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4.Mr.Black decided to give up his farm and devoted all his time to those homeless children.
A.help B.helping
C.be helping D.being helped
解析:选B。devote...to是固定搭配,其中to为介词,后常跟名词或动词ing形式,故选B项。
5.Anne felt nervous she gave a speech in front of so many students.
A.for the first time B.the first time
C.at the first time D.the first time that
解析:选B。the first time相当于连词,引导时间状语从句,通常意为“第一次……”。for the first time只作状语,不能用来引导状语从句。