互動封閉仿真課堂
1、智能交互 2、電子板書式視頻教學 3、在線互動問答 4、封閉課堂啟發(fā)式教學方式
隨堂測試、知識梳理、易錯點揭示、總結啟迪智能錯題本
聽課中的錯題能自動加入錯題本，課后可方便復習及導出錯題本升級服務
在線答疑、課后同類題練習、講義下載、短信提醒(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
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