因其“色渥如丹、灿若明霞”而得名的是()。
A.丹霞地貌
B.岩溶地貌
C.花岗岩地貌
D.喀斯特地貌
参考答案:A
— Did Jim ride his bike to school this morning?
— He _____ come to school by bike. He hasn't found his bike yet.[ ]
A. may
B. mustn't
C. can
D. can't
泛水系屋面防水层与垂直墙交接处的防水处理,其常见高度为()。
A.120
B.180
C.200
D.250