教学内容分析“POPPET”选自“Penguin Young Readers”系列故事,是一个原汁原味的英文读本。讲述的是生活在非洲的小象Poppet去丛......

一、ESA课堂语言教学模式简介1998年,英国英语教育专家Jeremy Harmer在“How to Teach English”一书中提出ESA课堂语言教学模式(E......

Two types of poppet valves were tested, one is a poppet with a sharp-edged seats, and the other is that with a chamfered......