2. 外语
  3. The ______ of human knowledge are being pushed further.

The ______ of human knowledge are being pushed further.

admin2011-02-04  37
问题 The ______ of human knowledge are being pushed further.
选项 A、boundaries
B、borders
C、limits
D、edges
答案B
解析 近义词辨析。本题四个选择项都有“边”“界”之意，但boundary分界、分界线，border边、缘，limit界限、限度，edge边、边界，依题意选B。
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大学英语六级

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