While writing a letter, _____. [ ] A. th

发布时间：2017-05-23 13:52 │ 来源：www.tikuol.com

题型：选择题

问题：

While writing a letter, _____. [ ]

A. the door bell rang

B. the door bell rings

C. I heard the door bell ring

D. I heard the door bell rings

考点：状语从句

题型：选择题

计算2x²•（-3x³）的结果是______．

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题型：选择题

阅读下面短文，根据所读内容在文后第1至第5小题的空格里填上适当的单词或短语。
注意：每空不超过3个单词。

Yang Zhenning ( 1922—)
& Li Zhengdao (1926—)
Yang Zhenning and Li Zhengdao both
studied at a university in Kunming. Later,
they both went to Chicago in America and
worked with a famous Italian-American
scientist.
In 1957, Yang Zhenning and Li Zhengdao
won the Nobel Prize for Physics for their
studies on the forces between particles (分子).
They were the first Chinese Nobel
Prize winners.

Ding Zhaozhong (1936—)
In 1976. Ding Zhaozhong received the Nobel
Prize for Physics for his discovery of a whole
new type of particle. He gave his speech at
the award (授奖) ceremony in Chinese.
Nobody had ever done that before.
Ding Zhaozhong Qnly started his formal (正规
的) education when he was 12! When he was
20, he decided to study in America. He
worked very hard and after university, he
became a well-known scientist.

Li Yuanzhe (1936—)
Li Yuanzhe won the Nobel Prize for
Chemistry for his work in 1986. At school.
Li was an excellent student who also took
part in sports and music. He also liked
reading. He read a book on Marie Curie,
which made him decide to be a scientist.

Cui Qi (1939—)
Cui Qi received the Nobel Prize for Physics in
1998. At school, Cui Qi's heroes were Yang
Zhenning and Li Zhengdao. When he finished
middle school, he went to study physics at
the University of Chicago just as they did,
and became a professor at Princeton University
in 1982.

Chinese Nobel Prize Winners

1_____	Nobel Prize	Year	Achievement
Yang Zhenning ＆ Li Zhengdao	Physics	1957	Studies on 2_____ between particles
Li Yuanzhe	3_____	1986	His work
Ding Zhaozhong	Ding Zhaozhong	4_____	Discovery of a whole new type of particle
Cui Qi	5_____	1998	Not mentioned

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按随证取穴原则，心肾不交型失眠用哪个穴位最合适（）

A.曲池

B.合谷

C.足三里

D.神门

E.阳陵泉

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在经营企业和加工企业不是同一家企业的情况下，应该在( )办理加工贸易合同备案。

A．经营企业所在地海关
B．加工企业所在地主管海关
C．海关总署
D．经营地和加工企业所在地海关均可

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乾隆写在北京颐和园铜牛上的铜牛铭字体是什么？

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