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问题 单项选择题

下列关于体素的叙述。正确的是

A．主要根据层厚大小

B．又称为像元

C．由长、宽组成决定

D．是CT扫描的最小体积单位

E．大小一般在0.1-1mm之间

答案

参考答案：D

改错题
短文改措。
     此题要求改正所给短文中的错误。对标有题号的每一行作出判断；
     如有错误（每行只有一个错误），则按下列情况改正：　　
     该行多一个词：把多余的词用斜线（\）划掉，在该行右边横线上写出该词，并也用斜线划掉。　　
     该行缺一个词：在缺词处加一个漏字符号（∧），在该行右边横线上写出该回的词。　　
     该行错一个词：在错的词下划一横线，在该行右边横线上写出改正的词。　　
     注意：原行没有错的不要改

They day before the speech contest(比赛) English teacher
talked to me. She said that she and my schoolmate all
wished me success, but it didn't matter that I would
win and not. When I was on the stage the next day, I felt so
nervous as I shook like a leaf. There were so many people 
present! Suddenly, I caught a sight of my English teacher in
the crowd. She was smiling but nodding at me. I remembered
her words and calm down. I did a good job and won the first
prize. Now my picture and the prize is hanging in the library.
Whenever I see them I will often think of my English teacher.

1. _____
2. _____
3. _____
4. _____
5. _____
6. _____
7. _____
8. _____                                                
9. _____
10. _____
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单项选择题

治疗慢性粒细胞性白血病，首选

A．二溴甘露醇

B．长春新碱

C．靛玉红

D．环磷酰胺

E．羟基脲
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