2. 专升本
  3. A bottle weights less after air is taken out, ______proves that air has weight.

A bottle weights less after air is taken out, ______proves that air has weight.

admin2007-10-09  29
问题 A bottle weights less after air is taken out, ______proves that air has weight.
选项 A、we
B、it
C、which
D、what
答案C
解析 非限制性定语从句要用关系代词which。非限制性定语从句用于补充说明前一句话。
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