题干
---What a long queue!
--- Yeah．We ________________ up in the past few hours for tickets back home．
--- Yeah．We ________________ up in the past few hours for tickets back home．
A：queued
B：have queued
C：are queuing
D：have been queuing
答案(点此获取答案解析）
D
）和乙醇的混合物共1mol，完全燃烧生成54g水和56L（标准状况下测定）CO2，则完全燃烧时消耗氧气物质的量是（ ）