对安全施工技术要求应进行（）级交底
A、一
B、二
C、三
D、四
参考答案：B
槟榔肝可发展为（）
A.门脉性肝硬化
B.色素性肝硬化
C.胆汁性肝硬化
D.淤血性肝硬化
E.肝梗死
Most probably it will be another 7 hours _____ you can have next meal, so each of you must have your stomach full.
A．since
B．when
C．after
D．before
