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. T
In recent years a new farming revolution has begun, one that involves the 【B1】______ of life at a fundamental level--the gene. T
admin
2005-07-06
97
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 suggests, It 【B3】______ biology and modern 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 wails 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 (培养), 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.
选项
A、manufacture
B、management
C、manipulation
D、maturity
答案
C
解析
需填入manipulation,表示“控制生命”。
转载请注明原文地址:https://kaotiyun.com/show/Axmi777K
0
在职申硕(同等学力)英语
相关试题推荐
A.眩晕B.上肢放射痛C.双下肢无力D.排尿困难椎动脉型颈椎病
What’syourearliestchildhoodmemory?Canyourememberlearningtowalk?Ortalk?Thefirsttimeyou【C1】______thunderorwatche
Thewordscienceisheardsoofteninmoderntimesthatalmosteverybodyhassomenotionofitsmeaning.Ontheotherhand,its
Learningdisabilitiesareverycommon.Theyaffectperhaps10percentofallchildren.Fourtimesasmanyboysasgirlshavelea
Thewriterappliedforthejobbecause______Whatwasthewriter’sopinionofthepsychologist?
Thelegislativeprovisionhasagreatimpactontheoperationsofthedepartment.
Herstoryshowshowgentlestubbornnessandanindifferencetohonorsandfamecanleadtogreatachievements.
BeautycontestsinBritainarenow______Thebesttitleforthepassagemightbe______
Whatismostremarkableabouttheproposalmadebythetwoscientists?Whichofthefollowingcanbestdescribetheattitudeof
随机试题
强度钢的强度等级越高,其焊接性越好。()
小儿缺铁性贫血的治疗原则是
下列对房地产市场的特点说法正确的是()。
梁整体失稳的方式是()
将二进制小数0.1010101111转换成相应的八进制数,其正确结果是()。
关于企业合并中所涉及的或有对价,下列说法中不正确的是()。
哪一种教学方法能更好地培养学生的主动探究精神与终身学习习惯()
(2016·河南)高级神经活动类型中“强—平衡一不灵活”类型与()气质类型相对应。(常考)
英国人类学家特纳认为,正常的“社会结构”是一种有阶层、地位、贫富差别的体制,“反结构”是没有等级之分、贫富之别、男女之别的时空,具有消除不满和发泄情绪的功能,很多重要节庆仪式就是属于“反结构”。中国古代元宵节是全民的狂欢节。在节日期间,人人尽兴而乐,可以缓
A、 B、 C、 D、 A
最新回复
(
0
)