单选题:某个长方形运动场最近要扩建,其长和宽都扩大了二分之一,则现在该运动场的面积是原来的几倍?

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题目内容:
某个长方形运动场最近要扩建,其长和宽都扩大了二分之一,则现在该运动场的面积是原来的几倍? A.1.2
B.
C.
D.2.3

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