CT扫描使影像诊断的范围扩大的根本原因是______ A．密度分辨力

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问题单项选择题

CT扫描使影像诊断的范围扩大的根本原因是______

A．密度分辨力高
B．显示的范围大
C．可获得冠状面、矢状面图像
D．患者接受X线少
E．空间分辨力高

答案

参考答案：A

填空题

用所给单词的正确形式填空。

1. My uncle is an (engine) in a big factory.

2. He (pick) up some garbage on his way to school yesterday morning.

3. He feels (surprise) that she has passed the exam.

4. She entered the room and turned on the (electricity) light.

5. I think buses make (little) pollution than cars.

6. He has been to (English) twice.

7. Listen! Who (sing) in the next room?

8. It's (danger) to cross the street when there is much traffic.

9. China is an (Asia) country.

10. This is my (two) e-mail.

单项选择题 A1型题

基因重排是（）

A.小缺失的片段倒转后仍插入原来位置

B.小缺失的片段不倒转插入原来位置

C.小缺失的片段倒转后插入其他位置

D.小缺失的片段不倒转插入其他位置

E.DNA断裂和重接引起的姐妹染色单体交换