Imagine a world in which there was suddenly no emotion—a world in which human beings could feel no love or happiness, no terror or hate. Try to imagine the consequences of such a transformation. People might not be able to stay alive: knowing neither joy nor pleasure, anxiety nor fear, they would be as likely to repeat acts that hurt them as acts that were beneficial. They could not learn: they could not benefit from experience because this emotionless world would lack rewards and punishments. Society would soon disappear: people would be as likely to harm one another as to provide help and support. Human relationships would not exist: in a world without friends or enemies, there could be no marriage, affection among companions, or bonds among members of groups. Society's economic underpinnings would be destroyed: since earning $10 million would be no more pleasant than earning $10, there would be no incentive to work. In fact, there would be no incentives of any kind. For as we will see, incentives imply a capacity to enjoy them.
    In such a world, the chances that the human species would survive are next to zero, because emotions are the basic instrument of our survival and adaptation. Emotions structure the world for us in important ways. As individuals, we categorize objects on the basis of our emotions. True we consider the length, shape, size, or texture, but an objects physical aspects are less important than what it has done or can do to us—hurt us, surprise us, anger us or make us joyful. We also use categorizations colored by emotions in our families, communities, and overall society. Out of our emotional experiences with objects and events comes a social feeling of agreement that certain things and actions are 'good' and others are 'bad' and we apply these categories to every aspect of our social life—from what foods we eat and what clothes we wear to how we keep promises and which people our group will accept. In fact, society exploits our emotional reactions and attitudes, such as loyalty, morality, pride, shame, guilt, fear and greed, in order to maintain itself. It gives high rewards to individuals who perform important tasks such as surgery, makes heroes out of individuals for unusual or dangerous achievements such as flying fighter planes in a war, and uses the legal penal system to make people afraid to engage in antisocial acts.
单选题     The reason why people might not be able to stay alive in a world without emotion is that ______.
 
【正确答案】 D
【答案解析】 根据第一段第三句话“People might not be able to stay alive: knowing neither joy nor pleasure, anxiety nor fear, they would be as likely to repeat acts that hurt them as acts that were beneficial.”人们可能不会活下去，因为他们不知道开心，不知道焦虑，不知道害怕。他们很可能会重复对自己好的行为，也可能会重复对自己坏的行为。故答案是D，人不知道什么行为是好的，什么行为是坏的。
单选题     According to the passage, people's learning activities are possible because they ______.
 
【正确答案】 A
【答案解析】 根据第一段第四句话“They could not learn: they could not benefit from experience because this emotionless world would lack rewards and punishments.”人们不会学习。因为这个毫无感情的世界不会给予他们奖励或者惩罚，他们无法从学习过程中获利。故答案是A。
单选题     It can be inferred from the passage that the economic foundation of society is dependent on ______.
 
【正确答案】 B
【答案解析】 根据第一段倒数第三句话“Society's economic underpinnings would be destroyed: since earning $10 million would be no more pleasant than earning $10, there would be no incentive to work.”这个社会的经济基础将会遭到破坏：因为赚1千万同赚10块钱是没有差别的，人们也就没有工作的动力了。故答案是B，享受动力的能力。
单选题     Emotions are significant for man's survival and adaptation because ______.
 
【正确答案】 D
【答案解析】 根据第二段第一句话“In such a world, the chances that the human species would survive are next to zero, because emotions are the basic instrument of our survival and adaptation.”在这样的世界里，人类生存下来的几率为零，因为情感是我们生存适应的基础。
单选题     The emotional aspects of an object are more important than its physical aspects in that they ______.
 
【正确答案】 B
【答案解析】 根据第二段第一句话“In such a world, the chances that the human species would survive are next to zero, because emotions are the basic instrument of our survival and adaptation. Emotions structure the world for us in important ways.” 在这样的世界里，人类生存下来的几率为零，因为情感是我们生存适应的基础。所以答案是B，帮助我们适应周围的世界。