Question

关于英语问题，又谁能帮忙解答下啊。。。

：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to be an expert in astronomy , but in actural fact he is quite ignorant on the subject.______ he knows about it is out of date and inaccurate.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，有谁能帮忙解答下

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

答案是C，我选了个A，请帮忙解答下

Answer 1

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。