题目

在荒岛上鲁滨逊用甘蔗酿出了美味的甘蔗酒．如果想要从甘蔗酒中分离出酒精，需要发生的物态变化有和． 答案：【1】汽化【2】液化Go and tell the boy _____ with the fire. It's too dangerous. [     ]A. don't play B. not play C. not to play D. not playing