生物半衰期(T1/2)表示药物在体内清除多少所需的时间
A．1/3B．1/4C．1/2D．1/5E．1/6
参考答案：C
You can put the medicine you like, on condition that the children can’t reach it.
A．in which
B．wherever
C．the place
D．the place where
床温联锁给煤机跳闸的值是多少？
