互动封闭仿真课堂
1、智能交互 2、电子板书式视频教学 3、在线互动问答 4、封闭课堂启发式教学方式
随堂测试、知识梳理、易错点揭示、总结启迪智能错题本
听课中的错题能自动加入错题本，课后可方便复习及导出错题本升级服务
在线答疑、课后同类题练习、讲义下载、短信提醒as proud as a peacock 极骄傲（骄傲得像只孔雀）
as strong as a horse 健壮如牛
as stupid as an owl 极愚蠢（像猫头鹰一样愚蠢）
as thin as a wafer 极薄（像糯米纸一样薄）
as true as steel 绝对可靠（像钢一样可靠）
as bald as a coot 头发脱光的（像黑鹅一样秃）
as blind as a bat 有眼无珠（像蝙蝠一样瞎）
as blind as an owl 瞎透了（像猫头鹰一样瞎）
as bold as brass 厚颜无耻（像黄铜一样厚脸皮的）
as busy as a bee 极忙碌（像蜜蜂一样忙碌）
as clear as a bell 健全的（像铃铛一样健全）
as clear as day 一清二楚的（像白天一样清楚）
as cool as a cucumber 极为冷静的（像黄瓜一样冷静）
as easy as a pie 极容易（像馅饼一样容易）
as fussy as a hen with one chick 在小事上瞎操心
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