填空题An alarm system frightens away the burglars.____

填空题
An alarm system frightens away the burglars.____

参考解析

解析:
由题干关键词“alarm system”可定位到A段。这里提到,虽然家庭防盗系统并不能阻止盗贼进屋,但它有强大的威慑作用,使盗贼有所顾忌,故匹配段落为A段。

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