试题与答案

作为现行PC机的高速外围设备使用的总线是 ______。

题型:填空题

题目:

作为现行PC机的高速外围设备使用的总线是 ______。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D解析:直接读图,对比各年增加值的增幅。由于各年工业增加值数据庞大,直接计算费时费力,可采用目测并辅助直尺测量,快速判断增加最多的年份为2011年。如果逐一计算验证,用后一年工业增加值减去前得...

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题型:阅读理解

On June 21, 1982, Prince (王子) William, the future King of England, was born. Since then, he has won all the hearts of the public.

When he was very small, he got a number of nicknames (绰号):King Tot, Willys, Billy, and William the Terrible!He was often found climbing into wastebaskets, trying to flush (冲刷) Dad’s shoes down the toilet (厕所) and pressing buttons, which often made alarm ring!

Prince William has a lot of rules to follow:no drinking in public, no smoking or taking drugs, no kissing girls in public. William was especially close to Diana. However, he has been brave beyond his years since his mother’s sudden death because of the car accident.

Prince William’s fans are growing in number every day. He got more than 12, 000 fan letters a week. When he made a trip to Canada, thousands of girls went frenetic and screamed, “William, will you marry me?” His favorite drink is coke and his favorite foods are burgers, fries, pizza, and chocolate. William also loves to search the World Wide Web. So next time when you’re online, you might be chatting with the future King of England.

Want to write to him? Here it is:

HRH Prince William             

Kensington Palace  Kensington, London W8 4PN  Great Britain

小题1:William’s mother died when he was_____.     .

A. 13                   B. 20                C. 19                  D. 15

小题2:What does the underlined word “frenetic” mean?  

A. Angry.               B.Excited.           C. Stupid.                D. Comfortable.

小题3:Which of the following is NOT TRUE according to the passage?

A. Prince William loves his mother very much.   

B. Prince William likes western food.

C. Prince William has two brothers.    

D. Prince William loves to use the computer.

小题4:Where can you probably see the article?

A. In a magazine       B. In a textbook      C. In a sports report   D. On TV

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题型:填空题

(一)实验室用Na2CO3·10H2O配制500ml 0.10mol·L-1的Na2CO3溶液,填空并请回答下列问题:

(1)根据实验要求填表:

应量取Na2CO3·10H2O的质量/g应选用容量瓶的规格/mL除容量瓶外还需要的其它玻璃仪器
   
 

(2)配制时,其正确的操作顺序是(用字母表示,每个字母只能用一次)         

A.用适量水洗涤烧杯2—3次,洗涤液均注入容量瓶中,振荡。

B.用托盘天平准确称量所需Na2CO3·10H2O的质量,倒入烧杯中,再加入适量水,用玻璃棒慢慢搅动,使其溶解(需要时可加热)。

C.将已冷却的溶液沿玻璃棒注入容量瓶中

D.将容量瓶盖紧,振荡,摇匀

E.改用胶头滴管加水,使溶液凹面恰好与刻度相切

F.继续往容量瓶内小心加水,直到液面接近刻度1—2cm处

(3)若出现如下情况,对所配溶液浓度将有何影响(填“偏高”、“偏低”或“无影响”)?若没有进行A操作              ;若加蒸馏水时不慎超过了刻度              ;若定容时俯视刻度线                   

(二)喷泉实验是一种常见的自然现象,其产生原因是存在压强差。试根据下图,回答下列问题:

(1)在图A的烧瓶中充满干燥气体,胶头滴管及烧杯中分别盛有液体。下列组合中不可能形成喷泉的是(     )。    

A.HCl和HO         B.Cl2和NaOH溶液 

C.HCl和汽油         D.CO和NaOH溶液

(2)在图B的锥形瓶中,分别加入足量的下列物质,反应后可能产生喷 泉的是(    )

A.Cu与稀盐酸        B.NaHCO与NaOH溶液

C.CaCO与稀硫酸      D.NH4HCO与稀盐酸

(3)在图B的锥形瓶外放一水槽,锥形瓶中加入酒精,水槽中加入冷水后,再加入足量的下列物质,结果也产生了喷泉。水槽中加入的物质不可能是(    )。

A.浓硫酸    B.生石灰    C.硝酸铵    D.烧碱

(4)比较图A和图B两套装置,以产生喷泉的原理来分析,图A是_______上部烧瓶内压强;城市中常见的人造喷泉及火山爆发的原理与上述________(填图A或图B)装置的原理相似。

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