Learning is the bow, while competence is the arrow. This quotation comes from Xu Shi Pin (Sequel to Discourses on Poetry) by Yuan Mei (1716-1797), a poet and critic of the Qing Dynasty. With this ...

对照流程图，我们逐题分析—— 题1：One of the earliest-known inventions is the bow and arrow, which is still used throughout the world today, 15,000 years it was first invented.