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52. Television, as a source of entertainment, is ______.
A. not very convenient B. very expensive
C. quite dangerous D. relatively cheap
53. Why are some people against TV?
A. Because TV programs re not interesting
B. Because TV viewers are totally passive
C. Because TV prices are very high.
D. Because TV has both advantages and disadvantages
54. One of the most obvious advantages of TV is that ______.
A. it keeps us informed
B. it is very cheap
C. it enables us to have a rest
D. it controls our lives
55. According to the passage, whether TV is good or not depends on _______ .
A. its quality B. people 's attitude towards it
C. how we use it D. when we use it