阅读难点关键句200句（二）

　　170. Psychologists take opposing views of how external rewards, from warm praise to cold cash, affect motivation and creativity.

　　171. But it’s easy to kill creativity by giving rewards for poor performance or creating too much anticipation for rewards.

　　172. The fridge’s effect upon the environment has been evident, while its contribution to human happiness has been insignificant.

　　173. It may then take us a long time to render it intelligent by loading in the right software or by altering the architecture but that too will happen.

　　174. As the intelligence of robots increase to match that of humans and as their cost declines through economies of scale we may use them to expand our frontiers.

　　175. Further ahead, by a combination of the great wealth this new age will bring and the technology it will provide, the construction of a vast, man-created world in space, home to thousands or millions of people, will be within our power.

　　176. Later, people tried to lift a building off its foundation, and insert rubber and steel between the building and its foundation to reduce the impact of ground vibrations.

　　177. If they are not sincere and do not practise what they preach, their children may grow confused and emotionally insecure when they grow old enough to think for themselves, and realize they have been to some extent fooled.

　　178. For all these reasons, reading newspapers efficiently, which means getting what you want from them without missing things you need but without wasting time, demands skill and self-awareness as you modify and apply the techniques of reading.

　　179. “In Japan, a most competitive society with stronger discipline than ours.” Says Isaac Stern. “children are ready to test their limits every day in many fields, including music.”

　　180. What does the phrase ‘learning to use a computer’ mean? It sounds like ‘learning to drive a car’; that is , it sounds as if there is some set of definite skills that, once acquired, enable one to use a computer.

　　181. The view over a valley of a tiny village with thatched(草盖的) roof cottages around a church; a drive through a narrow village street lined with thatched cottages painted pink or white; the sight over the rolling hills of a pretty collection of thatched farm buildings--these are still common sights in parts of England.

　　182. Competition is not only good in itself, it is the means by which other basic American values such as individual freedom, equality of opportunity, and hard work are protected.

　　183. The function of teaching is to cerate the conations and the climate that will make it possible for children to devise the most efficient system for teaching themselves to read.

　　184. Learning to read is made easier when teachers create an environment where children are given the opportunity to solve the problem of learning to read by reading.

　　185. The source of this interference remains unconfirmed, but increasingly, experts are pointing the blame at portable electronic devices such as portable computers, radio and cassette players and mobile telephones.

　　186. And although some airlines prohibit passengers from using such equipment during take-off and landing, most are reluctant to enforce a total ban, given that many passengers want to work during flights.

　　187. The rise of multinational corporations, global marketing, new communications technologies, and shrinking cultural differences have led to an unparalleled increase in global public relation or PR.

　　188. The progress from a rattle used by a baby in 3000 BC to one used by an infant today, however, is not characterized by inventiveness.

　　189. Bent stripes, called chevrons painted on the roads make drivers think that they are driving faster than they really are, and thus drivers slow down.

　　190. Therefore, the task for DDB Needham was to encourage consumers to consider other aspects of train in order to change their attitudes and increase the likelihood that trains would be considered for travel in the west.

　　191. These ads were strategically placed among family-oriented TV shows and programs involving nature and America in order to most effectively reach target audiences.

　　192. Why does cream go bad faster than butter? Some researchers think they have the answer, and it comes down to the structure of the food, not its chemical composition-a finding that could help rid some processed foods of chemical preservatives.

　　193. If FIFA, football’s international ruling body, wants to improve the standard of refereeing at the next World Cup, it should encourage referees to keep their eyes on the action from a distance, rather than rushing to keep up with the ball, the researcher argues.

　　194. While still in its early stages, welfare reform has already been judged a great success in many states at least in getting people off welfare.

　　195. But for many, the fact that poor people are able to support themselves almost as well without government aid as they did with it is in itself a huge victory.

　　196. Americans are proud of their variety and individuality, yet they love and respect few things more than a uniform, whether it is the uniform of an elevator operator or the uniform of a five-star general.

　　197. Since we are social beings, the quality of our lives depends in large measure on our interpersonal relationships.

　　198. Finally, other people may give us instrumental support--financial aid, material resources, and needed services-that reduces stress by helping us resolve and cope with our problems.

　　199. I headed off to college sure I was going to have an advantage over those students who went to big engineering “factories” where they didn’t care if you have values or were flexible.

　　200. Recycling also stimulates the local economy by creating jobs and trims the pollution control and energy costs of industries that make recycled products by giving them a more refined raw material.