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
65
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、so that
B、because
C、if
D、when
答案
A
解析
考查语法现象。so that引导结果、目的状语从句;because引导原因状语从句;if引导条件状语从句;when引导时间状语从句。上文中提到,某些人所谓的基因革命导致了遗传一致性的问题;后面的句子说,遗传学家可以利用像克隆和器官培育这样的技术,制造出完全相同的复制品。这说明后面的句子是表明一种结果,故选项A正确。
转载请注明原文地址:https://kaotiyun.com/show/GZZ4777K
0
考研英语一
相关试题推荐
Latelysocialscientistshavebeguntoaskifcultureisfoundjustinhumans,orifsomeanimalshaveculturetoo.Whenwespea
Oneoftheleastmentionedeffectsofchangerelatestohowitaffectsthemanagerleadingthatchange,andhisorherabilityt
(46)Technologyhasmadeiteasytocrossnationalfrontiersphysically,buttherehasbeennoinventionofnewmentalhabitsto
Thegoodnewsmadeheadlinesnationwide:Deathsfromseveralkindsofcancerhavedeclinedsignificantlyinrecentyears.Butth
Whichofthefollowingisthemostsuitabletitleforthetext?Whatdoesthewordeducationinthefirstparagraphmostprobab
Accordingtothetext,scholarsandstudentsaregreattravelersbecauseThewriterthinksthatacademicworkhasrecentlybeco
ThequestionwhichisdiscussedinthepassageisTheauthormentionsthe"socialmovement"(Lastparagraph)generatedbyChica
Recentlegalresearchindicatedthatincorrectidentificationisamajorfactorinmanymiscarriagesofjustice.Italsosuggest
Thepersonwhocanseeashipwithoutsomefeelingofexcitementmusthaveverylittleimagination.Eventheideaofleavingthe
Thepersonwhocanseeashipwithoutsomefeelingofexcitementmusthaveverylittleimagination.Eventheideaofleavingthe
随机试题
StanfordUniversityStanfordUniversityissometimescalled"theHarvardoftheWest".Thestudentsareenrolledmainlyfrom
下列关于心脏标志物应用原则的说法不正确的是
母体的免疫球蛋白能通过胎盘转移给胎儿的是
脑多头蚴的终末宿主为()
甲手机专卖店门口立有一块木板,上书“假一罚十”四个醒目大字。乙从该店购买了一部手机,后经有关部门鉴定,该手机属于假冒产品,乙遂要求甲履行其“假一罚十”的承诺。关于本案,下列哪一选项是正确的?()
过点(1,2,4)且与两平面x+2z+1=0,y一3z+3=0平行的直线方程为()。
海关于2007年4月17日(星期二)填发海关专用缴款书;为避免产生滞纳金,纳税义务人最迟缴纳税款的日期是()。
甲公司1月5日支付价款2500万元(其中包含支付的相关税费60万元)购入乙公司25%的股份,作为长期股权投资核算,对乙公司具有重大影响。乙公司当年实现净利润4000万元,当年12月31日宣告分派现金股利2500万元。甲公司因该长期股权投资影响当年利润
Nowomancanbetoorichortoothin.ThissayingoftenattributedtothelateDuchessofWindsorembodiesmuchoftheoddspiri
StephenKrashen’sTheoryofSecondLanguageAcquisitionStephenKrashenisanexpertinthefieldoflinguistics.Somepointsab
最新回复
(
0
)