问题 填空题

我国的航空航天领域已经处于世界领先的水平,请回答下列问题:

(1)2008年9月27日,太空第一次留下了“中国人的脚印”. 我国研制的航天员舱外服为航天员成功进行太空行走提供了可靠的保证.航天员舱外服内含有与氢氧化钠性质相似的氢氧化锂(LiOH),它不可能具有的化学性质是 _________

A.与二氧化碳反应  

B.与硫酸铜溶液反应  

C.与盐酸反应    

D.与锌粒反应

(2)航天员进行太空漫步所穿着的舱外航天服中装配有氧气,此时氧气的主要作用是 _________

(3)“神州七号”载人飞船发射升空时,所用的燃料燃烧是将 _________ 能转化为热能.

(4)2011年我国首个火星探测器“萤火一号”将踏 * * 问火星的旅程.太阳能帆板是探测器的重要部件,其制作材料之一的高纯硅(Si)是用氢气与四氯化硅(SiCl4)在高温条件下反应生成硅和氯化氢,该反应的化学方程式为_________.该反应中硅元素的化合价_________(填“升高”或“降低”).

答案

(1)D;

(2)供给呼吸;

(3)化学能;

(4)SiCl4+2H2=Si+4HCl;+4

阅读理解

Many years ago, when I was fresh out of school and working in Denver, I was driving to my parents’ home in Missouri for Christmas. I stopped at a gas station about 50 miles from Oklahoma City, where I was planning to stop and visit a friend. While I was standing in line at the cash register I said hello to an older couple who were also paying for gas.

I took off, but had gone only a few miles when black smoke poured from the back of my car. I stopped and wondered what I should do. A car pulled up behind me. It was the couple I had spoken to at the gas station. They said they would take me to my friend’s. We chatted on the way into the city, and when I got out of the car, the husband gave me his business card.

I wrote him and his wife a thank-you note for helping me. Soon afterward, I received a Christmas present from them. Their note that came with it said that helping me had made their holiday meaningful.

Years later, I drove to a meeting in a nearby town in the morning. In late afternoon I returned to my car and found that I’d left the lights on all day, and the battery was dead. Then I noticed that the Friendly Ford dealership --- a shop selling cars --- was right next door. I walked over and found two salesmen in the show room.

“Just how friendly is Friendly Ford?” I asked and explained my trouble. They quickly drove a pickup truck to my car and started it. They would accept no payment, so when I got home, I wrote them a note to say thanks. I received a letter back from one of the salesmen. No one had ever taken the time to write him and say thank you, and it meant a lot, he said.

“Thank you”--- two powerful words. They’re easy to say and mean so much.

小题1:The author planned to stop at Oklahoma City ________.

A.to drop in on a friend

B.to see his parents

C.to pay at the cash register

D.to make a plan with his friend小题2:The words “took off” underlined in Paragraph 2 means “_________”.

A.moved off

B.turned off

C.put up

D.set up小题3:What happened when the author found smoke coming out of his car?

A.He had it pulled back to the gas station.

B.The couple sent him a business card

C.The couple offered to help him.

D.He called his friend for help.小题4:By telling his own experiences, the author tries to show _______.

A.how to write a thank-you letter

B.how to deal with car problem

C.the kind-heartedness of older people

D.the importance of expressing thanks.

单项选择题 案例分析题