英语习题,大侠进1._______ is the center of our planetary system was

英语习题,大侠进
1._______ is the center of our planetary system was a difficult concept to grasp in the Middle Age.
A) It is the sun and not the earth
B) Being the sun and not the earth
C) The sun and not the earth
D) That the sun and not the earth
2._______ it or not,his discovery has created a stir in scientific circles.
A) Believe
B) To believe
C) Believing
D) Believed
3._______ kinds of matter in the world.
A) There is a few million
B) That there are millions
C) There are a few million
D) It is millions
4._______ man can now create radioactive elements,there is nothing he can do to reduce their radioactivity.
A) As
B) Whether
C) While
D) Now that
5._______ me,I think an English-Chinese dictionary is much more helpful to our study than an All-English dictionary.
A) As far as
B) As far
C) As for
D) As regard
6._______ my return,I learned that Professor Smith had been at the Museum and would not be back for several hours.
A) At
B) With
C) On
D) During
7._______ of the burden of ice,the balloon climbed up and drifted to the South.
A) To be free
B) To free
C) Freeing
D) Freed
8._______ one time,Manchester was the home of the most productive cotton mills in the world.
A) On
B) By
C) At
D) Of
9._______ quite recently,most mothers in Britain did not take paid work outside the home.
A) Until
B) Before
C) From
D) Since
10._______ she first heard of the man referred to as a specialist.
A) That was from Stephen
B) It was Stephen whom
C) It was from Stephen that
D) It was Stephen that

1.选D 典型的主语从句
2.选A believe it or not 不论你相不相信——固定搭配
3.选C kinds of matter 复数
4.选C 表转折
5.选C as for me 对于我来说——固定搭配
6.选C on my return 在我回来时——固定搭配
7.选D 一道典型的非谓语 非谓语Freed表被动 真正的谓语是climbed
8.选C at one time 曾经——固定搭配
9.选A until……not……句型
10.选C 典型的强调句
————————————————————————————
呵呵~打了我老半天啊~希望对楼主有用哈