Do you ever pull your phone out of your pocket, thinking it is vibrating （振动） , only to find that it isn't?
This phenomenon, which scientists call " phantom （幻觉的） phone vibration" , is very common.Around 80% of people surveyed say they have imagined their phones vibrating when they were actually still.
So, what leads to this universal behavior? According to the BBC, the explanation lies in your brain's ability to discover signals from the outside world.
When your phone is in your pocket, there are two possible states: it is either vibrating or not.Meanwhile, you also have two possible states of mind: the judgment that the phone is vibrating, or that it isn't.
Ideally, you match the four states correctly.However, sometimes your brain decides that the consequences of missing a call are more serious than a "false alarm".Therefore, you become more sensitive to vibrations so that you don't miss anything.
This is just like the fire alarm in your home --- it can be annoying when it goes off in response to just a tiny bit of smoke.But that's a small price to pay compared to a fire really breaking out because the alarm fails to alert you.
Now, you might still ask: why can't our brains just make every judgment correctly without being too sensitive to false signals?
The answer is that your brain bears a heavy burden every day.“You get a large amount of sensory information that's coming from your eyes, ears and skin, and you can't deal with all that information all the time," Michael Rothberg, a researcher at Baystate Medical Center in Springfield, US, told Live Science.
For example, the rustling （ 沙沙声） of clothing or the growling （咕咕声） of your stomach may both lead your brain to believe that they come from the vibration of your phone -it is like trying to hear your name being called in a noisy room.
So, perhaps you should just check your phone whenever you think it's vibrating.It's not too much trouble to do that, is it?
According to this passage, phantom phone vibration _____.

A．is common among people with mental problems

B．can measure people's ability to collect information

C．happens when our brains react sensitively to false signals

D．helps our brains to make quick and accurate decisions

According to Michael Rothberg, which is mainly responsible for phantom phone vibration?

A．A noisy background.

B．A lack of much attention.

C．A heavy burden every day.

D．An overflow of sensory information.

Why is the fire alarm used as an example in this passage?

A．To help us understand the cause of phantom phone vibration better.

B．To show us the fire alarm is as sensitive as the phone vibration.

C．To tell us the phone vibration usually happens when a fire breaks out.

D．To convince us it's important to check our phones like checking a fire alarm.

What does the author suggest we do about phantom phone vibration?

A．We should always fully believe our own sense of listening.

B．We should just check our phones whenever we think they're vibrating.

C．We should ignore the vibration bothering when our phones are actually still.

D．We should think of the vibration carefully before we make correct judgments.