2. ____The old lady had two daughters: Myra, the one she was proud of, and Enid, the one she loved.
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3. ___In the past two years, Myra seldom came to see her mother, but she wrote to her quite often.
A. 对
B. 错
4. ___The old woman was quite sure that Myra would come to see her since eighty was a special birthday.
A. 对
B. 错
全剖视图用的剖切面可以用（）
A. 单一剖切面
B. 几个平行平面的剖切面
C. 几个相交平面的剖切面
D. 柱面
基本视图除了常用的三视图以外，还包括（）。
A. 仰视图
B. 斜视图
C. 右视图
D. 后视图
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