首页
登录
职称英语
Traditional plant breeding involves crossed varieties of the 【M1】______same
Traditional plant breeding involves crossed varieties of the 【M1】______same
游客
2024-11-29
33
管理
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. [br] 【M7】
选项
答案
∧gene—the
解析
冠词使用错误。本处的gene一词并非泛指的抽象概念,而是特指控制人类智力的那种基因,因此应该用定冠词the。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3865286.html
相关试题推荐
Traditionalplantbreedinginvolvescrossedvarietiesofthe【M1】______same
Traditionalplantbreedinginvolvescrossedvarietiesofthe【M1】______same
Traditionalplantbreedinginvolvescrossedvarietiesofthe【M1】______same
WhichofthefollowingisNOToneoftheLondon’straditionalsights?A、BigBenB
Languagevarietiesthatareappropriateforuseinparticularspeechsituations
Somepeoplethinkthatwiththedevelopmentoftechnology,ourtraditionalc
ThetraditionaldividinglineinAmericabetween"east"and"west"isA、theMissi
Thetotalityoflinguisticvarietiespossessedbyanindividuallanguageuserco
Thesituationwheretwoverydifferentvarietiesofthesamelanguageareuseds
Varietiesofyellowgrapesthathavetenderskin,richflavorandhighsugarcon
随机试题
WhyWeDon’tLikeEnglishClassesI.People’s【T1】______of
Jerryseldomcametothelaboratory,______he?A、didheB、didn’theC、doeshimD
测试火灾自动报警系统联动功能时应注意()。A.测试前通知相关人员,以免引起不必要
伤寒患者的典型表现有:A.肝脾大 B.玫瑰疹 C.白细胞数减少 D.相对缓
2005年2月,某轮船上发生原因不明肺炎的暴发流行。出港时船上共有350名乘客,
下列对于回购协议的说法中,正确的是( )。 Ⅰ在交易期间,对于质押式回购,质
A.解热、抗炎作用B.抗病原微生物作用C.保肝利胆作用D.镇静镇痛作用E.增强免
患儿男,5个月,混合喂养,腹泻2个月,大便5~6次/天,稀或糊状便,无脓血,食欲
牙骨质龋属于A:慢性龋 B:浅龋 C:中龋 D:深龋 E:继发龋
在通风工程中,利用声波通道截面的突变,使沿管道传递的某些特定频段的声波反射回声源
最新回复
(
0
)