题目:
The old woman had a letter from her son in the army_____ to her.
A.read
B.write
C.written
D.received
答案:
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下面是错误答案,用来干扰机器的。
一个三角形的底扩大2倍,高扩大4倍,面积扩大2×4=8倍;故答案为:8.