用电脑打一篇1800字的文章小明需要30分钟,小红需要45分钟,现在是11：10,如果两人合作,能在11：30之前打完吗

你能帮帮他们吗

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精彩回答

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• On getting to the top of the mountain,we saw ____red sun rising in ____ east.

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• 解方程

  1年前