题目

验证某有机物属于烃，应完成的实验内容是 （ ）A. 只测定它的C、H比B. 只要证明它完全燃烧后产物只有H2O和CO2C. 测定该试样的质量及试样完全燃烧后生成CO2和H2O的质量D. 只测定其燃烧产物中H2O与CO2的物质的量的比值 答案：【答案】C【解析】A．测定其燃烧产物中H2O和CO2物质的量的比值只能确定C、H元素的比值，不能确定是否含有O，故A错误；B．烃的含氧衍生物或烃燃烧都生成H2O和CO2，不能确定是否含有O，故B错误；C．测定该试样的质量及其试样完全燃烧后生成CO2和H2O的质量，可以确定一定质量的有机物中含有C、H元素的Men and women are still treated unequally in the workplace. Women continue to earn less, on average, for the same performance. Research has shown that both conscious(有意识的) and subconscious biases (偏见) contribute to this problem. But we’ve discovered another source of inequality: Women often don’t get what they want and deserve because they don’t ask for it. In three separate studies, we found that men are more likely than women to negotiate for what they want.The first study found that the starting salaries of male MBAs who had recently graduated from Carnegie Mellon were 7.6%, or almost $4,000, higher on average than those of female MBAs from the same program. That’s because most of the women had simply accepted the employer’s salary offer; in fact, only 7% had attempted to negotiate. But 57% of their male counterparts--or eight times as many men as women—had asked for more. Another study tested this gender difference in the lab. Subjects were told that they would be observed playing a word game and that they would be paid between $3 and $10 for playing. After each subject completed the task, an experimenter thanked the participant and said, “Here’s $3. Is $3 OK?” For the men, it was not OK, and they said so. Their requests for more money are nine times as many as the women’s. The largest of the three studies surveyed several hundred people over the Internet, asking them about the most recent negotiations they’d attempted or started and when they expected to negotiate next. The study showed that men place themselves in negotiation situations much more often than women do. There are several reasons accounting for the phenomenon. First, women often are taught from an early age not to promote their own interests and to focus instead on the needs of others. The messages girls receive—from parents, teachers, other children, the media, and society in general—can be so powerful that when they grow up they may not realize that they’ve made this behavior part of them, or they may realize it but not understand how it affects their willingness to negotiate. Women tend to think that they will be recognized and rewarded for working hard and doing a good job. Unlike men, they haven’t been taught that they can ask for more. 小题1:According to this passage, what causes the inequality in the workplace?A．social biasB．women’s poorer working abilityC．women’s worse academic backgroundD．women’s less negotiating小题2:Which can be the result of the following survey, according to Para 4? When do you expect to negotiate next?小题3:Which of the following statements is NOT true?A．Women are more likely to accept the employer’s salary offer.B．Men tend to ask for more money than woman.C．Women care more about other’s interest instead of themselves’.D．Men believe that the better they work, the better they’re paid.小题4:What will be discussed in the following paragraph?A．The suggestions given to women.B．The warnings to men.C．Another reason for women’s not asking.D．Another reason for men’s asking.