2. 外语
  3. As is known to all, there are many forms of energy, ______is solar energy.

As is known to all, there are many forms of energy, ______is solar energy.

admin2014-07-20  49
问题 As is known to all, there are many forms of energy, ______is solar energy.
选项 A、one of that
B、one of whom
C、which of one
D、one of which
答案D
解析
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