题目内容

Because he was ill, he didn't come.( )

A. 对
B. 错

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I’ll go with you to the cinema this afternoon if I’m free.( )

A. 对
B. 错

You should finish your homework before you go out to play.( )

A. 对
B. 错

The match was canceled because of the rain.( )

A. 对
B. 错

图纸空间中坐标显示的形状是。

A. 两个互相垂直的箭头
B. 世界坐标系统
C. 一个直角三角形
D. 三维坐标系

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