问题 选择题

下列有关说法正确的是

A.反应CO2(g)+C(s)=2CO(g)在高温下可自发进行,则该反应的△H> 0

B.工业上电解饱和食盐水时,以石墨作阴极,铁棒作阳极

C.常温下,0.1mol·L-1 CH3COOH溶液pH=1

D.常温下,在AgCl悬浊液中加入少量NaCl饱和溶液,c(Ag+)减小,Ksp(AgCl) 减小

答案

答案:A

题目分析:A.反应CO2(g)+C(s)=2CO(g)△H> 0,△S> 0故在高温下可自发进行,正确;B.工业上电解饱和食盐水时,以石墨作阴极,铁棒作阳极时会发生反应产生二价铁离子,错误;C.CH3COOH是弱酸不能完全电离,常温下,0.1mol·L-1 CH3COOH溶液pH大于1,错误;D.Ksp(AgCl) 只与温度有关,温度不变其值也不会改变,错误;正确答案为A。

单项选择题
阅读理解

                    

  Like most people, I’ve long understood that I’ll be judged by my occupation, that my profession is used by people to see how talented I am. Recently, however, I was disappointed to see that it also decides how I’m treated as a person.

  Last year I left a professional position as a small-town reporter and took a job waiting tables. As someone paid to serve food to people, I had customers say and do things to me I suppose they’d never say or do to the people they know. One night a man talking on his cell phone waved me away, then called me back with his finger a minute later, saying angrily that he was ready to order and asking where I’d been.

  I had waited tables during summers in college and was treated like a peon(勤杂工) by plenty of people. But at 19 years old, I believed I deserved inferior(低等的)treatment from professional adults. Besides, people responded to me differently after I told them I was in college. Customers would joke that one day I’d be sitting at their table, waiting to be served.

  Once I graduated I took a job at a community newspaper. From my first day, I heard a respectful tone from everyone who called me. I assumed this was the way the professional world worked--- politely and formally.

  I soon found out differently. I sat several feet away from a person in advertising department with a similar name. Our calls would often get mixed up and someone asking for Kristen would be transferred to Christie. The mistake was immediately clear. Perhaps it was because of money, but people used a tone with Kristen that they never used with me.

  It’s no secret that there’s a lot to put up with when waiting tables, and fortunately, much of it can be easily forgotten when you pocket the tips. The service industry exists to meet others’ needs. Still, it seemed that many of my customers didn’t get the difference between server and servant.

  I’m now applying to graduate school, which means someday I’ll return to a profession where people need to be nice to me in order to get what they want. I think I’ll take them to dinner first, and see how they treat someone whose job is to serve them.

  68. What makes the author disappointed?

  A. Professionals tend to look down upon workers.

  B. Talented people have to do the job waiting tables.

  C. One’s position is used to measure one’s intelligence.

  D. Occupation affects the way one is treated as a person.

  69. What does the author intend to say by the example in Paragraph 2?

  A. Waiting tables is a hard job.

  B. Some customers are difficult to deal with.

  C. The man making a phone call is absent-minded.

  D. Some customers show no respect to those who serve them.

  70. How did the author feel when waiting tables at the age of 19?

  A. She felt it unfair to be treated as a servant.

  B. She found it natural for professionals to treat her as inferior.

  C. She was embarrassed each time her customers joked with her.

  D. She felt badly hurt when her customers regarded her as a peon.

  71. The author says one day she’ll take her customers to dinner in order to _______.

  A. see what kind of person they are

  B. experience the feeling of being served

  C. share her working experience with her customers

  D. help them realize the difference between server and servant