— Where did you go ________ vacation?
— I went to New York City.
A:to
B:of
C:on
D:for
She seems ____ (真诚的),but I don't trust her anyway.
正在患病毒性肝炎的人,属于( )
化简: .
关于压强的概念,下列哪种说法是正确的( )