单项选择题
A．They make him feel at home. B．He thinks they should be ignored. C．He believes they are part of our lives. D．He prefers silence to loud noises.
A．Tinkling sound of a coin dropping. B．Clinking sound of keys. C．Tapping sound of his typewriter. D．Creaking sounds.
A．don't care about emergencies B．are used to sirens C．are attracted by sounds D．don't hear loud noises