对于反应4A+B=2C,下列说法正确的是[ ] A.某温度下,化学反应速率无论是

题型:不定项选择题

问题:

对于反应4A+B=2C,下列说法正确的是[ ]

A.某温度下,化学反应速率无论是用A、B、C何种物质 来表示,其化学反应速率的数值相同

B.在其他条件不变的情况下,降低温度,一般化学反应速率降低

C.在其他条件不变的情况下,增大压强,单位体积内活化分子百分数一定增大,化学反应速率一定增大

D.若增大或减少A物质的量,化学反应速率一定会发生明显的变化

考点:影响化学反应速率的因素
题型:不定项选择题

直接保险人为转移已承保的部分或全部风险而向其他保险人购买的保险称为( )。

A.再保险

B.直接保险

C.投资型保险

D.商业保险

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— Are you glad to hear from her?
— Of course. ____, I dreamed about her several nights.

A. What's more
B. That is to say
C. In other words
D. Believe it or not
题型:不定项选择题

影响横向沟通的因素有()。

A.命令式沟通

B.员工知识水平的差异

C.员工性格差异

D.本位主义

题型:不定项选择题

当事人的合并,是指合同当事人与其他的民事主体合成一个民事主体。合并的形式有 ( )。

A.部分合并

B.总体合并

C.新设合并

D.吸收合并

E.临时合并

题型:不定项选择题

As the pace of life continues to increase, we are fast losing the art of relaxation. Once you are in the habit of rushing through lift, being on the go from morning till night, it is hard to slow down. But relaxation is essential for a healthy mind and body.                             

Stress is a natural part of everyday life and there is no way to avoid it. In fact, it is not the bad thing it is often supposed to be. A certain amount of stress is vital to provide motivation and give purpose to life. It is only when the stress gets out of control that it can lead to poor performance and ill health.                                               

The amount of stress a person can withstand depends very much on the individual. Some people are not afraid of stress, and such characters are obviously prime material for managerial responsibilities. Others lose heart at the first signs of unusual difficulties. When exposed to stress, in whatever form, we react both chemically and physically. In fact we make choice between "fight" or "flight" and in more primitive days the choice made the difference between life or death. The crises we meet today are unlikely to be so extreme, but however little the stress is, it involves the same response. It is when such a reaction lasts long, through continued exposure to stress, that health becomes endangered. Such serious conditions as high blood pressure and heart disease have established links with stress. Since we cannot remove stress from our lives (it would be unwise to do so even if we could), we need to find ways to deal with it.                                                              

66. People are finding less and less time for relaxing themselves because_____.                                                 

A. they do not know how to enjoy themselves                                       

B. they do not believe that relaxation is important for health      C. they are travelling fast all the time                                                    

D. they are becoming busier with their work  

67. According to the writer, the most important character for a good manager is his ________.   

A. not fearing stress                                                B. knowing the art of relaxation         

C. high sense of responsibility                                  D. having control over performance   

68. Which of the following statements is true?  

A. We can find some ways to avoid stress. 

B. Stress is always harmful to people. 

C. It is easy to change the habit of keeping oneself busy with work.  

D. Different people can withstand different amounts of stress.  

69. In Paragraph 3, "such a reaction" refers back to_______. 

A. "making a choice between 'flight' or 'fight'"                                                         

B. "reaction to stress both chemically and physically"                                                     

C. "responding to crises quickly"

D. "losing heart at the signs difficulties" 

70. In the last sentence of the passage, "do so " refers to ______.     

A. "expose ourselves to stress"                              

B. "find ways to deal with stress" 

C. "remove stress from our lives"                   

D. "established links between diseases and stress"

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