关于子宫下段错误的是： A．由子宫峡部形成 B．非孕时长约1cm_爱下问搜题

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问题单项选择题

关于子宫下段错误的是：

A．由子宫峡部形成
B．非孕时长约1cm
C．于妊娠末期逐渐扩展为宫腔的一部分
D．可达7～10cm
E．可与子宫体形成生理缩复环

答案

参考答案：C

完形填空

We have no idea about  1 men first began to use salt. But we do know that it had been used in many different ways    2  the history.
For example, in many history books it is  3   that people who lived three thousand years ago 4 salted fish. Thousands of years ago in Egypt（埃及）, salt 5  keep the dead. It can keep the dead bodies  6 decay.（腐烂）
In the eighteenth century, a person who stole salt was   7  to have broken the   8 . if a person was caught stealing salt, he would be thrown into   9  . Books also record that in England about ten thousand people were put into prison during that century   10  stealing salt! In the year 1553, if a man took   11  than his share of salt, he would be thought to have broken the law and would be   12  punished(惩罚).
Salt was very 13  on the dinner table of a king. It was always put   14 the king when he sat down to eat. Then important visitors sat near the salt   15 less important visitors were given seats farther away from it.

B．was used to

小题12:A. serious B. bad C. terrible D seriously

小题14:A. in the front of B behind C. in front of D. before

单项选择题

有下列情况时，不准装药放炮，爆破地点附近20米内风流中瓦斯浓度达到（）%。

A、0.5

B、1

C、1.5

D、2