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
The study of genetics has given rise to a profitable new industry called biotechnology. As the name【C1】______, it combines biolo
The study of genetics has given rise to a profitable new industry called biotechnology. As the name【C1】______, it combines biolo
admin
2014-02-22
46
问题
The study of genetics has given rise to a profitable new industry called biotechnology. As the name【C1】______, it combines biology and modern technology through such【C2】______as genetic engineering. Some of the new biotech companies, as they are called, 【C3】______in agriculture and are working enthusiastically to patent(取得专利)seeds that give a high yield(产量), that【C4】______disease, drought and frost, and that reduce the need for dangerous chemicals. 【C5】______such goals could be achieved, it would be most beneficial. But some have raised【C6】______about genetically engineered crops.
"In nature, genetic diversity(多样性)is created within certain limits," says the book Genetic Engineering, Food and Our Environment. " A rose can be crossed(杂交)with a different kind of rose, but a rose will【C7】______cross with a potato... " Genetic engineering, on the other hand, usually involves taking genes from one species and inserting them into another in an attempt to【C8】______a desired property or character. This could mean, 【C9】______, selecting a gene which leads to the production of a chemical with antifreeze properties from an arctic fish, and joining it into a potato or strawberry to make it frost-resistant. It is now possible for plants to be engineered with genes【C10】______from bacteria, viruses, insects, animals or even humans. 【C11】______, then, biotechnology allows humans to break the genetic walls that【C12】______species.
Like the green revolution, 【C13】______some call the gene revolution【C14】______to the problem of genetic uniformity(千篇一律)— some say even more so【C15】______geneticists can employ techniques such【C16】______cloning and organ culture, processes that produce perfectly 【C17】______copies, or clones. Concerns about the 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.
【C18】
选项
A、issues
B、height
C、difficulties
D、goals
答案
A
解析
名词词义辨析。根据句意altered plants带来的新问题。选项中,只有issues“议题,问题”符合要求。
转载请注明原文地址:https://kaotiyun.com/show/cFQO777K
0
考博英语
相关试题推荐
IntheUnitedStatesandinmany【51】countriesaroundtheworld,therearefourmainwaysforpeopletobeinformed【52】developmen
Thebusinessofadvertisingistoinventmethodsofaddressingmassiveaudiencesinalanguagedesignedtobeeasilyaccessible
Drunkendriving-sometimescalledAmerica’ssociallyacceptedformofmurder-hasbecomeanationalepidemic(流行病).Everyhour
Thevegetativeformsofmostbacteriaarekilledbydryinginair,althoughthedifferentspeciesexhibitpronounceddifferences
Aswomendemonstrateagrowingappetiteforconsumertechproducts,retailersandmanufacturersarestillonlybeginningtocate
Aswomendemonstrateagrowingappetiteforconsumertechproducts,retailersandmanufacturersarestillonlybeginningtocate
Thelastdecadehasseenatremendousexpansionofscientificknowledgeinhumangenetics.Ourunderstandingofhumangenesand
Duringthenormaldevelopmentofself,achildisaffectedbycertaininfluentialfactors.1._____.Infantsformanattachmentwi
Islanguage,likefood,abasichumanneedwithoutwhichachildatacriticalperiodoflifecanbestarvedanddamaged?Judgin
Sociologistsusethetermpowertorefertothecapacityofpeopleorgroupstocontrolorinfluencetheactionsofothers,whet
随机试题
排卵前正常卵泡最大直径范围是
引起脑栓塞最常见的栓子来源是()。
引起皮肤反应的化疗药物有
单位工程质量验收记录表中,验收记录和验收结论分别由()填写。
蒸汽吹扫时,吹扫压力应尽量维持在管道设计压力的( )左右,最低压力不应低于设计压力的( )。
根据《民用机场飞行区技术标准》MH5001—2013规定,跑道表面应具有良好的平整度,用3m尺测量时,最大间隙不大于()。
根据《水利工程建设重大质量与安全事故应急预案》,工级水利工程建设质量与安全事故为已经或者可能导致死亡(含失踪)()人以上,或直接经济损失1亿元以上的事故。
会计的最基本职能是()。
在机房工程中,机房环境应满足()。
TheSecondWorldWarendedwiththeunconditionalsurrenderofGermanyin______
最新回复
(
0
)