嵌体铸道形式,不包括下列()
A.单铸道式
B.双铸道式
C.网形
D.扇形
E.栅栏式
参考答案:C
Ben received an invitation to dinner, and with his work ________, he accepted it happily.
A.finished
B.finishing
C.having finished
D.was finished
战国时期历法上的重大成就是[ ]
A、定出一年12个月
B、创造出殷历
C、发明了夏历
D、定出一年24节气