小艇上太阳能光伏板面积约为500m²，在阳光的照射下，通过太阳能板可以获得100kW的功率．

这种小艇有两个相同的引擎，仅需20kW的功率驱动单引擎，就能以18km/h的速度匀速行驶．用40kW的功率驱动双引擎，小艇匀速行驶的速度高达30km/h．

这种小艇采用密度较小，硬度大的新型材料制造，自重仅为9×10⁴N，满载的排水量为60t．

世界基本被瓜分完毕是在(     )

依次连接等腰梯形各边的中点得到的四边形是（   ）

    I'm an Chinese girl. My name is Rose. I have a brother. His name is Tom. Tom and I are in the same school. I often go to school by bike. Tom usually⑴w__________ to school. We both(两个都) have lunch at school and we like Chinese food very much. After school， Tom always plays basketball with his classmates. ②I always speak Chinese because I like Chinese best. I go home at about five o'clock in the afternoon. But Tom goes home late， at about a quarter past seven. My parents are both teachers. They teach for many years in Beijing. We like China very much.