企业投资项目的可行性研究应具体要求包括( )。A．客观性、公正性、合理性、科学性B

苯的泄漏会造成严重的危险，以下说法有科学性错误的是(　　)。

A．由于大量苯溶入水中，渗入土壤，会对周边农田、水源造成严重的污染

B．由于苯是一种易挥发、易燃的物质，周围地区如果有火星就可能引起爆炸

C．可以采取抽吸水渠中上层液体的办法，达到部分清除泄漏物的目的

D．由于苯有毒，所有工作人员在处理事故时，都要做相关防护措施

（）是金融工具在必要时迅速转变为现金而不致遭受损失的能力。

A.期限性

B.流动性

C.风险性

D.收益性

项目总承包模式具有的优点是（）。

A.合同关系简单

B.合同管理难度小

C.合同价格低

D.有利于质量控制

The $11 billion self-help industry is built on the idea that you should turn negative thoughts like “I never do anything right” into positive ones like “I can succeed.” But was positive thinking advocate Norman Vincent Peale right? Is there power in positive thinking?

　　Researchers in Canada just published a study in the journal Psychological Science that says trying to get people to think more positively can actually have the opposite effect: it can simply highlight how unhappy they are.

　　The study’s authors, Joanne Wood and John Lee of the University of Waterloo and Elaine Perunovic of the University of New Brunswick, begin by citing older research showing that when people get feedback which they believe is very positive, they actually feel worse, not better. If you tell your stupid friend that he has the potential of an Einstein, you’re just underlining his faults. In one 1990s experiment, a team including psychologist Joel Cooper of Princeton asked participants to write essays opposing funding for the disabled. When the essayists were later praised for their sympathy, they felt even worse about what they had written.

　　In this experiment, Wood, Lee and Perunovic measured 68 students’ self-esteem. The participants were then asked to write down their thoughts and feelings for four minutes. Every 15 seconds, one group of students heard a bell. When it rang, they were supposed to tell themselves, “I am lovable.”

　　Those with low self-esteem didn’t feel better after the forced self-affirmation. In fact, their moods turned significantly darker than those of members of the control group, who weren’t urged to think positive thoughts.

　　The paper provides support for newer forms of psychotherapy (心理治疗) that urge people to accept their negative thoughts and feelings rather than fight them. In the fighting, we not only often fail but can make things worse. Meditation techniques, in contrast, can teach people to put their shortcomings into a larger, more realistic perspective. Call it the power of negative thinking.

小题1:What do we learn from the first paragraph about the self-help industry?

A．It has produced positive results.

B．It is a highly profitable industry.

C．It is based on the concept of positive thinking.

D．It was established by Norman Vincent Peale.小题2:What does the word “underline” mean (Line 4, Para. 3)?

A．point out

B．lay emphasis on

C．pay no attention to

D．take for granted小题3: Which of the following is TRUE about the Canadian researchers’ study?

A．Encouraging positive thinking many do more good than harm.

B．Self-affirmation can bring a positive change to one’s mood.

C．There can be no simple therapy for psychological problems.

D．Forcing a person to think positive thoughts may lower their self-esteem.小题4:What do we learn from the last paragraph?

A．Meditation may prove to be a good form of psychotherapy.

B．People can avoid making mistakes through meditation.

C．Different people tend to have different ways of thinking.

D．The effects of positive thinking vary from person to person.

啤酒厂常见的微生物污染种类有野生酵母和细菌，防治措施有清洗干净、彻底消毒。