【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
在线课程【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当...的时候；as因此；before在...之前。故选D。