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7. pick up
「课文原句」They wash sand from the river in a pan of water， and expect to pick up gold， but they have been not fortunate enough to find any. （P18）
「名师点拨」pick up意为“拾起；拿起”。如：He picked up his hat and went out. pick up还有其他意思：（1） 在中途搭载承载（乘客、货物等）。如：The bus stopped to pick up passengers.（2） （偶然地）发现，得到，购买；学得，得到（知识、利益）。如：I picked up the book in a lonely place. She picked up French very quickly in France. When you live in a country， you soon pick up the language.（3） 恢复，使恢复。如：I believe he will pick up by the seaside.（4） 接收，收听（广播）。如：It is easy to pick up the programme clearly through my radio.「知识拓展」pick out意为“选好；选出；认出；看清楚”。如：Have you picked out the movie you want to see？
Can you pick out your brother out from that group of people？
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