互動封閉仿真課堂
1、智能交互 2、電子板書式視頻教學(xué) 3、在線互動問答 4、封閉課堂啟發(fā)式教學(xué)方式
隨堂測試、知識梳理、易錯點(diǎn)揭示、總結(jié)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(fù)習(xí)及導(dǎo)出錯題本升級服務(wù)
在線答疑、課后同類題練習(xí)、講義下載、短信提醒19.Scientists say it may be five or ten years _____ it is possible to test this medicine on human patients.
A. since B. before C. after D. when
20.___ the Internet is bringing the distance between people, it may also be breaking some homes or will cause other family problems.
A. When B. If C. As D. While
21.Though he is in his sixties, ______ he works as hard as a young man
A. yet B. but C. and D. and yet
22.The two girls look ____ much alike ____ no one can tell them apart.
A. so, that B. so, and C. as, that D. such, that