2. 外语
  3. We have not obtained very much experiment data ______ conclusion between the two possibilities.

We have not obtained very much experiment data ______ conclusion between the two possibilities.

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问题 We have not obtained very much experiment data ______ conclusion between the two possibilities.
选项 A、on which to base
B、to base on
C、which is based on
D、to be based on
答案A
解析 定语从句题。句子的主语是we，因此句中的动词base应当用主动形式，首先排除 C 和D 选项；根据句子的意思，base的宾语是conclusion，experiment data是介词on的宾语，故正确答案是A 。B 没有体现出base和conclusion的动宾关系。
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