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
考研
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
2019-06-10
4
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 modem 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 a 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 the production of a chemical with anti-freeze 【C11】______ from an artic 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, 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
B
解析
考查名词辨析。所填词与with搭配,形容前面的chemical,anti-freeze应该是化学物质的一种特征,所以选B.property“特性”,与前面一句中的characteristic同义复现。quality虽然也有“特性”的含义,但它表示此义时多用于指人;priority“优先权”;quantity“数量”,均不符合语义。
转载请注明原文地址:https://kaotiyun.com/show/WgnZ777K
0
考研英语一
相关试题推荐
Prettyinpink:adultwomendonotrememberbeingsoobsessedwiththecolour,yetitispervasiveinouryounggirls’lives.It
Prettyinpink:adultwomendonotrememberbeingsoobsessedwiththecolour,yetitispervasiveinouryounggirls’lives.It
Homeworkhasneverbeenterriblypopularwithstudentsandevenmanyparents,butinrecentlyyearsithasbeenparticularlysco
Homeworkhasneverbeenterriblypopularwithstudentsandevenmanyparents,butinrecentlyyearsithasbeenparticularlysco
Don’ttalk:yourcellphonemaybeeavesdropping.Thankstorecentdevelopmentsin"spyphone"software,ado-it-yourselfspook
Don’ttalk:yourcellphonemaybeeavesdropping.Thankstorecentdevelopmentsin"spyphone"software,ado-it-yourselfspook
Arecentparliamentaryreportblamesthegovernmentandthefoodindustryforthegrowthinobesity.TheDepartmentofTransport
Whenwecomparemenwithanimals,wemustrememberthatamanisalsoananimal.Butinmakingthiscomparison,itissometimes
Whatnewresearchrevealsabouttheadolescentbrain.We’relearningthattheteenyearsareaperiodofcrucialbraindevelopm
Whatnewresearchrevealsabouttheadolescentbrain.We’relearningthattheteenyearsareaperiodofcrucialbraindevelopm
随机试题
肾盂。肾炎最常见的致病菌是
下列四个选项中,说法不正确的是()。
洞内结构防排水,符合要求的有()。
对于构件不出现拉应力及构件虽有拉应力,但不超过混凝土的抗拉强度的混凝土构件,一般只有( )才能达到。
下列关于会计档案管理的表述中,正确的是()。
mortgage/securedloan
威尼斯面临的问题具有典型意义。一方面,为了解决市民的就业,增加城市的经济实力,必须保留和发展它的传统工业,这是旅游业所不能替代的经济发展的基础;另一方面,为了保护其独特的生态环境,必须杜绝工业污染,但是,发展工业将不可避免地导致工业污染。以下哪项能作为结论
若内存按字节编址,用存储容量为8K×8位的存储器芯片构成地址编号7000H至EFFFH的内存空间,则至少需要(2)片。
以下叙述中正确的是
A、Veryhappy.B、Greatlysurprised.C、Ratherdisappointed.D、Veryangry.CM:Mary,I’msorry.They’vejustsaidtheycouldn’tsup
最新回复
(
0
)