从方框中选择适当的句子补全对话。A. Yes, I do. B. Why did
题型：补全对话，情景问答
问题：
| 从方框中选择适当的句子补全对话。 | |
B: 1 A: 2 B: No, I was born in London. A: How long did you live here? B: 3 A:So you moved here in 2003. B: Yes; that's right. A: 4 B: Because my father found a job here. A: Do you like living in China? B: 5 1.______2.______3.______4.______5.______ |
和
，a、b两物块的质量均为m，所有接触面都是光滑的，现发现a、b沿斜面自由下滑时，楔形木块静止不动，则此过程M对水平桌面的压力等于 .