针对面向对象类中定义的每个方法的测试，基本上相当于传统软件测试中的（）。

A．集成测试

B．系统测试

C．单元测试

D．验收测试

---I don’t know_____________?---In ten minutes.

A．how long has he been here

B．how long will the film last

C．how often he goes to visit his parents

D．how soon the film will begin