唐代陆羽的《茶经》已有记载，西湖地区所产的白云茶等已被列为贡品是在( )
A．宋代
B．唐代
C．元代
D．明代
参考答案：A
It was ___ Li Ming had always been working hard that he was admitted to Beijing University last July.
___ the saying goes, "No pains, no gains". [ ]
A. because; As
B. as; Though
C. for; As
D. since; Where
电流记录仪如何校验？
