A:硫
B:汞
C:铜
D:铁
下列物质中,沸点最高的是( )
⒈Underline the train.
⒉Point to the car.
⒊Colour the bike red.
⒋Tick the bus.
⒌ Circle the ship.
有15个苹果,平均放在5个盘子里,每盘放____个。