A. He taught him some shortcuts to improve writing rapidly. B. He showed him methods on how to recite new words and expressions. C. He taught the student how to write an outline. D. He told the student to read more and write more.
A. 4种 B. 5种 C. 6种 D. 7种
A. 左上角 B. 右下角 C. 左下角 D. 右上角
A. 可见轮廓线 B. 不可见轮廓线 C. 轴线和对称线 D. 假想投影轮廓线
A. 点画线 B. 粗实线 C. 虚线 D. 细实线
微信支付 
支付宝支付