During the break, Ken was     1     games on his mobile phone. Some classmates were standing around him and talking. “It seems that people now can’t live     2     mobile phones. What will the mobile phone be     3     in the future?” One of them suddenly asked. “I think it will be as thin as paper. And we can charge it by putting it in the sun,” Andy said first. Kelly     4     with Andy. She said, “Yes, it is really possible. In the future, people may leave the Earth and live on other planets. It will be very far, but we can still talk on the mobile phone.     5     do you think? Millie?” “Well, I don’t know. Maybe it will be able to do everything.” Millie answered. “No matter what it will be like, I believe it will become better and better.”

When my grandparents were young, they     1     (write) letters to keep in touch with others. They     2     (use) pens and paper. Their letters were sent by post and it took several days     3     (reach) people. While they were waiting for the reply, they might feel     4     (worry).

Today we write emails     5     (keep) in touch with our     6     (friend). Our emails can reach others in a second and     7     (our) can get a reply in a short     8     (time). We do not use paper     9     (write) emails, so we can save many     10     (tree) and protect the environment.

Zhou Yan, a 12-year-old student, went to the doctor because he     1     (have) “mobile phone disease (疾病) ”. A lot of teenagers are getting it because more and more people are     2     (use) mobile phones.

Zhou got his mobile phone five months ago. He spent too much time     3     (play) with his mobile phone. He sent messages     4     his friends with it all the time. Zhou started to do     5     (bad) in exams than before. His mom got very angry     6     him, but he didn’t stop playing until his arms hurt (疼痛).

Yang Ling, a doctor, says that if someone uses his mobile phone too much, he might     7     (get) “mobile phone disease”. If teenagers find     8     (they) arms or fingers hurt, they should go to the doctor as     9     (quick) as they can. Yang says playing phones is     10     (health) for the mind and the body so that teenagers should use mobile phones less.

Mobile phones are more important than ever in the daily lives of students, but how they use them has changed greatly in the past six years.

P    1     most surprising is how l    2     time students spend talking on their phones these days. Six years ago the average student spent 36% of their mobile phone time making or r    3     calls. In 2014, only 10% of time was used for talking. When students use their phones to c    4    , more and more often it is done by using chat software like QQ or WeChat.

“Communication is still an important f    5     of mobile phones. But now mobile phones are being used more for entertainment than for communication,” said Dr Harry Lectre, the research leader.

Much of what we know and believe has been taught to us by others. We often accept information without spending much time     1     it over ourselves.

Nowadays, we are presented with lots of     2     ideas and beliefs (信念), but many of them are often contradictory (自相矛盾的). Psychologists (心理学家) tell us that if we hear about a specific belief enough times, or if it comes from someone we respect, we will probably decide that the belief is true. In these cases, we base our opinions on the opinions of     3    . If we don’t come to our own conclusions, we become nothing more than parrots.

Some people believe whatever they read and then share the story     4     the internet without thinking about the facts. All it takes is one quick click of the “share” button and the story travels on its     5     to influence more unthinking readers. This can cause serious problems.

If we think more about     6     we see and try to form our own opinions, we will be more thoughtful, independent and creative. But     7     of us take the time to do this. Becoming aware of this fact is the first step toward changing our behavior. Hopefully, we can learn to judge what we read     8     hear on our own and make more reasonable decisions.

Can you imagine life without smartphones and Wi-Fi? Most of us probably think it is     1    . However, in Green Bank, a small town in the U.S.A., people are living such a life.

Green Bank is home to a large radio telescope (射电望远镜). It is used to study the universe. Radio waves (无线电波) from the ground will     2     the work of the telescope. For this reason, residents (居民) there are not     3     to have smartphones, Wi-Fi, microwave ovens (微波炉), etc. They can only use a pay phone (公用付费电话) or a landline (固定电话)     4     they need to make phone calls.

Today, Green Bank has about 180 residents. Many of     5     actually don’t find life inconvenient. A boy said he liked going to his his friends’ houses to talk to them or share delicious food     6     them. Even if people are not at home, they can     7     find each other somewhere in this small town.

Another resident said she was happy to talk to people face-to-face. This gives her the     8     to shake their hands or give them a hug. She really enjoys living without smartphones and Wi-Fi.

Years ago, if a teenager had some problems in his life, he might write them in the diary. But now a teenager may go online and write his     1     (每日的) feelings in a micro blog(博客). Diaries and micro blogs     2     (两者都) remind the writers of what happened to them     3     (在) a certain day. But what makes micro blogs different from diaries?

One of the biggest differences is that micro blogs attract more attention, while diaries are too     4     (私人的). Nowadays people are     5     (积极的) in writing micro blogs than diaries. They want others to read the things about them as many as possible. Also, a few special or interesting micro blogs can be     6     (传播) widely and become famous. As they write more micro blogs, their fans may     7     (增加) as well. Therefore, some people may show the moments when they feel happy, some may share the     8     (幽默的) stories or experiences, and some even write     9     (小说) in their micro blogs.

If people are caring about what they write and     10     (谁) may read it, micro blogs are without doubt a good way to write about their life.

Years ago, if a teenager had some problems in his life, he might write them in the diary. But at     1     (现在), a teenager may go online and write his     2     (每日的) feelings in a micro blog (微博). Diaries and micro blogs both remind the writers of what happened to them on a certain day. But what makes micro blogs different from diaries?

One of the biggest differences is that micro blogs attract more     3     (注意；关注), while diaries are too personal. Nowadays people are     4     (积极的) in writing micro blogs because they want others to read the things about them as many as possible. Also, a few special or interesting micro blogs can be     5     (传播) widely, and become famous. As they write more micro blogs, their fans may     6     (增加) as well. Therefore, some people may show the moments when they feel happy, some may share the     7     (滑稽有趣的) experiences, and some even write     8     (小说) about themselves in their micro blogs.

If people are caring about what they write and by     9     (谁) it may be read, micro blogs are     10     (确切地) a good way to write about their lives.