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In the evening,millions of small bats(蝙蝠)fill the night skies of Texas.There are 47-|||-different kinds of bats in the United States,and 31 kinds live in Texas.Among all the kinds of bats-|||-in Texas,the Mexican free-tailed bat has the largest population and is the easiest to be seen. Each-|||-year 20 million Mexican free-tailed bats return to Bracken Cave near San Antonio,where they give-|||-birth to and raise their young.Bracken Cave is home to the largest bat group in the world.-|||-Most bats come out of their homes only at night.Three kinds of bats feed on blood.So bats-|||-have long been linked(联系)in many cultures to death,darkness and blood-drinking. While bats-|||-seem scary to some people, these night flyers can do good to other living things.Bats eat insects-|||-that can be harmful to plants,animals,and even people.For example,a brown bat can eat more than-|||-1,000 insects in one hour.One report says bats save American farmers billions of dollars every year-|||-by reducing crop damage and limiting the need for chemicals that kill insects.Bats also spread-|||-pollen(花粉)among flowering plants.-|||-As humans build new houses and businesses,bat homes,like trees and holes, are-|||-disappearing. Without hom bats don`t have a place to rest or to feed their young.Humans can-|||-help bats with this problem by providing bat houses.Today there are many people who build homes-|||-for bats.-|||-Bat houses need to have something that bats can grab(抓住)for sleeping.The houses must-|||-be painted black on the inside so that they are dark inside.This allows bats to sleep comfortably-|||-during the day.Bat houses should also have water and plants so that bats have something to eat and-|||-drink.The houses should be in high places so that they are off the ground,where big animals can`t-|||-reach them. Giving bats a home is a great way to help these useful animals.-|||-There are 31 kinds of bats living there.-|||-Bats in Texas The 1 bat there is the Mexican free-tailed bat.-|||-Bracken Cave is home to the largest bat group in the world.-|||-Popularity of bats They are widely 2 and misunderstood.-|||-3 of They eat insects and that helps to protect plants,animals and people.-|||-bats .They spread pollen among flowering plants.-|||-Problem Bat homes are 4 -|||-Solution Many people are building homes for bats.-|||-Requirements of The inside must be in dark color so that bats can sleep comfortably in the day.-|||-bat houses There should be water and plants so that bats have something to eat and drink.-|||-The houses should be in high places so that bats can be well 5 二-|||-1. 2. -|||-3. 4. -|||-5.

题目解答

答案

1.largest population

2.distributed

3.Function

4.disappearing

5.protected

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