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
52
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] 【C2】
选项
A、got along with
B、given rise to
C、come up with
D、lived up to
答案
B
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2845090.html
相关试题推荐
Inrecentyearsmuchmoreemphasishasbeenputon______(培养学生的生产技能)developingth
Thepointoffactoryfarmingischeapmeat,madepossiblebyconfininglarge
Thepointoffactoryfarmingischeapmeat,madepossiblebyconfininglarge
Thepointoffactoryfarmingischeapmeat,madepossiblebyconfininglarge
Thepointoffactoryfarmingischeapmeat,madepossiblebyconfininglarge
Thepointoffactoryfarmingischeapmeat,madepossiblebyconfininglarge
Farewell,Libraries?Amazon,corn’srecentannounc
Farewell,Libraries?Amazon,corn’srecentannounc
Farewell,Libraries?Amazon,corn’srecentannounc
Farewell,Libraries?Amazon,corn’srecentannounc
随机试题
SCRIBBLE:WRITE::A、reflect:contemplateB、listen:overhearC、jot:doodleD、simper:
Ahigh-contextcultureisacultureinwhichthecontextofthemessageort
(1)Earlyinthefilm"ABeautifulMind",themathematicianJohnNashisseen
Thejudgmentthatcigarettesmokingis【B1】______tohealthistheresultof
假定甲公司向乙公司赊销产品,并持有丙公司债券和丁公司的股票。且向戊公司支付公司债
下列关于房屋面积测算的表述中,正确的有( )。A.房屋屋顶为斜面结构(坡屋项)
口服吸收慢、起效慢、半衰期长、易发生继续中毒的药物是A.甲基多巴B.氯沙坦C.盐
甲在家里打扫卫生,将一件旧大衣当垃圾扔掉。未发现妻子藏在口袋里的5000元钱。大
女,40岁。闭经、溢乳半年,磁共振发现垂体1.5cm×1.0cm占位病变,需做激
按照《工伤保险条例》规定,企业工伤保险应按照()计提保险费。A.职工人数 B
最新回复
(
0
)