If fewer cash crops were grown, more food could be produced and there would be less or no starvation．

答案：
解析：

假如少種一些經(jīng)濟(jì)作物，就可能生產(chǎn)更多的糧食，就會(huì)減少或杜絕饑餓現(xiàn)象。


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Here's a new warning from health experts: Sitting is deadly. Scientists are increasingly warning that sitting for prolonged periods — even if you also exercise regularly — could be   1  for your health. And it doesn't matter where the sitting takes place — at the office, at school, in the car or before a computer or TV — just the overall number of hours it   2   .

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(   ) 1. A. bad                    B. good                C. mean                       D. dead

(   ) 2. A. does                  B. occurs              C. matches                   D. dies

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(   ) 4. A. thrown                      B. caught              C. seen                        D. published

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(   ) 6. A. commending      B. mending           C. recommending         D. communicating

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(   ) 8. A. harmful             B. careful             C. wonderful         D. skillful

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(   ) 16. A. effects              B. prefects            C. affects              D. offers

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When an emergency situation occurs, observers are more likely to take action if there are few or no other witnesses. This phenomenon is referred to as the bystander （旁觀者）effect．

The bystander effect is also called the Genovese effect, which is named after Catherine “Kitty" Genovese, a young woman who was cruelly murdered on March 13, 1964. Early in the morning, 28-year-old Genovese was returning home from work. As she approached her apartment entrance, she was attacked and stabbed（刺）by a man later identified as Winston Moseley. Despite Genovese's repeated cries for help, none of people in the nearby apartment building who heard her cries called police for help. The attack first began at 3:20, but it was not until 3:50 that someone first contacted police．

Many psychologists were set thinking by the incident, as well as most Americans. As the conclusion, the bystander effect came out and later proved by a series of studies and experiments.

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1.. The bystander effect is also called the Genovese effect because   a woman surnamed Genovese．  

      A. it somehow caused the murder of   

      B. its discovery resulted from the murder of

      C. it was actually discovered by     

      D. it always makes people think of

2.. Genovese was murdered          .     ．  

      A. while she was going out                B. in her apartment

      C. halfway home                       D. near her apartment

3.. Which can NOT have been a possible reason for the neighbors NOT offering Genovese help?

A. They believed in the bystander effect．               

      B. They thought someone else might help her．

      C. They didn't think they should help．  

      D. They didn't think she needed help．

4.. Before deciding to offer help, observers may           , according to the psychologists． 

      A. wait for sort of a signal     

      B. hesitate and estimate the risk of getting hurt

      C. want to be sure it's appropriate to react 

      D. wonder if the victim is worth helping

5.. The article seems to suggest that, if there had been         observers, Genovese might not have been murdered．   

    A. no              B. fewer                C. more             D. braver

 

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