I ________ ride a bike when I was seven years old. [ ]
A. may
B. might
C. can
D. could
答案:D
缓释包衣材料()。
A.CA
B.HPMC
C.PVPP
D.HPMCAS
E.PVP
一个建设项目需要征收的土地,应当根据总体设计一次申请批准,不得化整为零。 ( )