最常引起体位性低血压的药物是
A．苯钠普利
B．吲哒帕胺
C．特拉唑嗪
D．胍乙啶
E．氨氯地平
参考答案：D
Textile business has become more and more difficult( )the competition grew.
A．as
B．befor
C．since
D．after
