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       251.dispel the mist and explain many phenomena that we thought of as mysteries in the past

　　252.both the senior citizens and the youth

　　253.Only this way can the essence the of traditional culture be inherited as it should be.

　　254.Zoos provide recreation and refreshment for fatigued urban dwellers.

　　255.dreamlands for small children

　　256.dragon's descendants 龙的传人

　　257.add to their knowledge something they will never acquire in the classroom

　　258.research facilities

　　259.gradually rises to 10% at 8:00 and maintains the same for the next 2 hours

　　260.There is ... increase ... ,however, after that it drops.

　　261.During the period from .. to .. , the output increased.

　　262.This is not a matter of the-earlier-the-better when we discuss sth.

　　263.It's difficult for them to cope with problems that others find easy to handle.

　　264.near-sightedness and stunted growth

　　265.sb should be on guard against sth.

　　266.Many people hold optimistic attitude towards... ,and are confident of the positive alterations it will bring to the present world.

　　267.transformation

　　268.People who believe in different religions may learn to give understanding to one another.

　　269.I hope you will place strong emphasis on living a healthy life in order to be truly happy.

　　270.The 'healthy' in question refers to being at the same time mentally and physically healthy.

　　271.From this prospective, sb can be considered as...

　　272.receive higher education

　　273.His work is more meaningful to the society he lives in.

　　274.Economists and merchants may serve as perfect examples to verify this point.

　　275.One's earning can not be solely determined by his education background.

　　276.We should decide how we are to define "personal income" before finally judging who should own more.

　　277.He set the tone in the house. 在家里说了算

　　278.There is not a great deal of difference between A and B.

　　279.The figures bottomed out in ...

　　280.This is one of the side effects brought about by this modern world.

　　281.Failure to take this responsibility constitutes delinquency as parents.

　　282.be eliminated from the chance to get a proper education

　　283.The juvenile crime rate will undoubtedly be rapidly brought down and controlled.

　　284.The overwhelming burden of educating children falls upon the teachers' shoulders.

　　285.job market

　　286.I feel that it is not too much to say that modern technology has reduced human beings to being slaves of machines.

　　287.care nothing about job satisfaction and enjoying life

　　288.but modern society makes this prospect less and less likely

　　289.This can serve as an incentive for successful enterprises to attract talented workers.

　　290.Fast food, as its name implies, is usually quick to prepare.

　　291.It saves your time.So that you can devote more energy to your work and gain competitive edge.

　　292.it is less tasty and less nutrition

　　293.Traditional foods generally involve elaborate preparations.

　　294.Like it or not, it is here to stay.

　　295.The co-existance of the two kinds of foods only makes our life more colorful.

　　296.People can no longer afforded to be computer-illiterate.

　　297.This will put this childern in an unfaorable position in the future job market.

　　298.You can still use your mind to think when you have a computer,and the use of computer and training in writing and calculate are not mutually cxclusive.

　　299.potential harmful impact on sb

　　300.such worries have proved to be unfounded