1. It is uncertain _________side effect the medicine will bring about, although about two thousand patients have taken it.
A. that B. what C. how D. whether
【答案】B。解析:考查主语从句,句意:尽管大约有两千名病人服用过这种药物,但是,它会带来什么样的副作用还不确定。side effect意思是“副作用”,还原主语从句中的主干是the medicine will bring about _________ side effect。故选择what,形容词“什么样的”,起修饰作用。因此B为正确答案。
2. — Would you please tell me __________?
—Yes. There’s a bank over there.
A. When can I exchange money B. where can I exchange money
C. when I can exchange money D. where I can exchange money
【答案】D。解析:考查宾语从句语序。句意:你能告诉我我在哪儿能换钱吗?用陈述句语序,排除AB,询问地点,排除C,因此D为正确答案。
3. The infrastructure of a country is __________ makes everything run smoothly.
A. how B. which C. that D. what
【答案】D。解析:考查表语从句语序。分析句子可知表语从句"__________ makes everything run smoothly"句中缺少主语,所以用what引导表语从句,how 引导表语从句只能在句中做状语,which可以做主语但是意义是"哪一个",that在表语从句中不做任何的成分只起连接作用,因此D为正确答案。