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.
{{U}}(67) {{/U}}, these weapons are cheap, easy to conceal, and very
{{U}}(68) {{/U}}. Since September 11, 2001, biological weapons
{{U}}(69) {{/U}} to have become the weapon of choice among the desperate
{{U}}(70) {{/U}} of the world. Some people are worried chemical
warfare may {{U}}(71) {{/U}}, which would bring an unbelievable disaster
to the whole world. Chemical weapons are {{U}}(72)
{{/U}}in variety. Their effectiveness can be{{U}} (73) {{/U}} by
several factors, including age, {{U}}(74) {{/U}}, weather conditions,
and choice of dissemination. They include nerve agents, blister agents,
and choking agents, all of {{U}}(75) {{/U}} can be ingested through the
eyes, lungs, or skin. Satin, a type of nerve gas, was used {{U}}(76)
{{/U}}the Aum Shinrikyo cult in March 1995, killing 12 people and
{{U}}(77) {{/U}} more than 5,500 on a Tokyo subway.
Biological weapons, by{{U}} (78) {{/U}}, are any infectious agent,
such as a bacterium or virus, used deliberately to {{U}}(79) {{/U}} harm
on soldiers and civilians alike. This {{U}}(80) {{/U}} can include toxin
and poison derived biologically. Biological weapons can be produced nearly
{{U}}(81) {{/U}}, from government labs to suburban kitchens.
Experts contend, however, that the {{U}}(82) {{/U}} of a deadly
virus or bacterium into an effective weapon is anything {{U}}(83) {{/U}}
straightforward: A conventional bomb would likely destroy the germ as it
{{U}}(84) {{/U}}. In contrast, dissemination {{U}}(85) {{/U}}
alternative methods, such as surface mail, has recently {{U}}(86)
{{/U}} quite effective.
【答案解析】[精解] 动词辨义题。此处需要一个可与不定式搭配并确保意思连贯的动词。本句表达的意思是“9.11之后，生化武器似乎已成了世界上好战分子们选择的武器。”故选择seem to do的结构，表达“似乎……，好像……”。regard意为“看作”，常用在regard... as... 的结构中；lead可与to 搭配，表达“导致”的意思；seek to do sth. 意为“寻求做某事．试图做某事”。
【正确答案】
A
【答案解析】[精解] 名词辨义题。文章第一句说明目前大多数国家的政府和军队都不提倡使用生化武器，那么谁会意图使用它呢?而且文章用了desperate来形容这类人群。不难推测是指militants“激进分子”。militaries“军队”，前文明确说明military authorities exclude them from warfare；soldiers“士兵”、citizens“公民”，更不可能无故使用生化武器。均可排除。
【答案解析】[精解] 名词辨义题。总体把握该段，主要是对生化武器的定义和制作方法进行阐述。Biological weapons ... are any infectious agent, such as...。由此可见这是对生化武器的定义。故选择definition“定义”。 description意为“描述”；function意为“作用”；content意为“内容”，均不准确。