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
27
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
Maintainingclassroomdisciplineisagrowingproblemformanyschools.(46)Somechildrenseemincapableoffollowingtherules,
Latelysocialscientistshavebeguntoaskifcultureisfoundjustinhumans,orifsomeanimalshaveculturetoo.Whenwespea
Accordingtothetext,scholarsandstudentsaregreattravelersbecauseDevelopmentsininternationalcooperationareoften,i
Accordingtothetext,scholarsandstudentsaregreattravelersbecauseWhat,inthewriter’sopinion,happenstoascholarwh
Therecent,apparentlysuccessfulpredictionbymathematicalmodelsofanappearanceofElNino—thewarmoceancurrentthatperi
WhatkindofsocialformimmediatelyfollowedtheRomanRepublicAge?Whatdoestheword"patrician"meaninthesecondsentenc
Recentlegalresearchindicatedthatincorrectidentificationisamajorfactorinmanymiscarriagesofjustice.Italsosuggest
Recentlegalresearchindicatedthatincorrectidentificationisamajorfactorinmanymiscarriagesofjustice.Italsosuggest
Recentlegalresearchindicatedthatincorrectidentificationisamajorfactorinmanymiscarriagesofjustice.Italsosuggest
WhichofthefollowingisNOTtrue?______Thenewapproachtothesocialsecuritysystemwillspend______
随机试题
Muchoftheworldshouldgoonadietin2014.Morethanathirdofadults【C1】________wereestimatedtobe【C2】________orobesei
石英晶体多谐振荡器的频率稳定性比TTL与非门RC环形多谐振荡器的高。()
下列引起白细胞减少的疾病,发病机制不属于粒细胞破坏或消耗的是
患者,男性,60岁。肺心病,下肢水肿,口唇发绀,呈端坐呼吸,护理人员应特别注意观察患者病情变化。护理人员应重点观察患者的
关于自理报检单位的义务,以下表述正确的有( )。
保税区和出口加工区共同的功能是()。
案例一:小潘今年28岁,和女友相恋4年,两人计划今年买房,国庆期间结婚,待新房装修完毕后,年底即可搬入。他们经过多方对比,目前认为有两套房子比较合意。其中一套(甲)位于二环路附近,面积87平方米,价格9000元/平方米,可以办理两成首付,利用公积金贷款;另
中、小型电力变压器的器身不包括()。
[A]Allowvideowebsitestohelpyou[B]Learnfromfamousentrepreneurs[C]Masteratleastonehands-onskill[D]Bec
Мыприехалинавыставку____неделюпослеееоткрытия.
最新回复
(
0
)