A:共产主义战士雷锋
B:“铁人”王进喜
C:党的好干部焦裕禄
D:敬爱的总理周恩来
—It's so cold today.
—Yes, it's _____________ colder than it was yesterday.
计算下列算术题,并在横线上填上英文答案。
24 - 5= ____
在右图所示装置中,有四支充满不同气体的试管,倒立在水槽中,当拔开塞子时,试管中水位上升最高的是()