单选题 Thirty-two people watched kitty Genovese being killed right beneath their windows. She was their neighbor. Yet none of the 32 helped her. Not one even called the police. Was this in gunman cruelty? Was it lack of feeling about one's fellow man ?
"Not so," say scientists John Barley and Bib Fatane. These men went beyond the headlines to probe the reasons why people didn't act. They found that a person has to go through two steps before he can help. First he has to notice that is an emergency.
Suppose you see a middle-aged man fall to the side-walk, is he having a heart attack? Is he in a coma from diabetes ? Or is he about to sleep off a drank?
Is the smoke coming into the room from a leak in the air conditioning? Is it "steam pipes", or is it really smoke from a fire? It's not always easy to tell if you are faced with a real emergency.
Second, and more important, the person faced with an emergency must feel personally responsible. He must feel that he must help, or the person won't get the help he needs.
The researchers found that a lot depends on how many people are around. They had college students in to be "tested." Some came alone. Some came with one or two others. And some came in large groups. The receptionist started them off on the "tests." Then she went into the next room. A curtain divided the "testing room" and the room into which she went.
Soon the students heard a scream, the noise of file cabinets filling and cry for help. All of this had been pm-recorded on a tape-recorder.
Eight out of ten of the students taking the test alone acted to help. Of the students in pairs, only two out of the ten helped. Of the students in group, none helped.
In other words, in a group, Americans often fail to act. They feel that others will act. They, themselves, needn't. They do not feel any direct responsibility.
Are people bothered by situation where people are in trouble? Yes, scientists found that the people were emotional, they sweated, they had trembling hands. They felt that other person's trouble. But they did not act. They were in a group. Their actions were shaped by the actions of those they were with.

单选题 The purpose of the passage is______.
【正确答案】 B
【答案解析】[注释] 主旨题。从第三段和第五段最后一句话可知,本文主要讲述了人们在何时才会去提供帮助。一是在他认为确实有紧急情况出现;二是只有自己一个人才可以提供帮助才会帮助别人,因而选B。
单选题 Which of the following is not tree?
【正确答案】 C
【答案解析】[注释] 因为文章并未提到,人们在给他人提供帮助时,并不需要对他人的安全负全部责任。
单选题 The researchers have conducted an experiment to prove that people will act in emergencies when______.
【正确答案】 C
【答案解析】[注释] 推断题。从第七段可知,当只有一个人出现在紧急状况周围时,他帮助的可能性最大,是百分之八十。
单选题 The main mason why people fail to act when they stay together is that
【正确答案】 D
【答案解析】[注释] 推断题。从第8段“Americans often fail to act…They do not feel any direct responsibility”可推知D为正确答案。
单选题 The author suggests that______.
【正确答案】 A
【答案解析】[注释] 归纳题。以最后一段可知作者认为当人们面临紧急状况,而没有援之以手时,并不是他们无心提供帮助,而是他的行为被周围的人极大地影响着,因而应选A。