两块厚度相同的木块A和B，紧靠着放在光滑的水平面上，其质量分别为mA＝0.5kg，mB＝0.3kg，它们的下底面光滑，上表面粗糙；另有一质量mC＝0.1kg的滑块C（可视为质点），以vC＝25m/s的速度恰好水平地滑到A的上表面，如图所示，由于摩擦，滑块最后停在木块B上，B和C的共同速度为3.0m/s，则木块A的最终速度vA＝____________m/s，滑块C离开A时的速度vC′＝____________m/s。
2.6，4.2
| 阅读理解。 | ||||||||||||
| Welcome the New Year Good evening! It's nine p.m. The party① for the new year of 2007 begins. Many people in China are waiting for the coming year. Now it's twelve. All the people are very happy and they cheer②.We know different cities have different time. We are at midnight in Beijing, but it's four p.m. in London③ and it's one a.m. in Tokyo, and it's two o'clock a.m. in Sydney④. HongKong has the same time as Shanghai. Thank you for welcoming the New Year with us! Notes: ① party n. 晚会 ② cheer v. 欢呼 ③ London n. 伦敦 ④ Sydney n. 悉尼 | ||||||||||||
| 读短文，完成表格。 | ||||||||||||
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