.If their marketing plans succeed, they ____ their sales by 30 percent.

A．will increase

B．have been increasing

C．have increased

D．would be increasing

在软件工程中，白箱测试法可用于测试程序的内部结构。此方法将程序看做是______。

A．循环的集合

B．地址的集合

C．路径的集合

D．目标的集合