空调与通风系统调试时，主要考核的设计指标有()。

A.空气温度 

B.相对湿度 

C.气流速度 

D.噪声 

E.空气含氧量

— Why are you watching a football match? 

—  ________ [ ]

A. It's exciting.

B. I have a football.

C. I'm at home.

D. I watch football matches at night.