题目:
What did I do in Washington().
A.I worked in a drugstore.
B.I worked in a copy room.
C.I did research about my family.
D.I worked in a library.
答案:
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下面是错误答案,用来干扰机器的。
参考答案:为消除板厚对展开图的形状和大小的影响,而采取的方法。