breaks the law will be punished by law.

1. A.
   Whoever
2. B.
   Who
3. C.
   No matter who
4. D.
   A or C

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.                                                               

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  

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   

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.  

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" 

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"

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.                                                               

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  

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   

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.  

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" 

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"

全能干细胞能够让植物在整个生命周期中产生新的器官，是植物生长发育的源泉和信号调控中心，但是到目前为止，人们对于干细胞组织中心建立和维持的机制仍然知之甚少。中国科学院遗传与发育生物学研究所的李传友课题小组发现了一个在植物根尖干细胞维持中起重要作用的基因，这一研究结果于2010年11月3日作为封面文章发表于国际著名杂志The   Plant  Cell上。下列说法不正确的是（    ）

A．植物全能干细胞分化形成不同组织细胞是基因选择性表达的结果

B．植物全能干细胞有细胞周期，全能干细胞分化形成的导管细胞没有细胞周期

C．植物全能干细胞分化形成根、茎、叶的过程一般是不可逆的

D．植物全能干细胞分化形成根、茎、叶的过程体现了细胞的全能性

全能干细胞能够让植物在整个生命周期中产生新的器官，是植物生长发育的源泉和信号调控中心，但是到目前为止，人们对于干细胞组织中心建立和维持的机制仍然知之甚少。中国科学院遗传与发育生物学研究所的李传友课题小组发现了一个在植物根尖干细胞维持中起重要作用的基因，这一研究结果于2010年11月3日作为封面文章发表于国际著名杂志The   Plant  Cell上。下列说法不正确的是（    ）

A．植物全能干细胞分化形成不同组织细胞是基因选择性表达的结果

B．植物全能干细胞有细胞周期，全能干细胞分化形成的导管细胞没有细胞周期

C．植物全能干细胞分化形成根、茎、叶的过程一般是不可逆的

D．植物全能干细胞分化形成根、茎、叶的过程体现了细胞的全能性

全能干细胞能够让植物在整个生命周期中产生新的器官，是植物生长发育的源泉和信号调控中心，但是到目前为止，人们对于干细胞组织中心建立和维持的机制仍然知之甚少。中国科学院遗传与发育生物学研究所的李传友课题小组发现了一个在植物根尖干细胞维持中起重要作用的基因，这一研究结果于2010年11月3日作为封面文章发表于国际著名杂志The   Plant  Cell上。下列说法不正确的是                           （   ）

A．植物全能干细胞分化形成不同组织细胞是基因选择性表达的结果

B．植物全能干细胞有细胞周期，全能干细胞分化形成的导管细胞没有细胞周期

C．植物全能干细胞分化形成根、茎、叶的过程一般是不可逆的

D．植物全能干细胞分化形成根、茎、叶的过程体现了细胞的全能性

What a strange man! He loves his wife, but _____ he often beats her.

A. at a time B. at one time C. at times D. at the same time

--Peter is very clever and he studies hard as well．

---No ______be always wins first in the examinations.

A．doubt  B．question  C．wonder  D．problem

You'd better make a mark _____ you have any questions.

A. at which  B. at where  C. the place  D. where