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【题目】While we are very interested in Realcine,we will still need much more information we can make a decision to use it.

A. if B. when

C. as D. before

【答案】D

【解析】句意:虽然我们对Realcine很感兴趣,在我们可以决定用它之前我们还需要更多的信息。此题考察连词的辨析,if如果;when...的时候;as因此;before...之前。故选D。

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