题目

Tom looked at Jenny, with tears _______ his eyes, and shouted out the words ______ in his heart for years.   A. filling; hiding    B. filled; hidden    C. filling; hidden      D. filled; hiding 答案:C 解析: 略(1)如图1,是一个破损的机器部件,它的残留边缘是圆弧,请作图找出圆心.(用尺规作图,保留作图痕迹,不写出作法,不用证明)(2)在图2中,画出△ABC关于点O为对称中心的对称图形,并以B点为旋转中心,把△ABC按顺时针方向旋转90度,并标明对应字母.
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