题目

As the US wakes up to China’s rising status (地位) as an economic and strategic competitor, US parents are urging their children to learn Chinese, reports Julian Borger.     The US is being swept by a rush to learn Mandarin (普通话) -- from wealthy New York mothers hiring Chinese nannies (保姆) for their small children to a defence department education project in Oregon.     The forces driving Mandarin’s momentum (势头) are parental ambition for children facing a future in which China is almost certain to be a major player, and the government is worried about that America ma在如图方格中，有一个三角形ABC和一点O，三角形ABC的顶点和点O均与小正方形的顶点重合．（1）在方格纸中，将三角形ABC向下平移4个单位长度得到三角形DEF，请画出三角形DEF；（2）在方格纸中，将三角形ABC绕点C顺时针旋转180°得到三角形PMN，请画出三角形PMN．