What is the main purpose of this passage? What does the word "malfunction" mean in paragraph 1 ?

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问题 What is the main purpose of this passage?
What does the word "malfunction" mean in paragraph 1 ?

选项 A、失误
B、制造
C、影响
D、事情

答案A

解析根据上下文可推测出来。

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公共英语二级笔试

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