出铁次数是怎样确定的？

用所给动词的适当形式填空，完成对话。

A: I'm not feeling well. I ___1___ ___2___(get) a cold.

B: ___3___ you ___4___ (be) to the hospital yet?

A: Yes, I ___5___ (go) to see Doctor Li this morning and he ___6___ (give) me some medicine.

B: ___7___ you ___8___(take) the medicine?

A: Yes, I ___9___(take) it just a moment ago.

B: Mr Li is a good doctor. I think you'll ___10 __(be) all right soon.

A: I hope so. By the way, where is our teacher? I have to ask for a sick leave.

B: She ___11___ ___12___(go) to the office.

某同学在平静状态时, 胸围长度为82cm, 尽力吸气的胸围长度为92cm, 尽力呼气的胸围长度为80cm, 他的胸围差为

A．170cm

B．158cm

C．10cm

D．12cm

什么是保安服务公司？

对未来一定时期工作作出打算和安排的公文文种是（）

A、简报

B、总结

C、调查报告

D、计划

母种