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题目内容
（华北水利水电大学英语）
The purpose of the article is<u style="font-size: 20px;"> </u>.
· to warpeople against the danger of the rising crime rate
· to help people to protect their houses
· to persuade people to buy something
· to discourage the burglars
· to warpeople against the danger of the rising crime rate
· to help people to protect their houses
· to persuade people to buy something
· to discourage the burglars
参考答案