用高级语言编写的程序称为（）。
A.目标程序
B.可执行程序
C.源程序
D.编译程序
参考答案：C
________ mothers can't come to the meeting because they have gone to Dalian.
A．Sally's and Jane
B．Sally and Jane's
C．Sally and Janes'
D．Sally’s and Jane's
前药的主要特征是什么？
