请英语高手赐教：24.()whatthesituationwouldbelike,theydecidedtokeepsilent.A.HavingnotknownB.KnowingnotC.NotknowingD.Notknow

Question

请英语高手赐教：
24.( )what the situation would be like ,they decided to keep silent.
A.Having not known B.Knowing not C.Not knowing D.Not know

Answer 1

1.答案：C.
2.翻译：（因为）不知道情况/局势将会怎样,他们决定保持沉默.
3.
1）此题考查非谓语动词做原因状语从句.
2）该句主语they和非谓语动词know之间明显是主动关系,所以必须用其现在分词形式knowing,排除D；
3）而现在分词的否定结构必须是在有ing结构的那个单词前面加上not,所以排除AB.
4）综上所述,正确答案为C.