Which of the following would require real-time processing______

A．Playing a computer game

B．Executing a program that predicts the state of economy

C．Printing labels

D．Listening the music

下列现象或事实可用同一原理解释的是( )。

A．浓硫酸和浓盐酸长期暴露在空气中浓度降低
B．氯水和活性炭使红墨水褪色
C．漂白粉和水玻璃长期暴露在空气中变质
D．乙炔和乙烯使溴的四氯化碳溶液褪色