题目内容
完形填空
Bats are among the least understood creatures in the world today. Until recently, not many people seemed to care about their rapid disappearance. That is because bats are commonly feared and hated. The strong feeling about them are the result of many false beliefs about the creatures. Stories are told about bats attacking people or being caught in human hair. However, bats are not a threat to people. 1 , they are a central part of the environment(环境). The death of bats severely(严重地) affects everything that lives in 2 natural surroundings.
3 are one of the most effective controls on insects' population. For example, a 4 little brown bat can catch 600 insects in an hour. Twenty - five million bats 5 lived in a cave in the southwestern state of Arizona. They killed up to 200 tons of insects 6 night. The bats protected crops of local farms 7 being destroyed by the insects.
For the past several years, scientists have been learning more about the economical and environmental 8 of bats. Throughout the world, bats are the main 9 of insects that destroy crops and forest. Bats 10 help carry pollen (花粉) to fertilize flowers. They 11 plant seeds throughout deserts and forest areas. The loss of bats 12 many fruits, nuts, and vegetables throughout the world can't survive(生存).
In the United States, more than half the different kinds of bats are considered in 13 of disappearing. Their loss will increase the dependence of farmers 14 poisonous chemicals to kill harmful insects.
In 1962, an organization was set up to help 15 bats and the areas in which they live. The organization is 16 Bat Conservation International. Merlin Tuttle formed it. He is recognized worldwide 17 a leading expert on bats. Bats Conservation now has more then 12,000 members in 55 18 .
One of the goals (目标) of the organization is to educate people about the importance of bats and the need to protect 19 . Last June Bat Conservation International and two American government agencies (组织)announced a joint 20 . They will work together to protect the bats that have made their homes in old mines.
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解析：
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1．C 导解：in fact是固定短语，位于主句前常用逗号与主句分开。 2．B 导解：its＝everything's注意用相应的代词形式。 3．B 导解：承上启下，同时为该段主题句中的关键词。 4．A 导解：表示“一只棕色的小蝙蝠”。 5．B 导解：once修饰动词lived，意为“曾经，一度”。而A（有时），C（几次），D（仍然）皆与题意不符。 6．A 导解：强调“每晚”。 7．B 导解：protect…from“保护……免遭”。 8．A 导解：该句既是对上段的总结，也是对主题句的深化，同时是该段的中心句，是围绕核心词“value”展开。 9．B 导解：从第三段论述中可知。 10．C 导解：由信息词more暗示中可知。 11．C 导解：spread在此作“分布，散布”讲。 12．A 导解：means“意味着”。如The dark clouds mean rain. 13．B 导解：in danger of“处于……危险中”。 14．A 导解：与depend是同根词，后接on/upon． 15．C 导解：根据文中内容可知，蝙蝠是对人类有益的动物，因此需要“保护、挽救”他们。 16．A 导解：be called“取名于……”。 17．B 导解：be recognized as“被认为是……”。 18．D 导解：由international, worldwide暗示。 19．A 导解：them指代前面的bats． 20．B 导解：此处指Bat Conservation and two American government agencies宣布一项合作计划。 |
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