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
44
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.
【36】
选项
A、skin
B、tissue
C、organ
D、muscle
答案
C
解析
根据常识,基因的研究者们能够采用诸如克隆和器官配置的技术,即C项organ“器官”符合习惯搭配。tissue“身体组织,肌肉组织”。
转载请注明原文地址:https://kaotiyun.com/show/vMDd777K
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
Agingbabyboomersaredeterminedtofighttheagingprocess.Theyspendmillionsofdollarsayearon【C1】________theyperceive
DoesthepublisherofDouglasStarr’sexcellentBlood—AnEpicHistoryofMedicineandCommerceactuallyexpecttosellmanycopi
TherecentsocialandeconomicchangesintheU.S.havegreatimpactonalltheAmericanhousingsystem.Unemploymentinhousi
Jewish独白第一句话即用ofJewishnationality(犹太民族)说明了基辛格的民族。注意nationality在此不是“国籍”,因为在Germany下面的Birthplace(出生地)一栏中出现了。另外,考生应注意表格中的信息顺序并不是材
AnAmericansenatorcriticizedTimeWarnerforInthefaceofrecentattacksonthecompany,Levin
Amultinationalcorporationisacorporateenterprise,whichthoughheadquarteredinonecountry,conductsitsoperationsthroug
Amultinationalcorporationisacorporateenterprise,whichthoughheadquarteredinonecountry,conductsitsoperationsthroug
NewfiguresfromFrance,GermanyandItaly--thethreebiggesteconomiesinthe12-countryEurozone-suggestthecontinent’sec
WhatisCathyfedupwith?______onpackingcases
随机试题
我国加入WTO以后,民族工业受到来自发达国家竞争对手的巨大冲击,各企业积极寻找应对措施。部分大型企业与中小型企业为了生存和发展,选择联合发展的道路,以应对强大的竞争对手,从而实现双赢。企业选择这种联合发展的道路体现出的经营战略特征是()
骨髓位于_______和_______内,分为_______和_______两类。
张某于2016年某大学药学专科毕业,毕业后选择到甲省乙药品批发企业,从事药品质量管理工作。张某可以参加哪一年的国家执业药师资格考试()
甲股份有限公司(以下简称“甲公司”)拟自建一条生产线,与该生产线建造相关的情况如下:(1)2020年1月2日,甲公司发行公司债券,专门用于筹集生产线建设资金。该公司债券为3年期分期付息、到期还本债券,面值为3000万元,票面年利率为5%,发行价格为306
尽管全球90%以上的节能灯在我国生产,但由于节能灯的价格是白炽灯的数倍,我国居民节能灯的使用率却不到20%,这不利于缓解我国电力供应紧张的局面。从材料看,缓解我国电力供应紧张局面需要()。①居民树立正确的消费理念②节能灯生产企业降低成本③政府倡导
下列激素属于HRF的是
刘女士在餐厅就餐时,左脸不幸被火锅烫伤。刘女士向餐厅索赔无果,遂提起民事诉讼。除要求餐厅赔偿治疗费外,她还主张精神损害赔偿。关于本案,下列说法正确的是()。(2014法单8)
Male-FemaleExpectationaboutMarriageThedifferencesbetweenmenandwomenclarifywhytheyhavedifferentexpectationsab
[A]Whattimeisitnow?[B]Howistheweathertoday?[C]WhatdoyouthinkofChina?[D]I’msure.[E]Ilikereadingbooks.[F]
Iaminchargeofwelcomingthe______.
最新回复
(
0
)