开盘集合竞价在交易日开市前5分钟内进行，其中前4分钟为买、卖指令申报时间，后1分钟为集合竞价撮合时间。( )
参考答案：对
— Why do you drink so much coffee?
— Well, ________ it doesn't keep me awake at night, I see no harm in it.[ ]
A. although
B. for
C. as long as
D. as far as
何谓肠上皮化生，肠上皮化生有何意义?
