下列命题中真命题是（） A．同旁内角相等，两直线平行 B_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

下列命题中真命题是（　　）

A．同旁内角相等，两直线平行

B．两锐角之和为钝角

C．到角的两边距离相等的点在这个角的平分线上

D．直角三角形斜边上的中线等于斜边的一半

答案

A、因为同旁内角互补，两直线平行，故本选项错误；

B、两锐角之和不一定为钝角，例如25°+35°=60°仍为锐角，故本选项错误；

C、到角的两边距离相等的点不一定在这个角的平分线上，故本选项错误；

D、直角三角形斜边上的中线等于斜边的一半，故本选项正确．

故选D．

填空题

用所给单词的适当形式填空。

1. If I (have) one million dollars, I would give it to the hospital.

2. About millions of sheep (keep) in that country.

3. My brother always asks me (take) him to the net bar in the city.

4. If I _ (be) you. I would give him some food, not money.

5. You'd better (take) a long walk with your friends if you are still nervous.

6. Don't stay up too late before (go) to bed.

7. I want to know if everyone else (bring) a present to our teacher.

8. If your father were there last night, he ______ (help) us finish the work.

9. Everyone laughs at my old sweater, so I stop_____ (wear) it.

10. If you are still nervous, ___ _ (take)a long walk can be helpful to you.

多项选择题

在病史调查表中，病史应由（）同时签名，并填上日期。

A.家属

B.献血者

C.单位

D.记录者