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
62
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、skin
B、tissue
C、organ
D、muscle
答案
C
解析
考查词义辨析与上下文的逻辑关系。skin意为“皮肤”;tissue意为“组织”,指身体组织、肌肉组织等;organ意为“器官”;muscle意为“肌肉”。上文中提到了cloning,并且所填的词与culture(培育)搭配,故只有选项C正确。
转载请注明原文地址:https://kaotiyun.com/show/LZZ4777K
0
考研英语一
相关试题推荐
(46)Technologyhasmadeiteasytocrossnationalfrontiersphysically,buttherehasbeennoinventionofnewmentalhabitsto
Howmanyreallysufferasaresultoflabormarketproblems?Thisisoneofthemostcriticalyetcontentioussocialpolicyques
Therecent,apparentlysuccessfulpredictionbymathematicalmodelsofanappearanceofElNino—thewarmoceancurrentthatperi
WhatkindofsocialformimmediatelyfollowedtheRomanRepublicAge?Inthelastparagraph,Romanexpansionwasdescribedvivi
Recentlegalresearchindicatedthatincorrectidentificationisamajorfactorinmanymiscarriagesofjustice.Italsosuggest
Nationalcharacteristicsarenoteasytopindown,andwhenpinneddowntheyoftenturnouttobetrivialitiesorseemtohaven
Thepersonwhocanseeashipwithoutsomefeelingofexcitementmusthaveverylittleimagination.Eventheideaofleavingthe
Thepersonwhocanseeashipwithoutsomefeelingofexcitementmusthaveverylittleimagination.Eventheideaofleavingthe
Thediscoveryoftheshipisimportanttostudentsofearlyshipsandtheirroutesbecause______.WhenwasthewreckofKyreni
随机试题
PassageFourWhatisthemainimplicationoftheresearchatDukeUniversity?
A.末梢型B.神经根型C.内囊型D.脑干型E.皮质型
病毒可通过以下哪种途径在体内传播
甲企业拥有某产品的专利技术使用权,该专利技术产品单位市场售价为1000元/台,比普通同类产品单位售价高出100元/台。预计甲企业的年生产能力为10000台,每台可以获得增量利润80元。预计甲企业利用该专利技术使用权持续获取增量利润的时间是10年,折现率10
中国公民张某2009年12月5日取得2009年11月份工资2000元,2009年全年一次性不含税奖金收入25000元,张某就此两项所得应缴纳的个人所得税为()元。
职责分工控制是指对于企业内部______,必须进行分工负责,不能由一人同时兼任。
阅读材料并结合背景知识回答问题: 材料唐制,取士之科,多因隋旧,然其大要有三。由学馆者日生徒,由州县者日乡贡,皆升于有司而进退之。其科之目,有秀才,有明经,有俊士,有进士,有明法,有明字,有明算,有一史,有三史,有开元礼,有道举,有童子。而明经之别,有五
人们在设计调查问卷时通常仅注意问题的设计,而往往忽略语言设计可能出现的各种问题(如语境、语言的歧义等)。最新研究结果确认:这些语言设计方面的问题对调查的结果可以产生十分重要的影响。假设被调查者都能如实回答问卷。则以下哪项结论可能从上述断定中推出?
以下关于“查询”的描述正确的是()。
Soviet’sNewWorkingWeekHistorianinvestigateshowStalinchangedthecalendartokeeptheSovietpeoplecontinuallyatwork.
最新回复
(
0
)