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
11
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.
【C11】
选项
A、In contrast
B、In that
C、In case
D、In essence
答案
C
解析
词组辨析。In contrast“与此相反;比较起来”;In that“因为;由于;既然”;In case“万一;假使”;In essence“本质上;其实;大体上”。根据前后文的句意和逻辑关系判定,不是比较关系和因果关系,排除A项和B项,空格所在句子说明的也不是基因重组的本质,故答案为C。
转载请注明原文地址:https://kaotiyun.com/show/iFQO777K
0
考博英语
相关试题推荐
Sincethedawnofhumaningenuity,peoplehavedevisedevermorecunningtoolstocopewithworkthatisdangerous,boring,burd
Friendsplayanimportantpartinourlives,andalthoughwemaytake【46】forgranted,weoftendon’tclearlyunderstandhowwem
Themultibillion-dollarfitnessindustry______fatprofitsfromourhungertolookgood.
Statesareconsideringmajorchangesinprepaidcollegetuitionprograms-raisingprices,restrictingparticipationofcancelin
WhenIdecidedtoquitmyfulltimeemploymentitneveroccurredtomethatImightbecomeapartofanewinternationaltrend.
LikemostotherAmericancompanieswitharigid______,workersandmanagershavestrictlydefinedduties.
Soil______isanaturalprocess.Itbecomesaproblemwhenhumanactivitycausesittooccurmuchfasterthanundernaturalcondi
Watchingnewsprogramatnighthasbecomean______partofthelivesofmostpeopleinbigcities.
Fromchildhoodtooldage,wealluselanguageasameansofbroadeningourknowledgeofourselvesandtheworldaboutus.When
ModernlorehasitthatinEnglanddeathisimminent,inCanadainevitableandinCaliforniaoptional.Smallwonder.Americans’
随机试题
A—limitedliabilityJ—unfaircompetitionB—businessscopeK—wholesalerC—commercialchannelsL—un
党的十七大提出加强党的制度建设的重点是
无差异市场营销:指企业不考虑各子市场的特性,而只注重市场的共性,决定只推出单一的产品,运用单一的市场营销组合,力求在一定程度上迎合尽可能多的顾客需求。根据上述定义,下列属于无差异市场营销的是()。
外汇市场是进行跨国界货币支付和货币兑换的场所,包括金融机构之间相互进行的同业外汇市场和()之间进行的外汇交易市场。
市场营销学的研究对象是以()为中心的企业市场营销活动及其规律。
“原因和结果是我们思维的创造物”,“在自然界中,既没有原因,也没有结果”,对这句话理解正确的有()。
《中华人民共和国老年人权益保障法(修订草案)》明确规定,赡养人应履行对老年人经济上供养、生活上照料和精神上慰藉的义务,照顾老年人的特殊需求。应当关心老年人的精神需求,不得忽视、冷落老年人。与老年人分开居住的赡养人,应当经常看望或者问候老年人。而专家表示,应
设z=z(x,y)是由x2一6xy+10y2一2yz一z2+18=0确定的函数,求z=z(x,y)的极值点和极值.
Whatdoesthewritermeanbysaying"NowmanyEuropeancountries,areexpectedtofollowthis______.example"(Lines2-3,Pa
ThepurposeofthismemoistoletyouknowthatsometechniciansfromtheITteamwillcomeinat11amthismorningtocheckt
最新回复
(
0
)