【单选题】Is she reading a book?
【判断题】【(2)2】一个条形支撑板可以消除2个自由度;一个矩形支撑板可以消除3个自由度。
【简答题】A.He knew this beforehand. B.He judged from his common sense. C.He judged from the speeds of sound D.He judged by reading the textbook.
【多选题】思想的活的灵魂,它们有三个基本方面,即 。
【判断题】【(2)2】一个条形支撑板可以消除3个自由度。
【多选题】思想的活的灵魂,它们有三个基本方面,即 。
【简答题】A.He knew this beforehand. B.He judged from his common sense. C.He judged from the speeds of sound D.He judged by reading the textbook.
【简答题】A.She left the lecture for a few minutes. B.She was reading during the lecture. C.She may have fallen asleep. D.She misunderstood the speaker's last points.
【简答题】听对话,选择正确答语。 1. What is Sue doing? A. She is reading a book. B. She is doing her homework. C. She is cleaning the room. 2. How much is a hamburger? A. It's six dollars and twenty cents. B. It's three d...