Whatwillpeopledieof100yearsfromnow?Ifyouthinkthatisasim...
问题详情:
What will people die of 100 years from now? If you think that is a simple question,you have not been paying attention to the revolution that is taking place in bio-technology(生物技术). With the help of new medicine,the human body will last a very long time. Death will come mainly from accidents,murder and war. Today’s leading killers,such as heart disease,cancer,and aging itself,will become distant memories. In discussion of technological changes,the Internet gets most of the attention these days. But the change in medicine can be the real technological event of our times. How long can humans live? Human brains were known to decide the final death. Cells(细胞) are the basic units of all living things,and until recently,scientists were sure that the life of cells could not go much beyond 120 years because the basic materials of cells,such as those of brain cells,would not last forever. But the upper limits will be broken by new medicine. Sometime between 2050 and 2100,medicine will have advanced to the point at which every 10 years or so,people will be able to take medicine to repair their organs(器官). The medicine,made up of the basic building materials of life,will build new brain cells,heart cells,and so on-in much the same way our bodies make new skin cells to take the place of old ones. It is exciting to imagine that the advance in technology may be changing the most basic condition of human existence,but many technical problems still must be cleared up on the way to this wonderful future. 28.According to the passage,human death is now mainly caused by ________. A.diseases and aging B.accidents and war C.accidents and aging D.heart disease and war 29.In the author’s opinion,today’s most important advance in technology lies in(在于) ________. A. the Internet B.medicine C.brain cells D.human organs 30.Humans may live longer in the future because ________. A.heart disease will be far away from us B.human brains can decide the final death C.the basic materials of cells will last forever D.human organs can be repaired by new medicine 31.How long can humans live in the future according to the passage? A.Over 100 years. B.More than 120 years. C.About 150 years. D.The passage doesn’t tell us.
【回答】
ABDB
知识点:阅读理解
题型:阅读理解
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打秋千时,为使秋千越荡越高,人应有一个从直立到蹲下,又从蹲下到站直的过程.则打秋千时 A.人的机械能是守...
问题详情:打秋千时,为使秋千越荡越高,人应有一个从直立到蹲下,又从蹲下到站直的过程.则打秋千时 A.人的机械能是守恒的 B.人应在最低点站起来 C.人应在最高点站起来 D.人在最低点时失重【回答】C知识点:未分类题型:选择题...
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问题详情:某班抽取6名同学进行体育达标测试,成绩如下:80,90,75,80,75,80.下列关于对这组数据的描述错误的是( )A.众数是80 B.平均数是80 C.中位数是75 D.极差是15【回答】C知识点:数据的集中趋势题型:未分类...
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已知铁的一种氧化物,其中含氧元素的质量分数为30%,则这种铁的氧化物的化学式为 ( ) A.FeO ...
问题详情:已知铁的一种氧化物,其中含氧元素的质量分数为30%,则这种铁的氧化物的化学式为()A.FeO B.Fe2O3C.Fe3O4 D.无法判断【回答】B知识点:金属的化学*质题型:选择题...
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已知(1+ɑx)(1+x)5的展开式中x2的系数为5,则ɑ=( )A、-4 B、-...
问题详情:已知(1+ɑx)(1+x)5的展开式中x2的系数为5,则ɑ=( )A、-4 B、-3 C、-2 D、-1【回答】D知识点:计数原理题型:选择题...
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