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
外语
Genetic engineering, the process of splicing (连接) together DNA from different organisms to create a preferred type of plant o
Genetic engineering, the process of splicing (连接) together DNA from different organisms to create a preferred type of plant o
admin
2010-06-11
37
问题
Genetic engineering, the process of splicing (连接)
together DNA from different organisms to create a preferred
type of plant or animal, is a relatively new development
in agriculture. The first successful experiment
was achieved in 1973. Despite of its recent emergence, 【S1】______
however, genetic engineering--particularly in the area of
agriculture--has proliferated swiftly. Few Americans can
now avoid genetically altered food altogether, but it’s 【S2】______
estimated that modified ingredients are present in about two-thirds
of the foods in American supermarkets.
Supporters of genetic engineering have argued that
this application of science allows farmers to grow crops
more efficiently and to save money on pesticides and fertilizers.
Fewer chemicals, they say, will be benefit for 【S3】______
the environment and reduce health risks for farm workers.
Opponents of genetic engineering make the claim
that scientists are tampering (损害) with matters that
they know too little and essentially committing a crime 【S4】______
against nature. It’s impossible, they maintain, for people
to see the possible consequences that genetic engineering 【S5】______
could wreak (带来) on the environment and on the
health of human beings. 【S6】______
Greenpeace activists objected on farmers’ use of corn
that had been genetically modified to resist corn borers
(玉米螟)--pests that were costing farmers up to a billion 【S7】______
dollars a year in mined crops. No one admitted that
the genetic change had benefited the corn plants. But
how would it impact upon the rest of the environment?
Studies variously supported both sides of the argument 【S8】______
, and thus proved conclusive. However, the protest
cut to the heart of the genetic engineering controversy by 【S9】______
demonstrating what unprepared both the scientists and
their opponents were to gauge (测量, 评估) the long-term
effects of introducing changes into living beings.
Perhaps, like most forms of technological innovation, genetic
engineering will come to display both its benefits 【S10】______
and obvious drawbacks--many of which will be so apparent
until mankind has pursued the experiment for some
time.
【S2】
选项
答案
but→as
解析
转载请注明原文地址:https://kaotiyun.com/show/8CKK777K
0
大学英语六级
相关试题推荐
A、Indreamswesolvethoseproblems.B、Afterdreamingweforgetourproblems.C、Afterdreamingwehaveaclearmind.D、Itgives
A、Byattendingaclass.B、Fromherparents.C、Throughagardeningmagazine.D、Fromherneighbors.AHowdidShirleylearnabouts
Forwelloveracentury,onestreetinNewYorkCityhasbeenknownfortheheartoftheAmericantheater.The【S1】__
A、Traininggiventomusictherapists.B、Howmusicpreventsdisease.C、Studiesonthebenefitsofmusic.D、Howmusicianscreatem
A、Itisbasedonalotofresearch.B、Itcanbefinishedinafewweekstime.C、Ithasdrawncriticismfromlotsofpeople.D、It
ThereisnothingnewaboutTVandfashionmagazinesgivinggirlsunhealthyideasabouthowthintheyneedtobeinordertobec
What’stheopinionofeconomistsaboutgoingtocollege?Whatisthechiefconsiderationwhenstudentschooseacollegetoday?
A、Becausetheycanflyveryhigh.B、Becausetheycancarrylargerfreightoverwithinashortertime.C、Becausetheyarethenew
A、Hisbrother.B、Hismanager.C、Hisfather.D、Abusinesswoman.D
A、Anapartmentbuilding.B、Astadium.C、Atheater.D、Arace-track.C
随机试题
WhyYourNameMatters?A)In1948,twoprofessorsatHarvardUniversitypublishedastudyofthirty-threehundredmenwhoh
此病例最大可能是( )为明确诊断应行的检查是( )
某女,25岁。因腹痛、腹泻,伴发热盗汗2个月就诊,经检查诊断为肠结核,给予药物治疗一段时间后,患者出现视神经炎,可能是下列哪种药物所致
A和B两药竞争性与血浆蛋白结合,单用A药t1/2为3小时,两药合用后t1/2是
背景某市政工程,合同总工期为10个月,施工单位根据施工方案绘制网络计划图如下(单位为月):问题根据网络计划图计算工期,并判断是否满足合同工期要求?
火灾自动报警系统的组成部分包含()。
如果一个客户性格属于常常改变主意或离题,有丰富的想象力,在做决定的时候有新思路并付诸行动,则根据荣格的心理分析模型,该客户属于()。[2009年11月二级、三级真题]
用他人的良好行为来启发、激励学生的方法称为高校思想政治教育的说理启迪法。()
服务群众的落脚点是()。
A、Six-year-old.B、Sevenyear-old.C、Eight-year-old.D、Nine-year-old.C文中提到Bythetimehewaseight,youwouldn’tknowhehadap
最新回复
(
0
)