2. 外语
  3. The mixture of elements in the air can be thought ______ a solution of gases.

The mixture of elements in the air can be thought ______ a solution of gases.

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问题 The mixture of elements in the air can be thought ______ a solution of gases.
选项 A、of as
B、of
C、as
D、of to
答案A
解析 本句动词原形think与介词of构成短语动词。
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大学英语四级

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