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Part II: Close
The study of genetics has given rise to a profitable new industry called biotechnology. As the name [31] ____, it combines biology and modern technology through such [32] ____ as genetic engineering. Some of the new biotech companies, as they are called, [33] ____ in agriculture and are working enthusiastically to patent seeds that give a high yield, that [34] ____ disease, drought and frost, and that reduce the need for dangerous chemicals. [35] ____ such goals could be achieved, it would be most beneficial. But some have raised [36] ____ about genetically engineered crops.
"In nature, genetic diversity is created within certain limits," says the book Genetic Engineering, Food and Our Environment. "A rose can be crossed with a different kind of rose, but a rose will [37] ____ 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 [38] ____ a desired property or character. This could mean, [39] ____, 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 [40] ____ from bacteria, viruses, insects, animals or even humans. [41] ____, then, biotechnology allows humans to break the genetic walls that [42] ____ species.
Like the green revolution, [43] ____ what some call the gene revolution [44] ____ contributes to the problem of genetic uniformity — some say even more so [45] ____ because geneticists can employ techniques such [46] ____ as cloning and organ culture, processes that produce perfectly [47] ____ identical copies, or clones. Concerns about the biodiversity, therefore, remain. Genetically altered plants, however, raise new [48] ____ issues, such as the effects that they may have on us and the environment. “We are flying blindly into a new [49] ____ of agricultural biotechnology with high hopes, few constraints, and little idea of the potential [50] ____,” said science writer Jeremy Rifkin.
31. | A. | suggests | B. | recalls | C. | concerns | D. | advises |
32. | A. | concepts | B. | views | C. | techniques | D. | courses |
33. | A. | participate | B. | focus | C. | specialize | D. | involve |
34. | A. | treat | B. | avoid | C. | oppose | D. | resist |
35. | A. | If | B. | Unless | C. | since | D. | As |
36. | A. | demands | B. | topics | C. | concerns | D. | lessons |
37. | A. | sometimes | B. | never | C. | frequently | D. | eventually |
38. | A. | convey | B. | transfer | C. | select | D. | collect |
39. | A. | for example | B. | for one thing | C. | on one hand | D. | in any case |
40. | A. | resulted | B. | evolved | C. | injected | D. | taken |
41. | A. | In contrast | B. | In that | C. | In case | D. | In essence |
42. | A. | separate | B. | from | C. | create | D. | vary |
43. | A. | what | B. | where | C. | as | D. | so |
44. | A. | combines | B. | contributes | C. | commands | D. | breaks |
45. | A. | that | B. | because | C. | if | D. | when |
46. | A. | like | B. | for example | C. | as | D. | is |
47. | A | resembling | B. | alike | C. | similar | D. | identical |
48. | A. | issues | B. | height | C. | difficulties | D. | goals |
49. | A. | spot | B. | era | C. | deadline | D. | scheme |
50. | A. | navigations | B. | mystery | C. | outcomes | D. | destinations |
参考答案:
31. 选A。句义:正如生物科技名称所暗示的,它是生物与现代科技的结合……。suggest除了“建议”,还常用作“暗示”讲。其它项均无“暗示”之意。
32. 选A。句义:……通过“基因工程”的概念……。concepts概念;B项views看法;C项techniques技巧;D项courses课程,路径。
33. 选C。句义:一些新兴生物科技公司,正如它们的名字,主要致力于农业……。specialize in专攻于;A项participate in参与;B项focus致力于、集中于,但一般后接介词on;D项involve常用被动be involved in被卷入、参与。
34. 选D。句义:这些科技公司积极地付出,为取得种子的专利,从而提高产量,抵制疾病、干旱、霜害。”resist抵制;A项treat治疗,一般用于疾病;B项avoid避免;C项oppose反对(某人、某项计划或政策)
35. 选A。句义:如果这些目标达成,公司就会获得丰厚的收益。本题考查条件状语从句;B项unless 除非,也用于条件状语从句,但意义在本题中不符合;C、D项均作“因为,由于”之意。
37. 选B。句义:一种玫瑰可以和另一种玫瑰杂交,然而玫瑰却不可以和土豆杂交。注意这句话的转折关系,因此答案选never。
39. 选A。这句话指,“将热带鱼抗冻基因提取出来,将其植入土豆或者草莓中使其具有抗冻功能。”明显是对上句话举出的一个具体事例。
40. 选D。句义:如今从细菌、病毒、昆虫、动物甚至是人身上提取的基因也可以植入植物。be taken from指从……提取出来;be evolved from指由……进化而来;inject植入、插入;result from导致,但不用作被动。
41. 选D。最后一句话意为“生物科技让人们能够打破创造物种的基因墙”明显是对前文内容的概括和提炼。in essence指从本质上讲,通常作用是对一般现象的提炼;in contrast相比较而言;in that由于、因为;in case以防万一。
42. 选C。根据41题,本体应当选择create(创造)。由于that后应接定语从句,缺少动词,排除B项;separate分离;vary改变,呈现差异。