新生代包括()三个纪
A.寒武纪、奥陶纪、志留纪
B.泥盆纪、石炭纪、二叠纪
C.三叠纪、株罗纪、白垩纪
D.古近纪、新近纪、第四纪
参考答案:D
以下哪些卡属于事后卡。()
A、员工卡
B、贵宾卡
C、预制卡
D、保号换卡
—Daddy, will you come home for supper with us today?
—______, but I might be a little late. [ ]
A. I'm busy
B. No problem
C. It's a pity
D. It's hard to say