题目内容
Cloze
Bats are among the least understood creatures in the world today. Until __1__ not many people seemed to care about their rapid disappearance. That's because bats commonly are feared and __2__ . The strong feelings about bats are the result of many false beliefs about the creatures. Stories are told about bats attacking people or __3__ caught in human hair. __4__ , bats are not a threat to people. 5__ , they are central part of the environment（环境）. The death of bats severely affects everything that lives in __6__ natural surroundings.
__7__ are one of the most effective controls in insects population. For example, a single little brown bat can catch 600 insects in an hour. “Twenty-five” million bats __8__ lived in a cave in the southwestern state of Arizona, they killed up to 200 tons of insects __9__ night.the bats protected crops of local farms __10__ being destroyed by the insects.
For the past several years, scientists have been learning more about the economical and environmental __11__ of bats. Throughout the world, bats are the main hunters of insects that destroy crops and forests. Bats __12__. help carry pollen（花粉）to fertilize flowers, And they spread plant seeds throughout deserts and forest areas. The loss of bats __13__ many fruits, nuts, and vegetables throughout the world cannot survive.
In the United States, more than, half of the different kinds of bats are considered in __14__ of disappearing. Their loss will increase the dependence of farmers __15__ poisonous chemicals to kill harmful insects.
In 1962, an organization was set up to help __16__ bats and the areas in which they live. The organization is called Bat Conservation International. Meilin Tuttle formed it. He is recognized worldwide __17__ a leading expert on bats. Bats Conservation International now has more than 12,000 members in 55 __18__.
One of the goals of the organization is to educate people about the importance of bats and 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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