高手请进,帮忙解决几道词汇语法题(请给出答案并解释)，谢谢！

1.It turns out that seemingly ordinary old man is ____a prestigious scientist in genetics .
A.nothing but B.anying but C.no less than D.nothing more than
(题干是不是语意前后矛盾?)
2.It is as a well-known scholar that he represents himself ,and____he is warmly received.
A.as much B.such as C.as that D.so that
(题干中，as...that 是什么句式？）
3.Which of the following is the correct response to "Susie had a wonderful time at the party"?
A.So she had, and so did I B.So had she ,and so did I
C.So she did, and so did I D.So did she, and so did I
(had 与did 的区别？）
4.She tried dozens of companies only to be told no_____available right now.
A.position B.post C.professiong D.occupation
(position 与 post 的区别？)
5.I don"t think he____there as no one seems to have seen him.
A.could have been B.can be C.should be D.might have been
(could与might 区别？)
6.She changed a lot from the years of suffering.Sh

1.It turns out that seemingly ordinary old man is ____a prestigious scientist in genetics .
A.nothing but B.anying but C.no less than D.nothing more than
(题干是不是语意前后矛盾?)
没有矛盾啊，意思是：才发现那个看起来平庸的老人居然是一个受人尊敬的遗传学家。
选C

2.It is as a well-known scholar that he represents himself ,and____he is warmly received.
A.as much B.such as C.as that D.so that
(题干中，as...that 是什么句式？）
as和that不组成句式、it is 和that一起组成强调句。
选D

3.Which of the following is the correct response to "Susie had a wonderful time at the party"?
A.So she had, and so did I B.So had she ,and so did I
C.So she did, and so did I D.So did she, and so did I
(had 与did 的区别？）
so she did的意思是“是的，她是玩的很开心。”
so did I 是“我也是”的意思，倒装句，原句是i did so （too）
had和did是根本就不同的2个词，没什么好比较的。
这题考的是用助动词表示过去式
选C

4.She tried dozens of companies only to be told no_____available right now.
A.position B.post C.professiong D.occupation