A:5:4
B:4:5
C:4:3
D:3:4
能供给呼吸的是____;可用于填充载人飞艇的是____;
植物进行光合作用吸收的是____;
用于仓库里储存粮食的气体是____;引起酸雨的气体是____。
--He was a great brother. He held the whole family.
It's taller than both of we.____