For me；walking around in my own personal bubble is perfect.__2__ What's even better，wearing earphones seems to give a signal to people which says，“I'm not available for chatting at the moment！”

　　Suppose，you're at work and about to make an incredible breakthrough，but a colleague suddenly turns up.At this precise moment，the slightest disturbance would break your concentration.__3__ Once again，those wires hanging from your ears would be sure to give that “Go away！” signal.

　　__4__ It's probably part of the growing up stage when they just want to ignore their whole family.While their mothers give them lectures about why they should do their “Yes，Mum”．Problem solved.

　　Pretty soon，not only will we have pretty colored wires hanging from our ears，but also our brains will be directly plugged into some new high－tech instruments.We'll be in a virtual(虚拟的) world，communicating with everyone else，or choosing not to，as we like.In this world，we will all be permanently plugged in.__5__ And they are changing our social habits along the way.

　　In the end，there is a thin line between using technology as a tool for making life better and being a slave to it! It's so strange—suddenly，I don't feel like wearing my earphones anymore.

　　A．Our instruments are changing quickly.

　　B．I also have wires hanging from my ears.

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