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
26
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
______youarewellagain,youcantakechargeoftheworkyourself.A、AlthoughB
A——accountbookB——goldreserveC——incomeandexpenditureD——cashon
Noonetodayneedfeardangerousmaterialsinlipsticks.AstudybyaleadingGe
The(discover)______ofradiumhashelpedmanypeople.discovery
Menaremuch"smarter"thanwomenwhenitcomestoshopping,accordingtoa
下列各类车库建筑中,土建工程单方造价最低的是:()A.石材砌体结构车库 B
患儿,女,13个月,因"发热2天,呕吐1天,尿少伴精神差6小时"来诊。既往体健。
著名法学家沈家本曾评论:“国不可无法,有法而不善与无法等。”下列可以代替该评论的
同一投资组合在同一交易日内可以进行反向交易。()
下列不属于证券经纪业务技术风险的是()。A:交收失误B:通信设施发生技术故障
最新回复
(
0
)