【单选题】A Phone that Knows You're Busy It's a modem conundrum: you're too busy to be disturbed by incessant phone calls so you mm your cell phone off. But if you don't remember to turn it back on when you're ...
A.
You turn off your cell phone but forget to turn it back and miss important calls.
B.
You are too busy to make phone calls and miss important information.
C.
Too many calls are annoying, affecting your work efficiency.
D.
Too many calls are disturbing, producing serious noise pollution.