问题 单项选择题

下列哪一种材料可以直接铺置在涂膜屋面防水层上作保护层()

A. 水泥砂浆

B.水泥花砖

C. 蛭石

D.细石混凝土

答案

参考答案:C

解析:

《屋面工程技术规范》(GB 50207—1994)规定,5.3.7涂膜防水屋面应设置保护层。保护层材料可采用细砂、云母、蛭石、浅色涂料、水泥砂浆或块材等。采用水泥砂浆或块材时,应在涂膜与保护层之间设置隔离层。水泥砂浆保护层厚度不宜小于20mm。

完形填空

Barefoot and dirty,the girl just sat and watched the people go by.She never tried to speak.Many people passed,but never did one person stop.

The next day I decided to go back to the park,curious to see if the little girl would still be there.Right in the very spot as she was yesterday,she sat with the saddest look in her eyes.

Today I was to make my own move and walk over to the little girl.As we all know,a park full of strange people is not a place for young children to play alone.

As I began walking towards her,I could see the back of the little girl’s dress indicated a deformity(畸形).I smiled to let her know it was okay,I was there to help,to talk.I sat down beside her and opened with a simple “Hello”.I smiled and she shyly smiled back.We talked until darkness fell and the park was completely empty.I asked the girl why she was so sad.The little girl looked at me and with a sad face said,“Because I’m different.”

I immediately said “That you are!” and smiled.The little girl acted even sadder.She said,“I know.” She looked at me and smiled.Slowly she stood to her feet,and said,“Really?”

“Yes,dear,you’re like a little guardian angel sent to watch over all those people walking by.” She nodded her head “yes” and smiled,and with that she spread her wings and said with a twinkle in her eye,“I am.I’m your guardian angel.”

I was speechless,sure I was seeing things.She said,“For once you thought of someone other than yourself,my job here is done.”

Immediately I stood to my feet and said,“Wait,so why did no one stop to help an angel!?” She looked at me and smiled,“You’re the only one who could see me,and you believe it in your heart.”…and she was gone.

And with that my life changed dramatically.So,when you think you’re all you have,remember,your angel is always watching over you.Mine is!

小题1:People just passed by the girl because _______.

A.they pretended not to see her

B.she pretended to be poor

C.they never thought of helping her

D.they knew the author would help her小题2:Which word can’t be used to describe the author?

A.Considerate.

B.Patient.

C.Helpful.

D.Powerful.小题3:Why was the author speechless?

A.He was shocked.

B.He didn’t manage to help the girl.

C.He thought he was cheated.

D.He was in despair.小题4:Which of the following statements is TRUE?

A.The author smiled because he saw the girl was shy.

B.The author had known that the girl was a real angel.

C.The author believed that an angel was always watching him.

D.The author decided to go back to the park because he was sure that the little girl would be there.小题5:What does “You’re all you have” mean?

A.You are ugly.

B.You are alone.

C.You are strong.

D.You are rich.

单项选择题