A:200立方厘米
B:200立方分米
C:200立方米
如图为同一个密封的袋装食品放在手掌上的两张照片,甲图摄于海拔200m处,乙图摄于海拔3200m处。则袋装食品袋内气体不变的量是( )
Look, you can see many _________ in the pool. And here is some ________for you to keep them.
完成句子。