问题 单项选择题

Passage Four

Before the summer of 2000, the 54 year old John Haughom could accomplish just about any thing at work. "I could move mountains if I put my mind to it."he says of those days. But that summer Haughom found he couldn’t move them any more. On the phone with his wife one morn ing, Haughom broke down. A couple of days later Haughom checked himself in for a three-week stay at the Professional Renewal Center, an in-patient clinic 30 miles outside Kansas City that helps him deal with stress.
Haughom is far from alone. A host of new studies and plenty of anecdotal evidence show that stress in the workplace is skyrocketing. Whatever the cause, stress levels are at record highs. The statistics are startling. According to a new study by the federal government’s Nation al Institute for Occupational Safety and Health, more than half the working people in the U.S. view job stress as a major problem in their lives. This year the European Community officially dubbed stress the second-biggest occupational-health problem facing the continent.
Ten years ago experts warned that stress was out of control, in part because of a shaky economy. What’s notable about today’s wave of stressed-out workers is that it rises all the way to the top. Lack of control is generally considered one of the biggest job stressors, so it used to be thought that middle managers carried the brunt: sandwiched between the top and the bottom, they end up with little authority. Powerful chief executive officers (CEOs) were seen as the least threatened by stress. But in today’s tough economy, top executives don’t have as much control as they used to. "Stress is just part of the job, fortunately or unfortunately, stress’is part of our character building," Lebenthal says. "But I think I don’t need any more character building. What I need is a vacation."
But if you think that going on vacation is hard—and studies show that 85%of corporate executives don’t use all the time off they’re entitled to. Being able to handle stress is perhaps the most basic of job expectations. So among the corporate elite, succumbing to it is considered a shameful weakness. Stress has become the last affliction that people won’t dare admit to. Most senior executives who are undergoing treatment for stress—and even many who aren’t—refused to talk on the record about the topic."Nothing good can come out of having your name in a story like this," one CEO said through his therapist.

The CEO’s statement in the last sentence of this passage implies that

A.stress has become the last taboo that people won’t dare admit to

B.succumbing to stress is considered a shameful weakness

C.corporate elite have no enough courage to admit to stress

D.being able to handle stress is the most basic of job expectations

答案

参考答案:A

解析:推断题。文章最后一段指出,在公司的掌权人物当中,屈从于压力被认为是丢脸的缺点。大多数正治疗压力疾病的高级经理们不愿意让人把他们对这一话题的谈话记录在案。一位总经理通过他的治疗专家说:“让你的名字像这样记录在案没有任何好处。”这位总经理的话暗示了压力成了人们最后一个不敢承认的禁忌。所以,正确答案是A。B是文章指明的,而不是暗示。C“公司经理没有勇气承认他们的压力”并不是暗示,也说明不了什么问题。从这位总经理的话中,我们无法推断出D。

填空题

研究化学反应原理对生产生活很有意义,请用化学反应原理的相关知识回答下列问题:

(1)如图,用铅蓄电池电解甲、乙两电解池中的溶液。已知铅蓄电池的总反应为Pb(s)+PbO2(s)+2H2SO4(aq)2PbSO4(s) +2H2O(l)。电解一段时间后,向c极和d极附近分别滴加酚酞试剂,c极附近溶液变红,下列说法正确的是____________(填写序号)。

A.d极为阴极

B.若利用甲池精炼铜,b极应为粗铜

C.放电时铅蓄电池负极的电极反应式为PbO2(s)+4H+(aq)+ SO42-(aq)+4e-=PbSO4(s)+2H2O(l)

D.若四个电极材料均为石墨,当析出6.4gCu时,两池中 * * 生气体3.36L(标准状况下)

(2)某二元酸H2A在水中的电离方程式是H2A=H++ HA-:HA-H++A2-

①Na2A溶液显_______(填“酸性”“中性”或“碱性”),理由是________________(用离子方程式表示);

②已知0.1mol/L的NaHA溶液的pH=2,则0.1mol/L 的H2A溶液中氢离子的物质的量浓度可能____________(填“大于” “小于”或“等于”)0.11mol/L,理由是________________

(3)二甲醚是一种重要的清洁燃料,利用水煤气合成二甲醚的三步反应如下:

①2H2(g)+CO(g)CH3OH(g) △H=-90.8kJ/mol

②2CH3OH(g)CH3OCH3(g)+H2O(g) △H=-23.5kJ/mol

③CO(g)+H2O(g)CO2(g)+H2(g) △H=-41.3kJ/mol

写出水煤气直接合成二甲醚同时生成CO2的热化学反应方程式:___________________。

(4)SO2是硫酸生产中的重要中间产物,也是空气污染的主要原因之一,其被氧化生成SO3的反应为2SO2(g)+O2(g)2SO3(g)。在一定温度下,将0.23molSO2和0.11molO2通入容积为1L的密闭容器中发生反应,达到平衡后得到0.12molSO3,则反应的平衡常数K=__________。若温度不变,再通入0.50molO2后重新达到平衡,则SO3的体积分数将__________(填“增大”“不变”或“减小”)。

单项选择题