题型：问答题 简答题 如图所示，把两个气球悬挂起来，向气球的中间吹气，观察到的现象如图所示．某同学根据这种现象可以得出的结论：①流体的流速越大，压强越小．②气球具有惯性．③重力方向竖直向下．这些结论正确的是（ ）A．只有①正确B．只有①②正确C．只有①③正确D．①②③都正确 查看答案
题型：问答题 简答题 用方框中所给单词的适当形式填空 another party three tall danger 1.Who is __________, Tom or Mike?2. After __________ months' study, the scientist worked out the physics problem.3. The children are dancing at the __________.4. Don't touch the machine. It’s __________.5. I'm still thirsty. Can I have __________ cup of tea? 查看答案
