关于英语问题,..：1.He claims to be an expert in astronomy ,but in a

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关于英语问题,..
：1.He claims to be an expert in astronomy ,but in actural fact he is quite ignorant on the subject.______ he knows about it is out of date and inaccurate.
A.So much B.How much C.So little D.What little
正确答案是D,可是我选C,
2.Navigators on ships and aircraft use a compass to determine _____they are heading.
A.to where the direction B.that direction of which
C.where the direction D.the direction in which
正确答案是D,为什么C不对啊?
3.Perhaps even more important than the accuracy and reliability of a meteorological instrument_______.
A.that its correct position B.that positioning it is correct
C.is positioned correctly D.is that it be positioned correctly
正确答案是D,请问C为什么不可以?
4.He doesn't want to stay at home ____go to the movie theatre.
A.more than B.much less than C.any more than D.no less than
我选了个A,

第一个,考察的是名词性从句由what引导.再根据意思可只要选的little.
第二个,考察的是定语从句的连接词故选D,至于C答案首先不完整应该再加上is再一个是它放到句子里头后面也没法连接.
第三个,前面整体是主语部分,所以需要个谓语和表语部分,D答案刚好符合that引导表语从句.
第四个,答案应该就是C原因说不上来,只凭语感.

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