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问题 选择题

下列各原子或离子的电子排布式错误的是（  ）。

A．C　1s22s22p2

B．O2－　1s22s22p6

C．Cr 1s22s22p63s23p63d44s2

D．Al3＋　1s22s22p6

答案

答案：C

本题C选项铬原子的电子排布式违反了洪特规则的特例，正确排布为：1s22s22p63s23p63d54s1。

完形填空

阅读下列短文，从每题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项

We have no idea about       men first began to use salt. But we do know that it had been used in many different ways _____ the history.

For example, in many history books it is ____ that people who lived three thousand years ago ____salted fish. Thousands of years ago in Egypt（埃及）, salt ____ keep the dead. It can keep the dead bodies ____ decay.（腐烂）

In the eighteenth century, a person who stole salt was ____ to have broken the ____. if a person was caught stealing salt, he would be thrown into ____. Books also record that in England about ten thousand people were put into prison during that century ____ stealing salt! In the year 1553, if a man took ____ than his share of salt, he would be thought to have broken the law and would be ____ punished(惩罚).

Salt was very ____ on the dinner table of a king. It was always put ____ the king when he sat down to eat. Then important visitors sat near the salt _____ less important visitors were given seats farther away from it.

小题1:

A．when

B．where

C．what

D．which

小题2:

A．throughout

B．thought

C．though

D．although

小题3:

A．say

B．reported

C．recorded

D．reading

小题4:

A．eat

B．ate

C．eating

D．have eaten

小题5:

A．used to

B．was used to

C．was used

D．used

小题6:

A．off

B．from

C．on

D．out

小题7:

A．think

B．consider

C．thoughtful

D．thought

小题8:

A．law

B．glass

C．computer

D．time

小题9:

A．pool

B．hill

C．prison

D．river

小题10:

A．because

B．because of

C．by

D．as

小题11:

A．more

B．less

C．fewer

D．most

小题12:

A．serious

B．bad

C．terrible

D．seriously

小题13:

A．important

B．necessary

C．clever

D．cheerful

小题14:

A．in the front of

B．behind

C．in front of

D．before

小题15:

A．when

B．as

C．however

D．while
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单项选择题

过滤王软件最多监控多少客户端?（）

A、100

B、200

C、300

D、400
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