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

游客2024-01-13  30

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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