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
In recent years a new farming revolution has begun, one that involves the 【21】______ of life at a fundamental level—the gene.
In recent years a new farming revolution has begun, one that involves the 【21】______ of life at a fundamental level—the gene.
admin
2010-07-06
37
问题
In recent years a new farming revolution has begun, one that involves the 【21】______ of life at a fundamental level—the gene. The study of genetics has 【22】______ a new industry called biotechnology. As the name suggest, it 【23】______ biology and modem technology through such techniques as genetic engineering. Some of the new biotech companies specialize in agriculture and are working feverishly to 【24】______ seeds that give a high yield, that 【25】______ diseases, drought and frost, and that reduce the need for 【26】______ chemicals. If such goals could be achieved, it would be most 【27】______ . But some have raised concerns about genetically engineered crops.
In nature, genetic diversity is created within certain 【28】______ . A rose can be crossed with a different kind of rose, but a rose will never cross with a potato. Genetic engineering, 【29】______ usually involves taking genes from one species and inserting them into another 【30】______ to transfer a desired Characteristic. This could mean, for example, selecting a gene which leads to the production of a chemical with antifreeze 【31】______ from an artic fish, and inserting it into a potato or strawberry to make it frost-resistant. 【32】______ , then, biotechnology allows humans to 【33】______ the genetic walls that separate species.
Like the green revolution, 【34】______ some call the gene revolution contributes to the problem of genetic uniformity—some say even more so 【35】______ geneticists can employ techniques such as cloning and 【36】______ culture(培养), processes that produce perfectly 【37】______ copies. Concerns about the erosion of biodiversity, therefore, remain. Genetically altered plants, however, raise new 【38】______ , such as the effects that they may have on us and the environment. "We are flying blindly into a 【39】______ of agricultural biotechnology with high hopes, few constraints, and little idea of the potential 【40】______ ," said science writer Jeremy Rifkin.
【22】
选项
A、got along with
B、given rise to
C、come up with
D、lived up to
答案
B
解析
根据句子的逻辑关系:“这场基因项目的研究已经引起了……”,即B项 give rise to“引起……,产生”符合句意。come up with “找出或提出答案、办法等”。live up to 符合某事物的原则。
转载请注明原文地址:https://kaotiyun.com/show/z0Dd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Whatisthefirstjobthemanappliedforrightafterhisuniversitygraduation?Whatarethelocalpoliticiansmostlyconcerne
ThespeakerthinksthattobeateacherismoredifficultthantobethepresidentoftheNEA.Thespeakerwantstochangethe
ThespeakerthinksthattobeateacherismoredifficultthantobethepresidentoftheNEA.Thespeaker’sfirstteachingass
HowhavetheoncereasonablypricedholidaysinEuropebecometoAmericans?HowarepartofthedollarsthatChinaaccumulates
TherecentsocialandeconomicchangesintheU.S.havegreatimpactonalltheAmericanhousingsystem.Mobilehousesarebui
TherecentsocialandeconomicchangesintheU.S.havegreatimpactonalltheAmericanhousingsystem.Peopleformcooperati
Therehasbeenadiscussionrecentlyontheissueofchallengeinanewspaper.Somepeoplethinkchallengeisakindofimpetus,
NewfiguresfromFrance,GermanyandItaly--thethreebiggesteconomiesinthe12-countryEurozone-suggestthecontinent’sec
WhatisCathyfedupwith?______onpackingcases
随机试题
可用集中参数分析的波段是()。
PC属于下列哪类物质
某企业准备5年后进行设备更新,到时所需资金估计为600万一,若存款利率为5%,从现在开始每年年末均等额存款,则每年应存款()。[己知:(A/F,5%,5)=0.18097]
下列各项中,属于汇总记账凭证账务处理程序优点的有()。
下列关于代理建账记账业务的说法,符合有关规定的是()。
工程师来自业主的风险主要产生的原因有()。
效率是衡量管理()的标准。
某化工厂将废水直接排入河道,流入张某的鱼塘,造成绝大部分鱼死亡,该厂承认其侵权,但不能接受张某提出的赔偿数额。对此,下列哪一表述是不正确的?()
一组数据的平均数是100,标准差是25,这组数据的变异系数是()
阅读下面短文。回答问题偏见可以说是思想的放假。它是没有思想的人的家常日用,而是有思想的人的星期日娱乐。假如我们不能怀挟偏见,随时随地必须得客观公平、正经严肃,那就像造屋只有客厅,没有卧室。又好比在浴室里照镜子还得做出摄影机头前的姿态。魔鬼在但丁《
最新回复
(
0
)