
解析 由句意判断，that从句中migrate是发生在过去的事，A中用现在完成时和B、E中的过去进行时都是没有任何时间依据的。由句末的未划线部分between短语的位置可断定C错D对，因为between短语修饰a bridge of land，正如D所表达的，而不是修饰the western Hemisphere。C的表达恰好导致了这种修饰关系的错位。
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