克隆的利弊(The Advantages and Disadvantages of cloning)
To clone or not to clone, is that the question? Advanced technology has already pushed human being to edges,such as the production of weapons of mass destruction,the destruction of Ozone by Freon ,and the application of clone.The heated deabte over whether cloning technique should be used in human reproduc-- tion must be considered as a serious issue.
Clone, to a certain degree, is beneficial to mankind.Such disease as Parkinsons will possiblly be cured in the future in the hope of further applying of clone.However,the abuse of this technology will bring human being unthinkable destruction. Since the declaration of the death of Dolly,we are more conscious of the inefficient procedure of clone.Acorrding to "Dolly‘s false legacy",the incidence of death among fetuses and offspring produced by cloning is much higher than it is through natural reproduction--roughly 10 times as high as normal before birth and 3 times as high after birth.And even you may argue that this technology will be perfected in the future, i don‘t see there is any point in whole--being cloning. Many people consider this technology a promising one as to bring all human being to a new era in which all human reproduction will be accomplished by cloning.Thus scientists in some countries have already started their great plan to clone human.But let‘s think, what is the practical value in doing so?You may tell me that it can bring hope for those couples unable to have children because they might choose to have a copy of one of them rather than accept the gene intrusion from a doner.But imagine,if you have a child owning the same apperance as yours or your husband‘s, will you accept it without any uncomfort?
Don‘t you think it is embarrassing?Or if this kind of human reproduction is allowed,terrorists may get hold of it and reproduce lots of "American Presidents".Don‘t you agree that these presidents might bring the world much more chaoes?Besides these terrible aspects,the cloning of whole--being may destroy the diversity of people of the globe. Of course, there still remains much more disadvantages of the application of cloning reproduction of human being and animals. We should be extremely cautious of what we do and thus remember we will sure be respondible for all the results created by ourselves!!! So how do u think about it?
牛津实用英语语法:317 间接引语中的问句
牛津实用英语语法:352日期
牛津实用英语语法:348 基数词(形容词及代词)
牛津实用英语语法:324 混合类句式的间接引语形式
牛津实用英语语法:358 后缀ful
牛津实用英语语法:329 though/although和in spite of
牛津实用英语语法:333 as,when,while意为although(尽管)
牛津实用英语语法:347 so和not可替代that从句
牛津实用英语语法:328 从属连词
牛津实用英语语法:338 原因从句和结果/原因从句
牛津实用英语语法:305 介词与被动态动词连用
牛津实用英语语法:339 such/so…that引导的结果从句
牛津实用英语语法:312 could用于间接引语
牛津实用英语语法:306 被动态动词后的不定式结构
牛津实用英语语法:343 作主语的名词从句
牛津实用英语语法 :319以 will you?/would you?/could you?
牛津实用英语语法:341 比较从句
牛津实用英语语法:314 间接引语中的时间及地点表达法
牛津实用英语语法:336 目的从句
牛津实用英语语法:310 间接引语中的虚拟过去时
牛津实用英语语法:342 时间从句
牛津实用英语语法:340 让步从句
牛津实用英语语法:345 位于某些名词之后的that从句
牛津实用英语语法:293 it is time+ 虚拟过去时
牛津实用英语语法:332 as意为when/while(当……时)
牛津实用英语语法:322 let’s,let us,let him/them用于间接引
牛津实用英语语法:360 ie和ei
牛津实用英语语法:321间接命令的其他表示方法
牛津实用英语语法:349 基数词的几点注意事项
牛津实用英语语法:353度量衡
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