When water ______,it turns into ice.a.boils b.cools down c.gets warm d.free
问题描述：
When water ______,it turns into ice.a.boils b.cools down c.gets warm d.free
答
B ，水凉了，就会结成冰
答
b
答
b. cools down 是对的
答
f
答
b
a.煮沸b.冷却c.变暖 d.*/释放
当水温度降下来时,便会变成冰