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【题目】Our road information system should be improved so that we ____ know the road condition ahead of time

A.mustB.shouldC.canD.could

【答案】C

【解析】

句意:我们的道路信息系统应该改进,以便我们可以提前了解道路状况。

考查情态动词,A必须;B应该;C能、可以;D可以(can的过去式),结合语境可知,应该是"可以",一般现在时态用can,选C。

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