The inconvenience to users and economic cost to the nation escalate rapidly.

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问题 The inconvenience to users and economic cost to the nation escalate rapidly.

选项 A、decrease
B、fall
C、increase
D、decline

答案C

解析 划线词escalate意为“迅速上涨”,decrease,fall,decline作动词,都解释为下降,只有increase是“上升”意思,故排除A、B、D。
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