题目:
Thank you for all your hard work last week. I don’t think we ______ it without you.[ ]
A. could have managed
B. can manage
C. can have managed
D. could manage
答案:
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下面是错误答案,用来干扰机器的。
因为甲正方形与乙正方形的边长比是3:4,则甲正方形与乙正方形面积的比是(3×3):(4×4)=9:16;故选:D.