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
Traditional plant breeding involves crossed varieties of the 【M1】______ same species in ways they could cross naturally. For exa
Traditional plant breeding involves crossed varieties of the 【M1】______ same species in ways they could cross naturally. For exa
admin
2015-02-17
44
问题
Traditional plant breeding involves crossed varieties of the 【M1】______
same species in ways they could cross naturally. For example,
disease-resistant varieties of wheat have been crossed with
highly-yield wheat to combine these properties. This type of 【M2】______
natural gene exchange is safe and fairly unpredictable. 【M3】______
Genetic engineering(GE)involves exchanging genes between
unrelated species that cannot naturally exchange genes with each
other. GE can involve the exchange of genes between vastly
different species, e. g. putting scorpion toxin genes into maize or
fish antifreeze genes into tomatoes. It is possible that a scorpion
toxin gene, even when it is in maize DNA, will still get the
organism to produce scorpion toxin — but what other effects may 【M4】______
have on this alien environment? We are already seeing this 【M5】______
problem — adding human growth hormone genes to pigs certainly
makes them grow — but it also gives them arthritis and makes them
cross-eyed, that was entirely unpredictable. 【M6】______
It will be obvious, for example, that gene for human 【M7】______
intelligence will not have the same effect if inserted into cabbage as 【M8】______
it had in human DNA — but what side-effect would it have? In
other word, is GM(Genetically Modified)food safe to eat? The 【M9】______
answer is that nobody knows because long-term tests have not been
carried out.
The current position of the UK Government is that "There is
no evidence of long-term dangers from GM food." In the US, the 【M10】______
American Food and Drug Administration is currently being
prosecuted for covering up research that suggested possible risks
from GM foods.
【M10】
选项
答案
food—foods
解析
单复数错误。这里的转基因食物并非抽象指代,而是指众多此类食物,因此food应该作可数名词用,加上s。
转载请注明原文地址:https://kaotiyun.com/show/hOdO777K
0
专业英语八级
相关试题推荐
Itwasnotsolongagothatparentsdroveateenagertocampus,saidatearfulgoodbyeandreturnedbackhometo【M1】______wait
Poetrydoesn’tmattertomostpeople.Onehastowonderifpoetryhasanyplaceinthe21stcentury,whenmusicvideosandsat
Schoolsthroughouttheworldareexperiencingaperiodofrapidchangeand,inmanycases,arefindingthatextremely【M1】______
Formany,thepursuitofhappinessisalsothepursuitofprosperity.PartoftheAmericandreamistheabilitytoprovide【M1】__
Therearemoredrugsdispensedforpainthanforanyotherdiseaseonthisplanet.Drugcompaniesenjoyearninghugeprofitsf
Amongalmostsevenhundredspeciesofbamboo,somearefullygrownatlessthanafoothigh,whileothercangrowthreefeetin
WhichofthefollowingstatementsaboutthenewcensorisINCORRECT?
______isthelongestriverinBritain.
Dreiser’sTrilogyofDesireincludesthreenovels.TheyareTheFinancier,TheTitanand
随机试题
历史研究法
引起Ⅰ型呼吸衰竭的常见病因是
脑血栓形成急性期的有效治疗方法是()
下列选项中,属于右淋巴导管收受范围的是()
钢筋牌号HRB335中335指钢筋的极限强度。()
某项目中建筑安装工程费用为1760万元,设备工器具费用为850万元,工程建设其他费用为260万元,基本预备费为287万元,涨价预备费为150万元,建设期贷款利息为180万元,不考虑固定资产投资方向调节税,则静态投资部分是()万元。
在外汇风险中,最常见而又最重要的是()。
若DX=0.004,利用切比雪夫不等式估计概率P{|X-EX|<0.2}.
设有关键码序列(66,13,5l,76,8l,26,57,69,23),要按关键码值递增的次序排序,若采用快速排序法,并以第一个元素为划分的基准,那么第一趟划分后的结果为()。
Thepackingsareingoodorder.
最新回复
(
0
)