首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
In recent years a new farming revolution has begun, one that involves the【C1】______of life at a fundamental level--the gene. The
In recent years a new farming revolution has begun, one that involves the【C1】______of life at a fundamental level--the gene. The
admin
2012-12-13
90
问题
In recent years a new farming revolution has begun, one that involves the【C1】______of life at a fundamental level--the gene. The study of genetics has【C2】______a new industry called biotechnology. As the name suggest, it【C3】______biology and modern technology through such techniques as genetic engineering. Some of the new biotech companies specialize in agriculture and are working feverishly to【C4】______seeds that give a high yield, that【C5】______diseases, drought and frost, and that reduce the need for【C6】______chemicals. If such goals could be achieved, it would be most【C7】______. But some have raised concerns about genetically engineered crops.
In nature, genetic diversity is created within certain【C8】______. A rose can be crossed with different kind of rose, but a rose will never cross with a potato. Genetic engineering,【C9】______usually involves taking genes from one species and inserting them into another【C10】______to transfer a desired characteristic. This could mean, for example, selecting a gene which leads to a production of a chemical with anti-freeze【C11】______from an arctic fish, and inserting it into a potato or strawberry to make it frost-resistant.【C12】______, then, biotechnology allows humans to【C13】______the genetic walls that separate species.
Like the green revolution,【C14】______some call the gene revolution contributes to the problem of genetic uniformity--some say even more so【C15】______geneticists can employ techniques such as cloning and【C16】______culture (培养), processes that produce perfectly【C17】______copies. Concerns about the erosion of biodiversity, therefore, remain. Genetically altered plants, however, raise new【C18】______such as the effects that they may have on us and the environment. "We are flying blindly into a new【C19】______of agricultural biotechnology with high hopes, few constraints, and little idea of the potential【C20】______," said science writer Jeremy Rifkin.
【C11】
选项
A、quality
B、property
C、priority
D、quantity
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/p3w7777K
0
大学英语四级
相关试题推荐
BritishCuisine:theBestofOldandNewBritishcuisine(烹饪)hascomeofageinrecentyearsaschefs(厨师)combinethebest
BritishCuisine:theBestofOldandNewBritishcuisine(烹饪)hascomeofageinrecentyearsaschefs(厨师)combinethebest
BritishCuisine:theBestofOldandNewBritishcuisine(烹饪)hascomeofageinrecentyearsaschefs(厨师)combinethebest
BritishCuisine:theBestofOldandNewBritishcuisine(烹饪)hascomeofageinrecentyearsaschefs(厨师)combinethebest
BritishCuisine:theBestofOldandNewBritishcuisine(烹饪)hascomeofageinrecentyearsaschefs(厨师)combinethebest
BritishCuisine:theBestofOldandNewBritishcuisine(烹饪)hascomeofageinrecentyearsaschefs(厨师)combinethebest
Asksomeonewhattheyhavedonetohelptheenvironmentrecentlyandtheywillalmostcertainlymentionrecycling.Recyclingin
Asksomeonewhattheyhavedonetohelptheenvironmentrecentlyandtheywillalmostcertainlymentionrecycling.Recyclingin
随机试题
酒精拭浴
()是指在贷款期内每月以相等的额度平均偿还贷款本息。
甲、乙均为国有企业,甲向乙购买一批货物,约定采用托收承付验货付款结算方式。2011年3月1日,乙办理完发货手续,发出货物;3月2日,乙到开户行办理托收手续;3月10日,铁路部门向甲发出提货通知;3月14日,甲向开户行表示承付,通知银行付款。则承付期的起算时
一般情况:韩某,女,28岁,某外企职员。求助者自述:在大学各方面表现优异,成绩优秀,大学毕业以后就进入外企工作。进外企的这一年多求助者就出现了心情压抑问题,主要原因就是自己的外语不好,与老外上司交流困难,致使自己在工作上不能得心应手。她曾反复与朋
思想是客观事物在人脑中___________和___________的反映。
为千方百计增加居民收人,党的十八大报告提出了“两个同步”。具体指()。
2011年6月27日,十一届全国人大常委会第二十一次会议继续审议行政强制法草案。上述材料表明十一届全国人大常委会在行使()。
在某市,市建委在财务制度上可以参照市财政局的规定执行,不必服从。()
有以下程序:#includevoidfun(char*s){while(*s){if(*s%2==0)printf("%c",*s);s++:}}main()
Individualsandbusinesseshavelegalprotectionforintellectualpropertytheycreateandown.Intellectualproperty【C1】______f
最新回复
(
0
)