What does the author mainly discuss in this passage? The author indicates that a passenger-side air bag ______.

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问题 What does the author mainly discuss in this passage?
The author indicates that a passenger-side air bag ______.

选项 A、might not be dangerous if switched off
B、is designed for the safety of children
C、is discharged at 320 km/h and will not triggered by other factors
D、is not working if a child sits in the seat

答案A

解析 推断题。文章第三段最后一句指出,如果你不得不让孩子坐车前座,你就必须关掉前座旁的安全气囊,由此推断,关掉后的安全气囊对孩子应该没有危险,所以A正确。
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