The main idea of this passage is ______. It can be guessed from the passage that the author ______.

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问题 The main idea of this passage is ______.
It can be guessed from the passage that the author ______.

选项 A、is in favor of prohibiting passengers’ use of electronic devices completely
B、regards it as unreasonable to exercise a total ban during flight
C、hasn’t formed his own opinion on this problem
D、has overestimated the danger of electromagnetic interference

答案A

解析 这是一道推导出作者态度的问题。从全篇来看,作者对在飞机上全面禁止使用便携式电子设备态度是肯定的,作者对问题的提出(The biggest safety threat facing airlines today...),列举的数据以及谈论这一问题的口气,都可以看出这一点,因此选项A是答案。
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