治风寒咳嗽、痰多气逆宜选用()
A．川贝枇杷露
B．半夏止咳糖浆
C．川贝清肺糖浆
D．二母宁嗽丸
E．复方枇杷叶膏
参考答案：B
Air bags for cars were invented _____ lives. Without them more people would be injured in car accidents.
A．saving
B．saved
C．to save
D．to have saved
微型计算机中的内存储器，通常采用______。
A．半导体存储器
B．磁表面存储器
C．光存储器
D．磁芯存储器
