A:(x2)3=x5
B:3x2+2x2=5x4
C:x3•x3=x6
D:(x+y)2=x2+y2
听录音,给下面的句子排序
①Chen Jie is a helpful girl.____
②What's your friend like?____
③He can speak English and Chinese.____
④Our new music teacher will come today.____
⑤She's shy but clever.____
汽车发动机通常都用水来冷却,是利用水比其它液体的 ____大,在发动机周围同样的条件时循环所能带走的热量比较 ____