工人每天做200件衣服,30天可以做多少件?
200×30=6000(件)
Do you know when _________ he ________ the Football Club ? And how long ______ he _______ it ?
A.did join ; has been
B.did join in ; have been a member of
C.did join ; has been in
D.has joined ; has been a member of
当直线y=kx与曲线y=e|lnx|-|x-2|有3个公共点时,实数k的取值范围是[ ]
A.(1,+∞)
B.[1,+∞)
C.(0,1)
D.(0,1]