SPEED TIME1(2:03)打下这个时间手都抖了......我的天 我还没有看懂啊 According to analysize the research of 46 peer-reviewed studies published over the past 40 years,teh scientists have concluded that even the very lowest levels of radiation are harmful to life.
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TIME2(2:06)今天是要怎样啊~~~ The scientists reported significant negative effects and they said because these effects were not obvious.If we see effects at these low levels ,then we have to be thinking differently about how we develope regulations for exposure,and especially intentional exposure to populations.
TIME3(1:43)忍不住就会回读....回读.....回读......次奥 The scientists recently publiced a report abou the women and men's varying height .And it has leaded to a difference in reproductive success.The more shorter women ,the more children they have.However,with men ,this is the other way around. TIME4(1:44) The intralocus sexual conflict is a particular trait is an advantage when it presents in one sex,but a disadvantage when it presents in the other.And it was clearly visible.It is till unclear why shorter women have more children. TIME5(2:31)~~~~ The global warming would cause the rate of ice melting increased,which is melting faster in one area.And this will change the shape of the ice mass over Greenland.That is,Global climate might affect any specific region on Earth.其实我觉得这篇文章就是说的标题的内容.........
2‘58 Even the lowest level of radiation can do damage to organisms,such as DNA damage ;Scientists study areas of high natural radiation; how the studies are conducted and who are studied; possible effects of radiation
2'41 Low radiation is actually measurable; M hopes that this study will better inform the risk of radiation;develop regulations for exposures
2'03 Natural selection exists in the height of human;
1'58 A trait that is advantageous to one sex may be disadvantegeous to the opposite.It is possible to predicte the sex of the child from his/her uncle/aunt. The mechanism behind it is unknown.
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4'47 Hydra does not show any signs of aging and is immortal. Its reproduction way is budding rather than mating. Stem cells in human lose ability to proliferate when human age. By studying the gene determining the immortality of Hydra will help to understand the longetivity of human Two factors determine aging and longetivity of organisms.
楼主辛苦了~~~~~ 2’10 The radiation is lower than before, but it is still harmful to health. 2’02 Scientists reported negative effect of the radiation in some categories, but there has beed sentiment in the community. 1’23 Natural selection is still occurring in human beings. Explain the example of height in human beings. 1’31 Differences in selection pressure in human beings that shorter families are more successful at reproducing. E.g. short women have advantage to reproduce one sex; reproduce the earlier, could reproduce the more. 2’08 The temperature affects Greenlands’s land and make it melt increasingly. Scientist propose 2 research ways that indicate the current situation. The prediction now is conservative, the melting and ice-flowing is more severe. 越障 5‘10 生词本：
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发表于 2012-11-15 16:19:01
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