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 object’s 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 uses 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.1. The reason why people might not be able to stay alive in a world without emotion is that _______.
A. they would not be able to tell the texture of objects
B. they would not know what was beneficial and what was harmful to them
C. they would not be happy with a life without love
D. they would do things that hurt each other’s feelings
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With only about 1,000 pandas left in the world, China is desperately trying to clone the animal and save the endangered species. That’s a move similar to what a Texas A&M University researcher has been undertaking for the past five years in a project called “Noah’s Ark.”Dr. Duane Kraemer, a professor in Texas A&M’s College of Veterinary Medicine and a pioneer in embryo (胚胎) transfer work and related procedures, says he salutes the Chinese effort and “I wish them all the best success possible. It’s a worthwhile project, certainly not an easy one, and it’s very much like what we’re attempting here at Texas A&M — to save animals from extinction.”Noah’s Ark is aimed at collecting eggs, embryos, semen and DNA of endangered animals and storing them in liquid nitrogen. If certain species should become extinct, Kraemer says there would be enough of the basic building blocks to reintroduce the species in the future.It is estimated that as many as 2,000 species of mammals, birds and reptiles will become extinct over the next 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.This week, Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal.The entire procedure could take from three to five years to complete. “The nuclear transfer of one species to another is not easy, and the lack of available panda eggs could be a major problem.” Kraemer believes. “They will probably have to do several hundred transfers to result in one pregnancy. It takes a long time and it’s difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort.” adds Kraemer, who is one of the leaders of the Missyplicity Project at Texas A&M, the first-ever attempt at cloning a dog.“They are trying to do something that’s never been done, and this is very similar to our work in Noah’s Ark. We’re both trying to save animals that face extinction. I certainly applaud their effort and there’s a lot we can learn from what they are attempting to do. It’s a research that is very much needed.”6. The aim of “Noah’s Ark” project is to ________.
A. implant embryo into a host animal
B. salute the Chinese efforts in saving pandas
C. save endangered animals from extinction
D. introduce cells from a dead female panda into the egg cells of a Japanese white rabbit
The word “groundbreaking” can be interpreted as ________.
A. especially new
B. pioneering
C. damaging
D. trouble-making
分压式偏置单管放大电路的发射极旁路电容因损坏而断开,则该电路的电压放大倍数将()。
A. 大
B. 减小
C. 不变
工作在放大区的某三极管,如果当IB从12uA增大到22uA时,IC从1mA变为2mA时,那么它的β约为()。
A. 90
B. 100
C. 110