试题与答案

当H2S浓度为（）时，就能致人死命？A、大于760mg/m3 B、大于700mg/m3

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题型：单项选择题

题目：

当H2S浓度为（）时，就能致人死命？

A、大于760mg/m3

B、大于700mg/m3

C、大于800mg/m3

答案：

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(16分) 阅读图文资料，完成下列要求。

 

 

 

空关着的残破房屋、人烟稀少的马路、几无船只的冷清码头，……一派萧条的景象，2013年3月以来，这座苟延残喘的城市——底特律——已经走到破产的边缘。

底特律兴起的18世纪，内河水运是美国最重要的运输方式。底特律和其所在的密歇根州，依靠优越的条件，一跃成为美国的重工业中心。1914年，由老福特首创的流水线作业，不仅带动了汽车产业的蓬勃兴盛，更使底特律因为通用、福特和克莱斯勒三大汽车公司总部齐聚于此而成为世界上最有名的“汽车之城”。

但是，随着本土普通轿车市场渐趋饱和，日、德车系国际竞争力日趋增强，雪上加霜的金融危机……图9示意美国部分地区。

(1)简述18世纪底特律成为重工业中心的区位优势。(8分)

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题型：单项选择题

Questions 16-20 are based on the following passage.
The income-tax deadline approaches and some taxpayers’ thoughts turn to it. Test time approaches and some students’ thoughts turn to it. Temptation appears and some spouses consider it. Nowadays, cheating is on the rise. "You want something you can’t get by behaving within the rules, and you want it badly enough, you’ll do it regardless of any guilt or regret, and you’re willing to run the risk of being caught. " That’s how Ladd Wheeler, psychology professor at the University of Rochester in New York, defines cheating.
Cheating represents the triumph of the "Brazen Rule" over the "Golden Rule", says Terry Pinkard, philosophy professor at Georgetown University in Washington D．C． "The Golden Rule says, Do unto others as you would have them do unto you.’The Brazen Rule says, Do unto others as they would do unto you if they were in your place. ’ " Many experts believe cheating is on the rise. "We’re seeing more of the kind of person who regards the world as a series of things to be manipulated． Whether to cheat depends on whether it’s in the person’s interest. " He does, however, see less cheating among the youngest students.
Richard Dienslbier, psychology professor at the University of Nebraska in Lincoln, believes that society’s attitudes account for much of the rise in cheating. "Twenty years ago, if a person cheated in college, society said:’That is extremely serious; you will be dropped for a semester if not kicked out permanently, ’ " he says. "Nowadays, at the University of Nebraska, for example, it is the stated policy of the College of Arts and Sciences that if a student cheats on an exam, the student must receive an’F’ on what he cheated on. That’s nothing. If you’re going to fail anyway, why not cheat "
Cheating is unethical, Pinkard says, whether it’s massive fraud or failure to tell a store cashier you were undercharged． "You’re treating other people merely as a means for your own ends. You’re using people in ways they would not consent to. The cheater says, ’ Let everybody else bear the burden, and I’ll reap the benefits. ’"
Cheaters usually try to justify their actions, says Rohert Hogan, chairman of the psychology department at the University of Tulsa in Oklahoma． "They never think it’s their fault. " Cheaters make justifications because they want to feel good about themselves, adds Wheeler. "They don’t want to label themselves as a cheater. Also, they may be anticipating the possibility of getting caught, so they work on their excuse ahead of time. " The most common justifications, psychologists say, include:
"I had to do it. "
"The test was unfair. "
"Everybody does it, and I have to cheat to get what’s rightfully mine. "
"The government wastes the money anyway. "
"My wife (or husband) doesn’t understand me, and we’ve grown apart. "
Cheating is most likely in situation where the stakes are high and the chances of getting caught are low, says social psychologist Lynn Kahle of the University of Oregon in Eugene. In his study, a group of freshmen were allowed to grade their own tests, while secret, pressure sensitive paper indicated who changed answers. To raise the pressure, students were given an extremely high scores as the "average" for the test and told that those who failed would go before an inquiring board of psychologists. About 16 percent of the male students changed answers; among the females, about 30 percent cheated．
Everybody cheats, a little, some psychologists say, while others insist that most people are basically honest and some wouldn’t cheat under any circumstances.
Despite the general rise in cheating, Pinkard sees some cause for hope: "I do find among younger students a much less tolerant attitude toward cheating. " Perhaps, he says, the upcoming generation is less spoiled than the "baby boom" students who preceded them—and therefore less self-centereD． "There seems to be a swing back in the culture. "

The purpose of this passage is to______.

A．convince the reader that cheating is immoral

B．discuss the varieties of and reasons for cheating

C．describe how cheaters cheat

D．suggest how to curtail cheating
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