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标题: 在问道SC题 [打印本页]

作者: bluesky0528 时间: 2007-5-18 14:52
标题: 在问道SC题

If a drug that is already on the market has the potential to help adults and children who have the same disease, or if it is widely used in children and the absence of labeling seems dangerous, the FDA can require that the drug undergo pediatric study.

(A) that the drug undergo

(B) that the drug undergoes

(D) the drug undergoing

(E) the drug to have to undergo

答案是A，为什么不是B呢，the drug为单数啊~~~

作者: cancerbobo 时间: 2007-5-18 15:14

require后面的从句用虚拟语气，省略should

ps:表示命令，建议，要求的词后面的从句要用虚拟语气

作者: bluesky0528 时间: 2007-5-18 15:16
我也是这么想的，但是开始不确定，谢谢帮忙确定了~~~

作者: jzq 时间: 2007-5-18 17:29

LZ,还是先看OG吧

这样比较事半功倍，另外，可以把贴发到专区去，也比较快得到帮助

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