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【1】of life at a fundamental level-the gene. The study o
In recent years a new farming revolution has begun, one that involves the【1】of life at a fundamental level-the gene. The study o
admin
2011-02-25
33
问题
In recent years a new farming revolution has begun, one that involves the【1】of life at a fundamental level-the gene. The study of genetics has【2】a new industry called biotechnology. As the name suggests, it【3】biology and modern technology through such techniques as genetic engineering. Some of the new biotech companies specialize in agriculture and are working feverishly to【4】seeds that give a high yield, that【5】disease, drought and frost, and that reduce the need for【6】chemicals. If such goals could be achieved, it would be most【7】. But some have raised concerns about genetically engineered crops.
In nature, genetic diversity is created within certain【8】. A rose can be crossed with a different kind of rose, but a rose will never cross with a potato. Genetic engineering【9】usually involves taking genes from one species and inserting them into another【10】to transfer a desired characteristic. This could mean, for example, selecting a gene which leads to the production of a chemical with anti-freeze【11】from an arctic fish, and inserting it into a potato or strawberry to make it frost-resistant.【12】, then, biotechnology allows humans to【13】the genetic walls that separate species.Like the green revolution,【14】some call the gene revolution contributes to the problem of genetic uniformity-some say even more【15】geneticists can employ techniques such as cloning and【16】culture, processes that produce perfectly【17】copies. Concerns about the erosion of biodiversity, therefore, remain. Genetically altered plants, however, raise new【18】, such as the effect they may have on us and environment. ".We are flying blindly into a new【19】of agricultural biotechnology with high hopes, few constraints and little idea of the potential【20】," said science writer Jemery Rifkin.
选项
A、skin
B、tissue
C、organ
D、muscle
答案
C
解析
考查词义辨析与上下文的逻辑关系。skin意为“皮肤”;tissue意为“组织”,指身体组织、肌肉组织等;organ意为“器官”;muscle意为“肌肉”。上文中提到了cloning,并且所填的词与culture(培育)搭配,故只有选项C正确。
转载请注明原文地址:https://kaotiyun.com/show/LZZ4777K
0
考研英语一
相关试题推荐
ThetextismainlyaboutTheCeltshelpedFrancetoresist
WhatkindofsocialformimmediatelyfollowedtheRomanRepublicAge?Inthelastparagraph,Romanexpansionwasdescribedvivi
Recentlegalresearchindicatedthatincorrectidentificationisamajorfactorinmanymiscarriagesofjustice.Italsosuggest
Recentlegalresearchindicatedthatincorrectidentificationisamajorfactorinmanymiscarriagesofjustice.Italsosuggest
WhichofthefollowingisNOTtrue?______Thenewapproachtothesocialsecuritysystemwillspend______
Thepersonwhocanseeashipwithoutsomefeelingofexcitementmusthaveverylittleimagination.Eventheideaofleavingthe
Virtuallyeverycompanywithacomputerisvulnerabletocomputerabuse,crimeandaccident.Securityofthecomputerandofthe
"Quiteanumberofstudentsgaveexcellentanswerstomylastquestion,"saidtheprofessorinhis______onourperformanceinth
Thosepart-timestudentsexpectedAtooffersomejobsBoncampusCduringtheDcomingsummervacation.
随机试题
MusicianWantedCanyouplaythedrumsortheguitar?Wouldyouliketomakesomemoneythisvacation?Weneedtwonewband
蜗杆传动机构的装配顺序,应根据具体情况而定,应()。
人们看书时,用红笔画出重点,便于重新阅读,是利用知觉的()
DIC最常见的原因是
描述一组正态分布资料离散程度大小的最佳指标是
该学术专著出版后,有许多人主张对该专著也享有著作权。下列说法中正确的是( )。依法合理使用魏教授的作品,必须( )。
每一个建设工程项目有不同类型和不同用途的信息,需要对这些信息进行编码。其中,对项目结构各层中的每一项任务进行编码的依据是()。
某企业从事某项投资活动的年投资收益率为10%。现有两个投资方案如下:甲方案:第一年缴纳企业所得税100万元的概率为20%,纳税150万元的概率为50%,纳税180万元的概率为30%;第二年纳税120万元的概率为40%,纳税160万元的概率为40%
一批货物,本来按获得50%的利润来定价。结果只卖出70%的货物,为尽早卖出余下的货物,商家决定按定价打折扣销售,这样所获得的全部利润,是原来的期望利润的82%,问打了多少折扣?
WatchoutforFallingSatellitesWhatIsHappening?Anout-of-controlUSspysatellitewillcrashtoEarthinthecoming
最新回复
(
0
)