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还有一个,看看哪个好。 2. search engines -- which enable a computer user to find information by typing in a word or combination of words -- covers a diminishing fraction of Web pages and take a long time to list new sites.加粗部分不确定,COVERS应该为COVER,凭这个应该可以排除三个, 剩下两个是 D. cover a diminishing fraction of rapidly increasing number of webpages and take a long time to list new sites. E. cover a diminishing fraction of rapid growth of the number of webpages, and it takes |