互动封闭仿真课堂1、智能交互 2、电子板书式视频教学 3、5分钟一次互动问答 4、封闭课堂
(4)Limit screen time. What's screen time?It's the amount of time you spend watching TV，movies and playing computer games. The more time you spend on these sitting-down activities，the less time you spend playing sports，like basketball，and doing other activities like riding and swimming. Try to spend no more than 2 hours a day on screen time.
1. In this passage，“health” includes all of the following EXCEPT ______.
A. eating well B. doing more exercise
C. having a healthy weight D. wearing comfortable clothes
2. The underlined phrase “a variety of” means ______.
A. plenty of B. all kinds of C. the rest of D. a lot of