Directions : There are 20 blanks in the following passage. For each blank there are four choices marked A, B, C and D on the right side of the paper. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.
In recent years a new farming revolution has begun, one that involves the 67 of life at a fundamental level -- the gene. The study of genetics has 68 rise to a new industry called biotechnology. As the name suggests, it 69 biology and modern technology through such techniques as genetic engineering. Some of the new biotech companies specialize in agriculture and are working feverishly to 70 seeds that give a high yield, that 71 diseases, drought and frost, and that reduce the need for 72 chemicals. If such goals could be achieved, it would be most 73 . But some have raised concerns about genetically engineered crops.
In nature, genetic diversity is created within certain 74．A rose can be crossed with a different kind of rose，but a rose will never cross with a potato．Genetic engineerin9，on the other hand，usually 75 taking genes from one species and inserting them into another in a(n) 76 to transfer a desired characteristic．This could mean，for example，selecting a gene which leads to the production of a chemical with antifreeze 77 from an arctic fish，and inserting it into a potato or strawberry to make it frost—resistant．In 78 ，then，biotechnology allows humans t0 79 the genetic walls that separate species．
Like the green revolution，80 some call the gene revolution contributes to the problem of genetic uniformity—some say even more so 81 geneticists Can employ techniques such as cloning and 82 culture，processes that produce perfectly 83 copies．Concerns about the erosion of biodiversity，therefore，remain：Genetically altered plants，however，raise new 84， such as the effects that they may have on us and the environment．“We are flying blindly into a new 85 of agricultural biotechnology with high hopes，few constraints，and little idea of the potential 86。”said science writer Jeremy Rifkin．
67. A．manufacture
B management
C．manipulation
D．maturity
68. A．got
B． lived
C．come
D．given
69. A．blends
B ．breeds
C ．broods
D blasts
70. A．hatch
B．patent
C．duplicate
D ．train
71. A．restrict
B．retrieve來(lái)源：考試大
C．reverse
D．resist
72. A．hazardous
B ．hydraulic
C ．hostile
D．harmless
73. A．surprising
B．disappointing
C．beneficial
D ．extreme
74. A．lines
B ．a(chǎn)ges
C．space
D．limits
75．A．includes
B．involves
C．contains
D．comprises
76．A．a(chǎn)ttempt
B．case
C．point
D．regard
77．A．quality
B．quantity
C．priority
D．property
78．A．a(chǎn)dvance
B．part
C．essence
D．return
79．A．breach
B．blaze
C．brake
D．brand
80．A．where
B．a(chǎn)s
C．what
D．so
81．A．that
B．when
C．if
D．because
82．A．skin
B．muscle
C．organ
D．tissue
83．A．resembling
B．identical
C．similar
D．a(chǎn)like
84．A．difficulties
B．height
C．issues
D．goals
85．A．spot
B．scheme
C．deadline
D．era
86．A．outcomes
B．mystery
C．navigation 考試大－全國(guó)教育類網(wǎng)站(www．Examda。com)
D．destination
【結(jié)構(gòu)剖析】論說(shuō)文。本文主要介紹了基因工程在農(nóng)業(yè)上的應(yīng)用。首先指出由于基因工程的介入，農(nóng)業(yè)發(fā)生了革命；接著I具體介紹了生物工藝化的意義以及基因工程的特征；最后討論了生物工藝化引發(fā)的新問題。
In recent years a new farming revolution has begun, one that involves the 67 of life at a fundamental level -- the gene. The study of genetics has 68 rise to a new industry called biotechnology. As the name suggests, it 69 biology and modern technology through such techniques as genetic engineering. Some of the new biotech companies specialize in agriculture and are working feverishly to 70 seeds that give a high yield, that 71 diseases, drought and frost, and that reduce the need for 72 chemicals. If such goals could be achieved, it would be most 73 . But some have raised concerns about genetically engineered crops.
In nature, genetic diversity is created within certain 74．A rose can be crossed with a different kind of rose，but a rose will never cross with a potato．Genetic engineerin9，on the other hand，usually 75 taking genes from one species and inserting them into another in a(n) 76 to transfer a desired characteristic．This could mean，for example，selecting a gene which leads to the production of a chemical with antifreeze 77 from an arctic fish，and inserting it into a potato or strawberry to make it frost—resistant．In 78 ，then，biotechnology allows humans t0 79 the genetic walls that separate species．
Like the green revolution，80 some call the gene revolution contributes to the problem of genetic uniformity—some say even more so 81 geneticists Can employ techniques such as cloning and 82 culture，processes that produce perfectly 83 copies．Concerns about the erosion of biodiversity，therefore，remain：Genetically altered plants，however，raise new 84， such as the effects that they may have on us and the environment．“We are flying blindly into a new 85 of agricultural biotechnology with high hopes，few constraints，and little idea of the potential 86。”said science writer Jeremy Rifkin．
67. A．manufacture
B management
C．manipulation
D．maturity
68. A．got
B． lived
C．come
D．given
69. A．blends
B ．breeds
C ．broods
D blasts
70. A．hatch
B．patent
C．duplicate
D ．train
71. A．restrict
B．retrieve來(lái)源：考試大
C．reverse
D．resist
72. A．hazardous
B ．hydraulic
C ．hostile
D．harmless
73. A．surprising
B．disappointing
C．beneficial
D ．extreme
74. A．lines
B ．a(chǎn)ges
C．space
D．limits
75．A．includes
B．involves
C．contains
D．comprises
76．A．a(chǎn)ttempt
B．case
C．point
D．regard
77．A．quality
B．quantity
C．priority
D．property
78．A．a(chǎn)dvance
B．part
C．essence
D．return
79．A．breach
B．blaze
C．brake
D．brand
80．A．where
B．a(chǎn)s
C．what
D．so
81．A．that
B．when
C．if
D．because
82．A．skin
B．muscle
C．organ
D．tissue
83．A．resembling
B．identical
C．similar
D．a(chǎn)like
84．A．difficulties
B．height
C．issues
D．goals
85．A．spot
B．scheme
C．deadline
D．era
86．A．outcomes
B．mystery
C．navigation 考試大－全國(guó)教育類網(wǎng)站(www．Examda。com)
D．destination
【結(jié)構(gòu)剖析】論說(shuō)文。本文主要介紹了基因工程在農(nóng)業(yè)上的應(yīng)用。首先指出由于基因工程的介入，農(nóng)業(yè)發(fā)生了革命；接著I具體介紹了生物工藝化的意義以及基因工程的特征；最后討論了生物工藝化引發(fā)的新問題。