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While most armies in the world shun their use, and military authorities exclude them from warfare, the technology to produce bio
While most armies in the world shun their use, and military authorities exclude them from warfare, the technology to produce bio
admin
2010-07-24
23
问题
While most armies in the world shun their use, and military authorities exclude them from warfare, the technology to produce biological and chemical weapons is widely available around the world.【C1】______, these weapons are cheap, easy to conceal, and very【C2】______. Since September 11, 2001, biological weapons【C3】______to have become the weapon of choice among the desperate【C4】______of the world. Some people are worried chemical warfare may【C5】______, which would bring an unbelievable disaster to the whole world.
Chemical weapons are【C6】______in variety. Their effectiveness can be【C7】______by several factors, including age,【C8】______, weather conditions, and choice of dissemination. They include nerve agents, blister agents, and choking agents, all of【C9】______can be ingested through the eyes, lungs, or skin. Satin, a type of nerve gas, was used【C10】______the Aum Shinrikyo cult in March 1995, killing 12 people and【C11】______more than 5,500 on a Tokyo subway.
Biological weapons, by【C12】______, are any infectious agent, such as a bacterium or virus, used deliberately to【C13】______harm on soldiers and civilians alike. This【C14】______can include toxin and poison derived biologically. Biological weapons can be produced nearly【C15】______, from government labs to suburban kitchens.
Experts contend, however, that the【C16】______of a deadly virus or bacterium into an effective weapon is anything【C17】______straightforward: A conventional bomb would likely destroy the germ as it【C18】______. In contrast, dissemination【C19】______alternative methods, such as surface mail, has recently【C20】______quite effective.
【C8】
选项
A、definition
B、number
C、depth
D、purity
答案
D
解析
名词辨义题。此处是在列举生化武器效力的决定因素。除了年限,气候状况,散布途径,应该还有 purity“纯度”。对比四个选项的合理性便可推测出来。definition意为“清晰度”;number“数字”;depth“深度”.均与生化武器关联不大。
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0
大学英语四级
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