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
43
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、lines
B、limits
C、space
D、ages
答案
C
解析
考查词义辨析及搭配。line意为“行业,职业”;limit意为“界限,限度”;space意为“范围,场所”;age意为“时代,年代”。所填词与within搭配,故选项C正确。
转载请注明原文地址:https://kaotiyun.com/show/PZZ4777K
0
考研英语一
相关试题推荐
Maintainingclassroomdisciplineisagrowingproblemformanyschools.(46)Somechildrenseemincapableoffollowingtherules,
Maintainingclassroomdisciplineisagrowingproblemformanyschools.(46)Somechildrenseemincapableoffollowingtherules,
ArecenthistoryoftheChicagomeat-packingindustryanditsworkersexamineshowtheindustrygrewfromitsappearanceinthe
Recentlegalresearchindicatedthatincorrectidentificationisamajorfactorinmanymiscarriagesofjustice.Italsosuggest
Recentlegalresearchindicatedthatincorrectidentificationisamajorfactorinmanymiscarriagesofjustice.Italsosuggest
TheimplicationofthesecondparagraphisthatAbrahamLincoln______ThehabitofreflectionhelpedLincoln______
Thepersonwhocanseeashipwithoutsomefeelingofexcitementmusthaveverylittleimagination.Eventheideaofleavingthe
Thepersonwhocanseeashipwithoutsomefeelingofexcitementmusthaveverylittleimagination.Eventheideaofleavingthe
Thediscoveryoftheshipisimportanttostudentsofearlyshipsandtheirroutesbecause______.Archaeologistswereableto
"Quiteanumberofstudentsgaveexcellentanswerstomylastquestion,"saidtheprofessorinhis______onourperformanceinth
随机试题
首次明确提出执政党建设问题的会议是
转氨酶升高,ALT/AST<1,见于
特异性感觉投射系统的生理功能有()(2010年)
男性,42岁,活动多时常出现右腰部钝痛。尿常规检查:红细胞15~20个/HP,白细胞3~5个/HP。B超:右肾盂内可见3cm×2cm不规则形强回声,后伴声影。为明确诊断还需要进行的检查是
患者,男,38岁。发现血糖高5年,尿中有泡沫2个月。5年前查空腹血糖7.1mmol/L,餐后2小时血糖12.4mmol/L,无任何不适,未予诊治。视物模糊1年余。不伴尿路刺激征。无糖尿病家族史。提示:尿常规蛋白(++),红细胞0~3个/HP,24小时尿
A.语无伦次,笑骂不定B.语无伦次,神识不清,声高有力C.语言重复,声低断续D.语言错乱,错后自知E.自言自语,见人则止患者郑声时,可表现为
下列情形中,当事人主张诉讼时效抗辩,能够得到人民法院支持的是()。
纪律
在对待传统道德的问题上,要反对文化复古主义思潮。文化复古主义思潮认为
十月革命后列宁指出,“对俄国来说,根据书本争论社会主义纲领的时代已经过去了,我深信已经一去不复返了。今天只能根据经验来谈社会主义”。对这句话的正确理解是
最新回复
(
0
)