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问题 单项选择题

各种注射法操作的共同点叙述不包括

A．均需要消毒皮肤
B．必须抽回血
C．注意选择部位
D．掌握进针角度
E．掌握进针深度

答案

参考答案：B

解析： 皮内注射不需抽回血。其余选项均为各注射法的共同之处。

改错题
短文改错。
     此题要求改正所给句子中的错误，按下列情况改正：该行多一个词：
     把多的词用斜线（\）划掉，在该行写出该词，也用斜线划掉。
     该行缺一个词：在缺词处加一个漏字符号（∧），在该行写出该加的词。
     该行错一个词：在错词下划一横线，在该行右边横线上写出改正后的词。
It is almost six years after I began to study
English. I'm glad to saying I'm getting on well
with it. But first I met with a lot of difficulties.
I couldn't get mostly of the sounds correct or 
remember the new word we had learned. In class I
couldn't catch the teacher. I almost lose heart
when my teacher encouraged me go on studying it.
" English is an useful tool in building our country.
You must study it well," he said. At the help of
my teacher, I had made up my mind to study hard.		1. _____
2. _____
3. _____
4. _____
5. _____
6. _____
7. _____
8. _____
9. _____
10. _____
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单项选择题

减数分裂过程中，姊妹染色单体的分离发生在（）？

A、后期Ⅰ

B、末期Ⅰ

C、后期Ⅱ

D、末期Ⅱ
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