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【B1】______of life at a fundamental level—the gene. The
In recent years a new farming revolution has begun, one that involves the【B1】______of life at a fundamental level—the gene. The
admin
2018-04-27
43
问题
In recent years a new farming revolution has begun, one that involves the【B1】______of life at a fundamental level—the gene. The study of genetics has 【B2】______ a new industry called biotechnology. As the name suggest, it【B3】______biology and modem technology through such techniques as genetic engineering. Some of the new biotech companies specialize in agriculture and are working feverishly to 【B4】______ seeds that give a high yield, that 【B5】______ diseases, drought and frost, and that reduce the need for 【B6】______ chemicals. If such goals could be achieved, it would be most【B7】______. But some have raised concerns about genetically engineered crops.
In nature, genetic diversity is created within certain 【B8】______. A rose can be crossed with a different kind of rose, but a rose will never cross with a potato. Genetic engineering, 【B9】______ usually involves taking genes from one species and inserting them into another【B10】______to transfer a desired characteristic. This could mean, for example, selecting a gene which leads to the production of a chemical with anti-freeze 【B11】______ from an artic fish, and inserting it into a potato or strawberry to make it frost-resistant.【B12】______, then, biotechnology allows humans to【B13】______the genetic walls that separate species.
Like the green revolution,【B14】______some call the gene revolution contributes to the problem of genetic uniformity—some say even more so【B15】______geneticists can employ techniques such as cloning and 【B16】______ culture, processes that produce perfectly【B17】______copies. Concerns about the erosion of biodiversity, therefore, remain. Genetically altered plants, however, raise new【B18】______,such as the effects that they may have on us and the environment. "We are flying blindly into a new【B19】______of agricultural biotechnology with high hopes, few constraints, and little idea of the potential【B20】______," said science writer Jeremy Rifkin.
【B18】
选项
A、issues
B、height
C、difficulties
D、goals
答案
A
解析
考查名词辨析。所填词与raise搭配,而且是后面提到的the effects的上义词,符合这两个条件的只有选项issues“问题,论点”,raise new issues表示“提出了新的问题”。height“高度”,difficulties“困难”,goals“目标”.语义与搭配均不正确。故选A。
转载请注明原文地址:https://kaotiyun.com/show/BI6Z777K
0
考研英语一
相关试题推荐
Advancingagemeanslosingyourhair,yourwaistlineandyourmemory,right?DanaDenisisjust40yearsold,but【C1】______she’
Advancingagemeanslosingyourhair,yourwaistlineandyourmemory,right?DanaDenisisjust40yearsold,but【C1】______she’
Peoplehavebeenholdingheateddiscussionsrecentlyaboutwomen’sexperienceintheworkplace.LastmonthSherylSandberg,chie
Peoplehavebeenholdingheateddiscussionsrecentlyaboutwomen’sexperienceintheworkplace.LastmonthSherylSandberg,chie
Peoplehavebeenholdingheateddiscussionsrecentlyaboutwomen’sexperienceintheworkplace.LastmonthSherylSandberg,chie
Brandsarebasicallyapromise.Theytellconsumerswhatqualitytoexpectfroma【C1】______andshowoffitspersonality.Firmsi
Brandsarebasicallyapromise.Theytellconsumerswhatqualitytoexpectfroma【C1】______andshowoffitspersonality.Firmsi
Brandsarebasicallyapromise.Theytellconsumerswhatqualitytoexpectfroma【C1】______andshowoffitspersonality.Firmsi
Brandsarebasicallyapromise.Theytellconsumerswhatqualitytoexpectfroma【C1】______andshowoffitspersonality.Firmsi
Brandsarebasicallyapromise.Theytellconsumerswhatqualitytoexpectfroma【C1】______andshowoffitspersonality.Firmsi
随机试题
大黄廑虫丸的所用的虫类药物不包括
属于伤寒患者解除隔离主要标准的是
A.HLA-DQB.HLA-DPC.HLA-DRD.HLA-AE.ABO血型患者女,30岁。肾功能不全,需行肾移植术,做组织相容性抗原配型时,最重要的抗原是
巴比妥类药物有重金属离子反应是由于分子中具有丙二酰脲结构。()
情景分析中的情景()。Ⅰ.可以从对市场风险要素的历史数据变动的统计分析中得到Ⅱ.不能人为设定Ⅲ.可以直接使用历史上发生过的情景Ⅳ.包括基准情景、最好的情景和最坏的情景
某企业为增值税一般纳税人,增值税税率为17%。本月销售一批材料,价值6084元。该批材料计划成本为4200元,材料成本差异率为2%,该企业销售材料应确认的损益为()元。
声音的共鸣理论是由谁提出的?()l
【H1】【H15】
A.afractionofaninchB.thecreationofnewentitiesC.thesameamountofmassD.thetiniestparticleE.anexplosionofh
A、Annoyingandmean.B、Kindandfriendly.C、Intelligentbutmean.D、Intelligentbutannoying.D对话中女士提到Graceissoannoying,男士听后说
最新回复
(
0
)