26. According to the arrangement, the newly-elected president _______a speech to his supporters from  8 to 10 o’clock tomorrow morning .

A．is giving

B．will be giving

C．gives

D．will have given

软件测试中，发现错误产生的原因依赖于所使用的调试策略，而主要的调试方法包括动态测试、静态测试和 【3】 。