Why are mobiles so popular? Because people love to talk to each other. And it is easier wi

Why are mobiles so popular？ Because people love to talk to each other. And it is easier with a mobile phone. In countries like Russia and China, people use the mobile phone in places where there is no ordinary telephone. Business people use mobiles when they"re traveling. In some countries, like Japan, many people use their mobile phones to send e-mail message and access the Internet. They use a new kind of mobile phone called "i-mode". You can even use a mobile phone to listen to music.

Mobile phones are very fashionable with teenagers. Parents buy mobile phones for their children. They can call home if they are in trouble and need help. So they feel safer. But teenagers mostly use them to keep in touch with their friends or play simple computer games. It"s cool to be the owner of a small expensive mobile. Research shows that teenage owners of mobile phones smoke less. Parents and schools are happy that teenagers are safer and smoke less.

But many people dislike them. They hate it when the businessman opposite them on the train has a loud conversation on his phone. Or when the mobile phone rings in a cafe or restaurant. But there is a much more serious problem. It"s possible that the mobile phone can heat up the brain because we hold the phone so close to our head. Scientists fear that mobiles can perhaps be bad for your memory and even give you cancer.

Mobiles are popular among people because ______.

A．they think mobiles are fun

B．they believe mobiles are safe

C．they love to listen to music

D．they feel it easier to talk to each other