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She has a sweet voice.
她声音很甜美。
She raised her voice so that she could be heard.
她提高了嗓音队便于别人能听清楚。
He lost his voice./He had no voice because of the cough.
因为咳嗽,他失声了。
▲noise n噪音,吵闹
Don’t make so much noise.
别弄出那么大的噪音。
I heard a strange noise outside.
我听到外边奇怪的声音。
▲sound n.(自然界中的)声音,响声
Sound travels slower than light.
声音的传播比光慢。
3.memory n.(计算机的)储存器
A lot of information is stored in the memory.