Mobile phones are becoming more and more popular not only with{#blank#}1{#/blank#}(grown-up) but also with students. Meanwhile,they also{#blank#}2{#/blank#}(become) a problem for middle schools in the past few years.Some children have got mobile phones{#blank#}3{#/blank#}Christmas or birthday gifts,and more will still want them.

    Many like SMS because it is{#blank#}4{#/blank#}(ease) and quick.Some parents felt happy because they could communicate with their children.Some teachers said mobile phone use{#blank#}5{#/blank#}(be) a distraction（分心的事）to students during school hours and{#blank#}6{#/blank#}also gave them much trouble in their classrooms.Sometimes students might use phone messages{#blank#}7{#/blank#}(cheat) during exams.A new study found that some teenagers sending messages in class even hurt their fingers because they can't stop{#blank#}8{#/blank#}(send) SMS.

    Many teachers suggested that students should not have phones at school,but if there was a good reason,they could leave their phones at school office.And even they can use the telephone in the teachers' office instead.Many people think they understand the reason{#blank#}9{#/blank#}parents would want their children to have them,but they agree schools should tell the students{#blank#}10{#/blank#}(use) their mobile phones at proper times.

    Parkour（跑酷）is a sport which trains people to deal with any physical obstacles in their path. It is not a competition but a physical training. A person joining in parkour is called traceur. Traceurs run along a path and use only their bodies to deal with the obstacles in the most efficient way. Parkour pays more attention to efficiency{#blank#}1{#/blank#}(make) it different from the similar practice of free running. Parkour{#blank#}2{#/blank#}(common) includes running, jumping, climbing, rolling and other similar types of physical movements. Many teenagers think that parkour is quite {#blank#}3{#/blank#} cool sport. They have great interest in it.

    The {#blank#}4{#/blank#}(invent) of parkour can't {#blank#}5{#/blank#}(give) to one person because many people have worked on it. A French officer developed the earlier form of parkour. The term “parkour” was first introduced by David Belle and Sebastiar Foucan in the early 1980s{#blank#}6{#/blank#} that time, they were two teenagers. This sport {#blank#}7{#/blank#}(become) more popular in the1990s when many films were made on it.

    {#blank#}8{#/blank#} makes parkour different from other sports is its power to bring people together. It allows traceurs to forget the {#blank#}9{#/blank#}(society) and other problems, and makes a large group work and grow together instead of competing with each other. People can benefit from parkour as it can make them stronger. Still, it also influences one's thought process by improving self-confidence and critical-thinking skills. In this way, parkour allows one to deal with {#blank#}10{#/blank#}(difficulty) in daily life if he or she deals with them through parkour.

You Are a Time Traveler

    Time travel has long fascinated people. Traveling to the past or future would allow you to live in exciting periods of history or get a glimpse(一瞥) of {#blank#}1{#/blank#} the future holds. Think about it. If you could travel in time, where would you go? Perhaps you would voyage far ahead of the present day {#blank#}2{#/blank#} (meet)your future self! What about watching an original performance of {#blank#}3{#/blank#} Shakespeare play in Elizabethan England? Or maybe you would pay a visit to {#blank#}4{#/blank#} (you)as a baby.

    Since these ideas are universally appealing to everyone, it is {#blank#}5{#/blank#} (nature)that time travel interests so many writers, filmmakers, and scientists. It has been depicted in a {#blank#}6{#/blank#} (various) of media, such as literature, film, and science reports. But you might be surprised to realize that {#blank#}7{#/blank#} the smallest sense of the term, we are all time travelers. Even as you sit here {#blank#}8{#/blank#} (read)this article, time is racing forward. The future becomes the past as soon as it happens. The present is so fleeting(稍纵即近)! Everything you do quickly {#blank#}9{#/blank#} (become) part of the past, and so it is that we move through time. The famous scientist Albert Einstein, assigned a mathematical formula to this idea, {#blank#}10{#/blank#} is called The Theory of Relativity.

    The Wandering Earth is a Chinese science fiction movie, {#blank#}1{#/blank#} is based on the novel of {#blank#}2{#/blank#} same name by Liu Cixin, and was released on February 5, 2019, the Chinese New Year's Day.

    After learning the sun is dying out ,people all around the world feel {#blank#}3{#/blank#} (panic), so they build giant planet thrusters(星球推进器) to move the earth out of its orbit and sail {#blank#}4{#/blank#} to a new star system. The 2500 years' journey comes with unexpected dangers, but in order to save humanity, a group of young people come out bravely and fight hard for everyone's {#blank#}5{#/blank#}  (survive).

    We {#blank#}6{#/blank#}(impress) to see the theme of this film. It does not particularly show somebody's ability to save our world {#blank#}7{#/blank#} shows all the human beings are working together,  {#blank#}8{#/blank#} (spare) no effort to save this world.

    The Wandering Earth is seen by people {#blank#}9{#/blank#} the dawn(开端) of Chinese science fiction movies. It means that China's sci-fi movies have {#blank#}10{#/blank#} (official) set sail.