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
54
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、brake
B、blaze
C、breach
D、brand
答案
C
解析
考查词义辨析。brake意为“刹车”;blaze意为“燃烧,照耀”;breach意为“打破,突破”;brand意为“污辱”。所填词的宾语是“the genetic walls”,故选项C正确。
转载请注明原文地址:https://kaotiyun.com/show/UZZ4777K
0
考研英语一
相关试题推荐
Maintainingclassroomdisciplineisagrowingproblemformanyschools.(46)Somechildrenseemincapableoffollowingtherules,
Maintainingclassroomdisciplineisagrowingproblemformanyschools.(46)Somechildrenseemincapableoffollowingtherules,
(46)Technologyhasmadeiteasytocrossnationalfrontiersphysically,buttherehasbeennoinventionofnewmentalhabitsto
(46)Technologyhasmadeiteasytocrossnationalfrontiersphysically,buttherehasbeennoinventionofnewmentalhabitsto
(46)Technologyhasmadeiteasytocrossnationalfrontiersphysically,buttherehasbeennoinventionofnewmentalhabitsto
OfallthetruthsthatthisgenerationofAmericansholdself-evident,fewaremoredeeplyembeddedinthenationalpsychethan
ArecenthistoryoftheChicagomeat-packingindustryanditsworkersexamineshowtheindustrygrewfromitsappearanceinthe
Recentlegalresearchindicatedthatincorrectidentificationisamajorfactorinmanymiscarriagesofjustice.Italsosuggest
Recentlegalresearchindicatedthatincorrectidentificationisamajorfactorinmanymiscarriagesofjustice.Italsosuggest
Thediscoveryoftheshipisimportanttostudentsofearlyshipsandtheirroutesbecause______.WhenwasthewreckofKyreni
随机试题
行政强制执行对象为动产的,行政机关应当向()所在地有管辖权的人民法院申请强制执行。
(2011年单项选择第26题)下列证据中,人民法院可以依职权主动调取的有()。
城市规划的任务是根据一定时期经济社会的发展目标,确定城市()和发展方向。
选择合适的( )和签订完整有效的设备采购合同是设备采购质量管理的重要环节。
《会计基础工作规范》是财政部制定并发布的会计规范性文件,不是国家统一的会计制度。()
企业现金清查中,经检查仍无法查明原因的现金短款,经批准后应计入()。
道教正一道的主要特征是()。
2022年1月27日,习近平总书记在山西省晋中市考察调研时指出,要(),全面保护好历史文化遗产,统筹好旅游发展、特色经营、古城保护,筑牢文物安全底线,守护好前人留给我们的宝贵财富。①敬畏历史②敬畏文化③敬畏生态
已知A=,矩阵X满足A*X=A—1+2X,其中A*是A的伴随矩阵,则X=________。
Thoughitismere1to3percentofthepopulation,theupperclasspossessesatleast25percentofthenation’swealth.Thisc
最新回复
(
0
)