首页
登录
职称英语
In recent years a new farming revolution has begun, one that involves the【C1
In recent years a new farming revolution has begun, one that involves the【C1
游客
2023-07-17
22
管理
问题
In recent years a new farming revolution has begun, one that involves the【C1】______of life at a fundamental level--the gene. The study of genetics has【C2】______a new industry called biotechnology. As the name suggest, it【C3】______biology and modern technology through such techniques as genetic engineering. Some of the new biotech companies specialize in agriculture and are working feverishly to【C4】______seeds that give a high yield, that【C5】______diseases, drought and frost, and that reduce the need for【C6】______chemicals. If such goals could be achieved, it would be most【C7】______. But some have raised concerns about genetically engineered crops.
In nature, genetic diversity is created within certain【C8】______. A rose can be crossed with different kind of rose, but a rose will never cross with a potato. Genetic engineering,【C9】______usually involves taking genes from one species and inserting them into another【C10】______to transfer a desired characteristic. This could mean, for example, selecting a gene which leads to a production of a chemical with anti-freeze【C11】______from an arctic fish, and inserting it into a potato or strawberry to make it frost-resistant.【C12】______, then, biotechnology allows humans to【C13】______the genetic walls that separate species.
Like the green revolution,【C14】______some call the gene revolution contributes to the problem of genetic uniformity--some say even more so【C15】______geneticists can employ techniques such as cloning and【C16】______culture (培养), processes that produce perfectly【C17】______copies. Concerns about the erosion of biodiversity, therefore, remain. Genetically altered plants, however, raise new【C18】______such as the effects that they may have on us and the environment. "We are flying blindly into a new【C19】______of agricultural biotechnology with high hopes, few constraints, and little idea of the potential【C20】______," said science writer Jeremy Rifkin. [br] 【C6】
选项
A、hostile
B、hydraulic
C、hazardous
D、harmless
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2845094.html
相关试题推荐
Thepointoffactoryfarmingischeapmeat,madepossiblebyconfininglarge
Thepointoffactoryfarmingischeapmeat,madepossiblebyconfininglarge
Thepointoffactoryfarmingischeapmeat,madepossiblebyconfininglarge
Thepointoffactoryfarmingischeapmeat,madepossiblebyconfininglarge
Thepointoffactoryfarmingischeapmeat,madepossiblebyconfininglarge
Thepointoffactoryfarmingischeapmeat,madepossiblebyconfininglarge
Inadditiontovisibletrade,whichinvolvestheimportandexportofmercha
Inadditiontovisibletrade,whichinvolvestheimportandexportofmercha
Inadditiontovisibletrade,whichinvolvestheimportandexportofmercha
Inadditiontovisibletrade,whichinvolvestheimportandexportofmercha
随机试题
BenBuchananandAMagicBookTheTexasteenisdevouri
Forthispart,youareallowed30minutestowriteashortessayentitledShould
HowtoLovetheWorldAsItIs?[A]Itstruckmerecentlythatalotofp
[originaltext]Akeycomponentintheexplosivesusedinlastweek’sLondonb
WhoLives?WhoDies?WhoDecides?A)SomehavecalleditaRi
既能收敛止血,又能活血祛瘀.利尿的药物是A.蒲黄 B.茜草 C.大蓟 D.
当欢送患者出院时,护士使用下列哪种语言不妥A.请按时服药 B.请多保重 C.
下列火灾中,不适合采用细水雾灭火系统进行灭火的是()。A.汽油火灾 B.可
包衣的目的不包括A.掩盖药物的不良气味 B.防潮、避光 C.加快药物的溶出速
上市公司董事会通过股票股利分配方案时,财会部门应将拟分配的股票股利确认为负债。(
最新回复
(
0
)