高血压的动脉系统病变期，小动脉的病理改变是（） A.水肿 B.粥样硬化 C.间歇性痉

一个三位小数精确到百分位后约是0.48，这个小数最小是（    ），最大是（    ）。

当好党委的参谋和助手，公安机关应( )。

A．经常向党委和政府报告敌情、社情和社会治安情况

B．定期报告公安工作情况

C．向党委提出制定对策的参考性意见

D．在人民警察中下层进行经常性的党性教育

时态填空。

1. We _____ (make) a survy of the school in Beijing, and I found something new.

2. Car is more and more popular, you'd better _____ (learn) to drive.

3. Jordan _____ (be) born in 1975.

4. Tiger Woods started golfing when he _______ (be) ten months old.

5. It's important _______ (stay) healthy for everyone.

6. He is going to be an engineer when he _______ (grow) up.

7. It is the third time for Zidane _______ (win) "World Player of the Year 2003" award.

8. Toby _______ (win) a prize last term.

9. I think you can ask him _______ (help) you.

10. Keep quiet, please. They _______ (have) a meeting.

用药物治疗扩张型心肌病时应慎用下列哪种药物()

A．利尿剂

B．扩血管药物

C．血管紧张素转换酶抑制剂

D．钙拮抗剂

E．β受体阻滞剂

光驱的倍数越大( )。

A．数据传输越快

B．纠错能力越强

C．所能读取光盘的容量越大

D．播放VCD的效果越好