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
12
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] 【C17】
选项
A、resembling
B、alike
C、similar
D、identical
答案
D
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/2845105.html
相关试题推荐
Thethousandsofpeopleforcedtoabandontheirhomesinrecentweekstoflo
Thethousandsofpeopleforcedtoabandontheirhomesinrecentweekstoflo
Thethousandsofpeopleforcedtoabandontheirhomesinrecentweekstoflo
Inrecentyearsmanycountriesoftheworldhavebeenfacedwiththeproblem
Inrecentyearsmanycountriesoftheworldhavebeenfacedwiththeproblem
[originaltext]Inthelocalnewspaperofmycommunityrecentlytherewasas
[originaltext]Inthelocalnewspaperofmycommunityrecentlytherewasas
[originaltext]Inthelocalnewspaperofmycommunityrecentlytherewasas
[originaltext]Inthelocalnewspaperofmycommunityrecentlytherewasas
TherewereseveralreasonswhytheIndustrialRevolutionstartedinGreatBr
随机试题
Thedisastrousearthquakein2011causednationwidecasualtyandfinancialloss
WhatisthepurposeofProfessorMcKay’sreport?[br][originaltext]M:Today,w
Inthe1950s,thepioneersofartificialintelligence(Al)predictedthat,b
A.1/4 B.1 C.4 D.1/2
男性,80岁,患大叶性肺炎,持续高热1周,咳嗽,咳铁锈色痰,经治疗体温正常,但呼
社会实釋活动一般包括() A.社会生产劳动B.社会宣传和服务活动C.
有一毛石混凝土重力式挡土墙,如图所示。墙高为5.5m,墙顶宽度为l.2m,墙底宽
甲服装公司与乙银行订立合同,约定甲公司向乙银行借款300万元,用于购买进口面料。
注射用辅酶A属于A.混悬型注射剂 B.溶液型注射剂 C.溶胶型注射剂 D.
GPS的测量数据可以获得的最终结论是被测量位置的()。A.绝对高程 B.相对高
最新回复
(
0
)