The study of genetics has given rise to a profitable new industry called biotechnology. As the name (1), it combines biology and modem technology through such (2 ) as genetic engineering. Some of the new biotech companies, as they are called, (3 ) in agriculture and are working enthusiastically to patent (取得专利)seeds that give a high yield (产量),that (4 ) disease, drought and frost, and that reduce the need for dangerous chemicals. (5 )such goals could be achieved, it would be most beneficial. But some have raised (6 ) about genetically engineered crops. “In nature, genetic diversity (多样性)is created within certain limits,” says the book Genetic Engineering, Food and Our Environment. “A rose can be crossed (杂交)with a different kind of rose, but a rose will (7 )cross with a potato... ’’ Genetic engineering, on the other hand, usually involves taking genes from one species and inserting them into another in an attempt to (8 ) a desired property or character. This could mean, (9 ), selecting a gene which leads to the production of a chemical with antifreeze properties from an arctic fish, and joining it into a potato or strawberry to make it frost-resistant. It is now possible for plants to be engineered with genes(10 ) from bacteria, viruses, insects, animals or even humans. (11 ), then, biotechnology allows humans to break the genetic walls that(12 ) species.
Like the green revolution, (13 ) some call the gene revolution(14 ) to the problem of genetic uniformity (千篇一律)- some say even more so (15 ) geneticists can employ techniques such (16 )cloning and organ culture, processes that produce perfectly(17) copies, or clones. Concerns about the biodiversity, therefore, remain. Genetically altered plants, however, raise new(18 ), such as the effects that they may have on us and the environment. “We are flying blindly into a new (19 ) of agricultural biotechnology with high hopes, few constraints, and little idea of the potential(20),” said science writer Jeremy Rifkin.
问题1选项
A.suggests
B.recalls
C.concerns
D.advises
问题2选项
A.concepts
B.views
C.techniques
D.courses
问题3选项
A.participate
B.focus
C.specialize
D.involve
问题4选项
A.treat
B.avoid
C.oppose
D.resist
问题5选项
A.If
B.Unless
C.Since
D.As
问题6选项
A.demands
B.topics
C.concerns
D.lessons
问题7选项
A.sometimes
B.never
C.frequently
D.eventually
问题8选项
A.convey
B.transfer
C.select
D.collect
问题9选项
A.for example
B.for one thing
C.on one hand
D.in any case
问题10选项
A.resulted
B.evolved
C.injected
D.taken
问题11选项
A.In contrast
B.In that
C.In case
D.In essence
问题12选项
A.separate
B.form
C.create
D.vary
问题13选项
A.what
B.where
C.as
D.so
问题14选项
A.combines
B.contributes
C.commands
D.breaks
问题15选项
A.that
B.because
C.if
D.when
问题16选项
A.like
B.for example
C.as
D.is
问题17选项
A.resembling
B.alike
C.similar
D.identical
问题18选项
A.issues
B.height
C.difficulties
D.goals
问题19选项
A.spot
B.era
C.deadline
D.scheme
问题20选项
A.navigations
B.mystery
C.outcomes
D.destinations
第1题:A
第2题:C
第3题:C
第4题:D
第5题:A
第6题:C
第7题:B
第8题:B
第9题:A
第10题:D
第11题:C
第12题:A
第13题:A
第14题:B
第15题:B
第16题:C
第17题:D
第18题:A
第19题:B
第20题:C
(1)动词词义辨析。根据文章第一句,可知the name 指代第一句中的biotechnology,所以这个名字暗示了它是生物和现代技术的结合,选项A符合题意。
(2)查上下文语义。根据上文,such指代前面提到的生物和现代技术,所以只有technique技术能概括前面的信息,选项C符合题意。
(3)动词词组辨析。participate in “参加,分享”;focus on “集中于”;specialize in “专门研究 ”;involve in “参与,涉及”。句意:一些新的生物科技公司,专门研究农业方面的问题。选项C符合题意。
(4)动词词义辨析。Treat “治疗,对待”;avoid “避免”;oppose “反对,对抗”;resist “抵抗”。句意:能够抵抗干旱、疾病和霜冻,并且减少对化学用品需求的种子。选项D符合题意。
(5)逻辑关系。空格的这句和下一句应该是假设关系,if引导条件状语从句,句意:如果这些目标能够实现,那么将会是最大的好处。选项A符合题意。
(6)固定搭配。concern about “对……担心”,句意:一些人对转基因农作物越来越担心。选项C符合题意。
(7)考查上下文语义。上文提到基因多样性是在特定范围内创建的,“A rose can be crossed (杂交)with a different kind of rose”,玫瑰可以和其他不同种类的玫瑰杂交,后面空格应该是表示转折,句意:但是玫瑰不能和土豆杂交。选项B符合题意。
(8)动词词义辨析。convey “运达,传输”; transfer “转移”;select “选择”; collect “收集”。句意:从一种物种上获取基因,然后将其植入到另一物种中,尝试转移一种希望得到的特性。选项B符合题意。
(9)考查上下文语义。根据上下文,用北极鱼防冻基因植入草莓土豆,使其也具有防冻特性的例子来说明了基因转移的过程。选项A符合题意。
(10)动词词组辨析。resulted from “起因于”;evolved from “演变而来”;injected from “从……注射”;taken from “从……取出”。句意:现在用从病毒、细菌、昆虫、动物乃至人体中提取的基因来改造植物是可能的。选项D符合题意。
(11)词组辨析。in contrast “与此相反”;in that “因为,由于”;in case “万一,假使”;in essence “本质上”。句意:假使生物技术允许人类打破基因墙。选项C符合题意。
(12)动词词义辨析。separate “分离,分开” ;form “构成,形成” ;create “创造,造成” ;vary “改变,使多样化”。句意:生物技术使人们打破分隔物种的基因壁垒。选项A符合题意。
(13)考查语法。空格应该是主语从句的引导词,句意:如同绿色革命一般,我们所说的基因革命有助于解决基因千篇一律的问题。有what引导主语从句。选项A符合题意。
(14)固定搭配。contribute to “有助于”,句意:基因革命有助于解决基因千篇一律的问题。选项B符合题意。
(15)逻辑关系。空格前后构成了因果关系。句意:因为遗传学者能采用技术,所以有助于解决基因千篇一律的问题选项B符合题意。
(16)固定搭配。空格后面是举了克隆和器官培养的例子,所以用such as “比如”,选项C符合题意。
(17)形容词词义辨析。resembling “像”,不是形容词,可排除 ;alike “相同的” ;similar “相似的”;identical “同一的,完全相同的”。文中是指完全相同的基因复制和克隆。选项D符合题意。
(18)名词词义辨析。issues “问题”; height “高度”; difficulties “困难”;goals “目标”。句意:转基因植物可能带来新的问题。选项A符合题意。
(19)名词词义辨析。spot “地点”;era “时代,年代”;deadline “最后期限”;scheme “计划”。句意:我们正盲目地飞向农业生物科学技术的新时代。选项B符合题意。
(20)名词词义辨析。navigations “航海”;mystery “神秘”;outcomes “结果”;destinations “目的地”。句意:不知道会带来什么样的潜在结果。选项C符合题意。