1. 根据短文内容理解，选择正确答案。

C

    Thousands of bats(蝙蝠)in the Northeast are dying, and no one knows why. Scientists are conducting investigations(开展调查) to find out the cause and stop the spread of deaths, which have been most heavily reported in New York, Vermont and Massachusetts.

    "Most bat researchers agree that this is the most serious threat to bats they have ever seen, " says Alan Hicks, a bat expert who works in the New York Department of Environmental Conservation.

    There are few clues about the cause of the deaths. Bats are easy to catch the contagious disease(传染病) because they hibernate(冬眠) together. In some caves, there are 300 bats per square foot. Environmental officials are asking people to stay out of bat caves to avoid spreading the mysterious(神秘的) sickness while they are working to find out what it is.

1. （1） Thousands of bats in the Northeast are ________.

   A . born B . flying C . dying D . leaving
3. （2） Which city is NOT mentioned in the passage?

   A . Seattle. B . New York. C . Vermont. D . Massachusetts.
5. （3） Bats are easy to catch the contagious disease because ________.

   A . they live together B . they fly together C . they sleep together in winter D . they go out together
7. （4） There are ________ clues about the cause of the deaths.

   A . few B . many C . a few D . a lot of
9. （5） What is the best title for the passage?

   A . The Mysterious Bats B . What Is Killing Bats C . Bats and the Disease D . Bats and the Environment