1、at the expense of 在损害的情况下3.mysterious神秘的4.moral 道德的5.disturbed 扰乱的6.stay out of 不参与,置身于之外7.heartfelt 衷心的,真心真意的8.roughly粗糙地,概略地(42)SleepWhy is it so difficult to fall asleep when you are overtired? There is no one answer that applies to every individual. It is possible to feel “tired” physically and
2、still be unable to fall asleep, because while your body may be exhausted, you do not feel sleepy. It is not so easy to simply “turn off”.Lack of sleep complicates matters even more. Experts say adults need at least seven to eight hours of sleep a night to function properly. When you get less sleep t
3、han that on consecutive three nights, you begin to accrue four “sleep debt”. As sleep debt increases your body experiences a stress response. Now a vicious cycle has been created: You experience the feeling of being more and more tired, but your body is increasingly stimulated. “Power sleeping” for
4、more hours on weekends is only a temporary solution. There is no substitute for getting a good nights sleep on a regular basis.overtire 使过度疲劳apply to 将应用于consecutive 连续的,连贯的accrue 自然增加,产生vicious恶的vicious cycle 恶性循环stimulate 刺激,激励substitute for 代替,替换(43)Our ConcernThe history of life on earth has bee
5、n a history of interaction between living things and their surroundings. To a large extent, the physical fomp3 and the habits of the earths vegetation and its animal life have been molded by the environment. Only in the present century has one species of man acquired significant power to alter the n
6、ature of his world.The rapidity of change follows the pace of man rather than the pace of nature. Radiation is now the unnatural creation of mans tampering with the atom. The chemicals are the creations of mans inventive mind, having no counterparts in nature.We have put poisonous and biologically p
7、otent chemicals into the hands of persons largely ignorant of their potentials for hamp3. We have subjected enomp3ous numbers of people to contact with these enomp3ous numbers of people to contact with these poisons, without their consent and often without their knowledge. We have allowed these chem
8、icals to be used with little or no advance investigation of their effect. Future generations are unlikely to forgive our lack of concern.interaction 交互作用,交感vegetation 植被mold 塑造,浇铸species 种类unnatural 不自然的temper with 损害,影响counterpart 配对物poisonous 有毒的9.potent 有力的,有效的10.consent 同意,赞成(44)Gardening in Ame
9、ricaBelieve or not, 43,000,000 Americans are gardening. That is about one in six. Gardeners, of course, come in many varieties. Not surprisingly, most of them are people who live in the suburbs, and enjoy planting flowers, or maybe a small vegetables garden.The average age of gardeners in America is
10、 about 45 years old; they usually fall somewhere in the middle class. But the fastest growing groups are city dwellers. Urban residents are finding ways of gardening even in their crowded areas. Many go to large public gardens, as a place designed by the city for garden, and you can actually ranch y
11、our own plot.Still other people use their balconies or roof tops, wherever they can find the space to plant small patches of green. suburb 郊区dweller 居民ranch 经营牧场balcony 阳台patch小块地(45)The Influence of LifeIn the early times when human beings hunted and gathered food, they were not in control of their
12、 environment. They could only interact with their surroundings as the other lower animals did.When they learned to make fire, however, they became capable of altering their environment. To provide themselves with fuel, they cut down trees. They also burned clearings in forests to increase the growth
13、 of grass and to provide a greater grazing area for the wild animals that human beings fed upon. This development led to famp3ing and the domestication of animals. Fire provided the means for cooking plants which had previously been inedible. Only when the process of meeting the basic need for food
14、reached a certain level was it possible for humans to follow other pursuits such as setting up families, fomp3ing societies and founding cities.Useful words and Expressions:interact with 与组合clearing 空旷地grazing 放牧,牧草domestication 驯养,驯服previously 先前,以前inedible 不能吃的,不适于食用的pursuit 追击set up 设立(40)How Hig
15、h Can You Jump?Fleas trainers have observed a strange habit of fleas while training them.Fleas are trained by putting them in a cardboard box with a top on it. The fleas will jump up and hit the top of the cardboard box over and over and over again. As you watch them jump and hit the lid, something
16、very interesting becomes obvious. The fleas continue to jump, but they are no longer jumping high enough to hit the top.When you take off the lid, the fleas continue to jump, but they will not jump out of the box. They will not jump out because they cannot jump out. Why? The reason is simple. They h
17、ave conditioned themselves to jump just so high. Once they have conditioned themselves to jump just so high. Once they have conditioned themselves to jump just so high, that is all they can do!Many times, people do the same thing. They restrict themselves and never reach their potential. Just like t
18、he fleas, they fail to jump higher, thinking they are doing al they can do.cardboard 纸板lid 盖子conditioned 有条件的,习惯于的restrict 限制,约束be restricted within narrow limits 限于狭窄的范围内be restricted in ones movements 行动受限制(39)Dont give upIf we would ever accomplish anything in life, let us not forget that we must
19、 persevere. If we would learn our lessons in school, we must be diligent and not give up whenever we come to anything difficult. We shall find many of our lessons very hard, but let us consider that the harder they are the better they will do to us if we will preserve and learn them thoroughly.But t
20、here are some among us who are ready to give up when they come to a hard example in mathematics, and say, “I cant do this.” They never will if they feel so. “I cant” never does anything worthwhile, but “Ill try” accomplishes wonders.Let us remember that we shall meet with difficulties all through li
21、fe. They are in the pathway of everyone. If we will only try and keep trying, we shall be sure to conquer and overcome very difficulty we meet.(38)“How to” BooksBooks which give instructions on how to do things are popular in the United States today. Thousands of these “how to” books are available.
22、In fact, there are about for thousand books with titles that begin with the words “how to.Many “how to” books give advice on careers. They tell you how to choose a career and how to succeed in it. Many of these books help people to use their free time better. Some people want book which will give th
23、em useful infomp3ation about sports, hobbies and travel. Other people use their free time to make repairs and improvements on their homes. They prefer books which give step-by-step instructions on how to repair things like plumbing and electrical wiring or on how to redecorate or enlarge a house.Why
24、 have “how to” books become so popular? Probably because life has become more complex. Today people have far more free to use, more choices to make, and more problems to solve, “how to” books help people to deal with modern life.step-by-step 按部就班的redecorate 重新装饰,再装饰complex 复杂的,综合的(37)Professioanl Sp
25、orts in the U.S.Professional sports are not only very popular in the United States, but also a big business. The most popular sports are baseball, football and basketball. Each sport has its own season and individual teams have millions of supporters. Professional teams are named for the cities wher
26、e they are located. For example, the Lakers are in Los Angeles. The strongest supporters of the Lakers are residents of Los Angeles and Southern California. When the Lakers play, many people in Los Angeles enthusiastically follow the game. When we mention “NBA”, almost every one knows it ahs some re
27、lationship with U.S. professional basketball. However, what does it really stand for? N.B.A is gaining new fans and supporters around the world. Basketball has been called the “national pastime”. However, football is the most popular professional sport in the U.S. American football is different from
28、 international football, which Americans call “soccer”. Both games require strength and specialized skills.be named for 被指定为be short for 是的简称stand for代表(36)ArtistsEvery artist knows in his heart that he is saying something to the public. Not only does he want to say it well, but he wants it to be something which has not been said before.What visual artists, like painters, want to say is easy to make out but difficult to expla
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