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
2023-12-06
13
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] 【M6】
选项
答案
that—which
解析
句法错误。很显然,此分句应当是一个非限制性定语从句修饰前面所提到的意外变化,that不可以被用来引导非限制性定语从句,此处只能用which。
转载请注明原文地址:https://tihaiku.com/zcyy/3250725.html
相关试题推荐
AtraditionalfoodenjoyedbyAmericansduringThanksgivingDayis______.A、steam
Fromtheperspectiveoftraditionalapproachofsyntax,nounhasthecategories
ThetraditionaldividinglineinAmericabetween"east"and"west"is______.A、t
______describesasituationinwhichtwoverydifferentvarietiesoflanguageco
Nowadays,traditionalChineseculturalelementscouldbefoundinmanydiffe
Somepeoplethinkthatwiththedevelopmentoftechnology,ourtraditionalc
Phrasestructurerules,suchasS→NP+VP,derivefrom______grammar.A、traditional
Traditionalplantbreedinginvolvescrossedvarietiesofthe【M1】______same
Traditionalplantbreedinginvolvescrossedvarietiesofthe【M1】______same
Traditionalplantbreedinginvolvescrossedvarietiesofthe【M1】______same
随机试题
Inoursociety,wemustcommunicatewithpeople.Agreatdealofcommunicat
Theyear2005isthemidpointofadecadethatspansthreeunique,important
SpaceTourismA)Makeyourreservationsnow.Thespac
代表谷氨酸的符号是()。A.Gli B.Gly C.Gln D.Glu
2021年,全国规模以上工业原煤产量最低的月份在哪个季度?()A
建筑工人,20岁,3日前自高处跌下,背痛,双下肢不能活动。大小便不能自控。该病人
某家电连锁经营企业承诺为顾客提供商的的调换服务。这属于商品流通企业各项职能中的(
某单层商场,耐火等级为二级,总建筑面积为5000㎡,建筑内设置湿式自动喷水灭火系
学生的身心发展条件对课程的制约作用体现在( )A.课程设计目标 B.课程设置
出卖人就其出卖的标的物承担权利瑕疵担保义务,下列标的物的瑕疵,属于权利瑕疵的有(
最新回复
(
0
)