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
75
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.
【C15】
选项
A、that
B、because
C、if
D、when
答案
B
解析
逻辑关系。根据空前面的信息the problem of genetic uniformity可以判定后面的内容与前面构成因果关系,连词because可以引导原因状语从句,故答案为B。
转载请注明原文地址:https://kaotiyun.com/show/qFQO777K
0
考博英语
相关试题推荐
IntheUnitedStatesandinmany【51】countriesaroundtheworld,therearefourmainwaysforpeopletobeinformed【52】developmen
Thebusinessofadvertisingistoinventmethodsofaddressingmassiveaudiencesinalanguagedesignedtobeeasilyaccessible
Friendsplayanimportantpartinourlives,andalthoughwemaytake【46】forgranted,weoftendon’tclearlyunderstandhowwem
Inthisfactory,suggestionsoftenhavetowaitfurmonthsbeforetheyarefully______.
positiondefineforgetfulfancykeybalanceimportanceunhealthylacksubjectopenple
Irejectabsolutelythe______thatprivatizationisnowinevitableinourindustry.
Afterafewshortbutinterminableseconds,U.S.AstronautNeilArmstrongplacedhisfootfirmlyonthefine-grainedsurfaceof
StandardEnglishisthevarietyofEnglishwhichisusuallyusedinprintandwhichisnormallytaughtinschoolsandtonon-nat
TheUNofficialsaidaidprogramswillbe______untilthereisadequateprotectionforreliefpersonnel.
ThepsychologyofwarrantiesProtectionracket保单心理学保护之诈Ifextendedguaranteesareoverpriced,
随机试题
以下_______不是促销的基本目标。
OneofmyfondestChristmasmemorieswasalsooneofourfamily’sbleakest(最令人沮丧的).Wewerejustlittlekids,andonChristma
为预防麻疹可
患者,男,18岁,感冒后鼻衄,鼻腔干燥,口干,咳嗽少痰,低热,舌质红,苔薄黄,脉数,治法应
“救人闯红灯”是否应受罚?谈谈你的观点。
诗歌的翻译者必须实现字与字的对译,这在任何语言中都是不存在的,正如钢琴的旋律不可能发生在小提琴的演奏中一样。当然,小提琴可以演奏与钢琴同样的作品,但是,只有小提琴演奏者按着小提琴固有的、内在的风格演奏,才可以完美地表现原作的精神。以下哪个选项表明了作者的论
Withineconomictheory,thereareinanycasequitedifferentassumptionsaboutindividualbehaviour.Someneoclassicalmodelsa
在OSI参考模型中指出同一个系统相邻两层实体间交互是通过()进行的。
Manyinstructorsbelievethataninformal,relaxedclassroomenvironmentis【1】tolearningandinnovation.Itisnotuncommon
ACompany’sBattletoShowItWasaVictimofAbusiveShort-sellingA)Shortsellersbetagainstcompaniesbyborrowingtheirs
最新回复
(
0
)