属脂溶性维生素的是( )
A.维生素B1
B.维生素C
C.维生素D
D.维生素B6
E.维生素PP
参考答案:C
Not recognizing me at first, __________.
A.he closed the door
B.the door was closed
C.the door was close
D.I closed the door
回声强度分为4种,即____________、__________、__________及___________等。