If you need to call your parents but your smartphone(智能手机) is not with you, can you remember their numbers? To remember 11 numbers is not difficult. _______, many of us can't because of the smartphone. What's more, people are not good at giving directions and face-to-face talks because of smartphones. Even when friends are having a meal together, it's common to play with their phones. Smartphones weaken（削弱） our skills in many ways.
According to a study, Chinese people spend about 170 minutes on their smart phones every day. For students, spending much time on smartphones isn't good for their study. The study shows children who spend more than four hours a day on their phones get much worse grades in school tests than those who play with their phones for 30 minutes.
It's true that the smartphone makes our lives easier. But many people also think spending too much time on it is bad for their study or work. People are trying to change that.
People make a new game called Forest. It lets users plant a seed that grows into a tree over the next 30 minutes. During it, users can't use their phones, or the tree will die.
There is a restaurant in the USA. It gives people a discount(折扣) if they don't play with their smartphones during a meal. Owner Mark Gold said that he hoped it gave people a way to enjoy their meal and talk with friends and family.
Because of the smartphone, people have fewer face-to-face talks.
If people don't play with their smartphones during a meal in a restaurant in the USA, they will pay money than usual.
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