04 同等學(xué)歷真題

In recent years a new farming revolution has begun ， one that involves the 61 of life at a fundamental level – the gene ． The study of genetics has 62 a new industry called biotechnology ． As the name suggest ， it 63 biology and modem technology through such techniques as genetic engineering ． Some of the new biotech companies specialize in agriculture and are working feverishly to 64 seeds that give a high yield ， that 65 diseases ， drought and frost ， and that reduce the need for

66 chemicals ． If such goals could be achieved ， it would be most 67 ． But some have raised concerns about genetically engineered crops ．

In nature ， genetic diversity is created within certain 68 ． A rose can be crossed with a different kind of rose ， but a rose will never cross with a potato ． Genetic engineering ， 69 usually involves taking genes from one species and inserting them into another 70 to transfer a desired characteristic ． This could mean ， for example ， selecting a gene which leads to the production of a chemical with anti-freeze 71 from an artic fish ， and inserting it into a potato or strawberry to make it frost-resistant ． 72 ， then ， biotechnology allows humans to 73 the genetic walls that separate species ．

Like the green revolution ， 74 some call the gene revolution contributes to the problem of genetic uniformity — some say even more so 75 geneticists can employ techniques such as cloning and 76 culture( 培養(yǎng) ) ， processes that produce perfectly 77 copies ． Concerns about the erosion of biodiversity ， therefore ， remain ． Genetically altered plants ， however ， raise new 78 ， such as the effects that they may have on us and the environment ． “We are flying blindly into a new 79 of agricultural biotechnology with high hopes ， few constraints ， and little idea of the potential 80 ， ” said science writer Jeremy Rifkin ．

61 ． A ． manufacture B ． management C ． manipulation D ． maturity

62 ． A ． got along with B ． lived up to C ． come up with D ． given rise to

63 ． A ． blends B ． breeds C ． broods D ． blasts

64 ． A ． hatch B ． patent C ． duplicate D ． train

65 ． A ． restrict B ． retrieve C ． reverse D ． resist

66 ． A ． hazardous B ． hydraulic C ． hostile D ． harmless

67 ． A ． surprising B ． disappointing C ． beneficial D ． extreme

68 ． A ． lines B ． ages C ． space D ． limits

69 ． A ． after all B ． on the other hand C ． in any case D ． as a rest

70 ． A ． in an attempt B ． in no case C ． to the point D ． with regard

71 ． A ． quality B ． quantity C ． priority D ． property

72 ． A ． In advance B ． In part C ． In essence D ． In return

73 ． A ． breach B ． blaze C ． brake D ． brand

74 ． A ． where B ． as C ． what D ． so

75 ． A ． that B ． when C ． if D ． because

76 ． A ． skin B ． muscle C ． organ D ． tissue

77 ． A ． resembling B ． identical C ． similar D ． alike

78 ． A ． difficulties B ． height C ． issues D ． goals

79 ． A ． spot B ． scheme C ． deadline D ． era

80 ． A ． outcomes B ． mystery C ． navigation D ． destination

61 ． C 62 ． D 63 ． A 64 ． B 65 ． D 66 ． A 67 ． C 68 ． D 69 ． B 70 ． A 71 ． D 72 ． C 73 ． A 74 ． C 75 ． D 76 ． D 77 ． B 78 ． C 79 ． D 80 ． A

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