请该出以下英语问题的答案及解析

1,Never before that night ____ the extent of my own power. 选 C (否定词在句首须用倒装)
A.had I felt B. I felt C.did I feel D.I had felt
2,Only under special circunstances____to take make-up tests.选A(only接介词短语在句首须用倒装)
A.are freshmen permitted B. freshmen are permitted
C.permitted are freshmen D.are permitted freshmen
3,The residerts ,____had been damaged by the flood ,were given help by the Red Cross. 选C(定语从句结构)
A.all their homes B.all whose homes
C.all of whose homes D.all of their homes
4,Today,____major new products without conducting elaborate market research.选B(hardly ever几乎没有)
A.corporations hardly introduce ever B.corporations hardly ever introduce C.hardly corporations introduce ever D.hardly corporations ever introduce
5,Radio, television and press ____of conveying news and informtion.选B(the+数词+最高级)
A.are the most three common means B.are the three most common means C.are the most common three means D.are three the most common means
6,We have been told that under no circumstances____the telephone in the office for personal affairs. 选A(under no circumstances表否定含义，放在句首应倒装)
A.may we use B.we may use C.we could use D.did we use
7,____when she started complaining.选B(hardly…when 一……就……)
A.Not until he arrived B.Hardly had he arrived
C.No sooner had he arrived D.Scarcely did he arrived
8,The atmosphere is as much a part of the earth as ____its soils and the water of its lakes ,rivers and oceans.选B(这是倒装结构，主语是复数，在后面“its soils and the water of its lakes ,rivers and oceans”)
A.has B.are C.is D.do
9,____that they may eventually reduce the amount of labor needed on construction sites by 90 percent .选 C(so…that…句型中,so放在句首时要用倒装结构)
A.Such construction robots are clever B.So clever the construction robots are C.So clever are the construction robots
D.Such clever construction robots are
10,In the southwestern part of the United States ____built in the last century.选C(地点副词放在句首时须用倒装)
A.they are many abandoned mining towns
B.where there are many abandoned mining towns
C.are many abandoned mining towns
D.many abandoned mining towns are
-------高三英语教师在线解疑

完全是正确的

这是高三的吗？？
真的？
我上初三有的在奥塞书见到过，就是词有个别的不熟悉

你们正好是学到倒装部分来了吧．． 高三／