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【简答题】
O. Henry was a pen name used by an American writer of short stories. His real name was william Sydney Porter. He was bom in North Carolina in 1862. As a young boy he lived an exciting life. He did not go to school for very long, but he managed to teach himself everything he needed to know. When he was about 20 years old, Henry went to Texas, where he tried different jobs. He first worked on a newspaper, and then had a job in a bank When some money went missing from the bank, O. Henry was believed to have stolen it. Because of that, he was sent to prison. During the three years in prison, he learned to write short stories. After he got out of prison, he went to New York and continued writing. He wrote mostly about New York and the life of the poor there. People liked his stories, because simple as the tales were they would finish with a sudden change at the end to the reader's surprise.
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【单选题】C H 4 分子中 C原子采用的杂化方式是:
A.
sp 2
B.
不等性 sp 3
C.
等性 sp 3
D.
sp
【单选题】From this passage we can infer that ______.
A.
the school work was too difficult for Einstein
B.
Einstein did not receive college education
C.
A stupid boy can become a genius
D.
Einstein was careless with his school work
【单选题】_____ impressed me was the boy’s ability to deal with this kind of difficult physics problem.
A.
Which
B.
What
C.
It
D.
That
【单选题】在下列分子中,碳原子采用 sp 2 杂化方式的是:
A.
C 2 H 2
B.
CH 4
C.
C 2 H 4
D.
H 3 COH
【单选题】关于原子轨道的说法正确的是(  )
A.
凡是中心原子采取sp 3 杂化方式成键的分子其几何构型都是正四面体
B.
CH 4 分子中的sp 3 杂化轨道是由4个H原子的1s轨道和C原子的2p轨道混合起来而形成的
C.
sp 3 杂化轨道是由同一个原子中能量相近的s轨道和p轨道混合起来形成的一组能量相同的新轨道
D.
凡AB 3 型的共价化合物,其中心原子A均采用sp 3 杂化方式成键
【单选题】This exam was so difficult that only- student in our class passed it.
A.
a little
B.
little
C.
a few
D.
few
【判断题】红铜与青铜相比,硬度更小,不容易浇筑出大型器物。
A.
正确
B.
错误
【单选题】This mathematic problem was so difficult that no student and no teacher ______ able to solve it.
A.
were
B.
is
C.
was
D.
are
【单选题】_____ this report _____ in such a short time was quite a difficult exercise.
A.
Getting, done
B.
Get, done
C.
To get, to do
D.
Getting, to do
【判断题】红铜与青铜相比,硬度更小,不容易浇筑出大型器物。
A.
正确
B.
错误
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