When we say "we threw something out，" what do we really mean？After all，our waste doesn't just disappear even if it is taken a（1） .So why not recycle it？
Have you ever used newspapers when you clean the windows？If you haven't，please try!I didn't believe it when I（2） （听到）and read that.I thought that they would certainly leave ink（墨汁）or bits of paper behind.Actually，I was so wrong.I have had clearer windows than before s（3） I tried it
When we mention cleaning products，we have to talk about paper towels（手巾）I used （4） to think more paper towels meant a cleaner home.I loved the idea of cleaning with the fresh white paper and then throwing（5） out.But now I know that I have to s（6） using paper towels，because paper towels are a huge waste problem.Cutting out paper towels would save（7） （树），water，air and our money.
Recently.my family and I have started collecting all old （8） （衣服），and then cut them into pieces.Getting one piece to do some cleaning has become our n（9） habit.I thought that it would be such（10） uneasy thing to break a 30﹣year old habit.Whatever，it really is the most meaningful thing that I have done during a long time.
Susan is the daughter of the famous environmental scientist Clark.But the woman has become an environmentalist on her （1）o .
In 1992，the first UN Earth Summit（峰会） was held in Rio de Janeiro.Thousands of people from around the world （2）h for it to talk about the Earth' s tomorrow.Twelve﹣year﹣old Susan and three of her friends formed a group.They raised money to travel to Rio to （3）a the summit.
At the summit，Susan said that the state of the environment （4）w her a lot. "You don't know how to fix the holes in our ozone layer （臭氧层）.You don't know how to bring back forests that once（5）g where there is now desert.If you don't know how to fix the Earth，please stop（6）b it!" The six﹣minute speech silenced all the people and made them fall into deep thinking.
After that speech，Susan began to lead "two lives." On the（7）t days，she was a schoolchild.But during her vacations，she （8）s internationally about the environment.
Now，nearly 30 years has passed since Susan made her Rio speech.Although many of the world's environmental problems have only become （9）w ，Susan does agree that some things are different now.More and more people give voice like Susan because they have realized the importance of the environment.
"Thirty years ago，I was fighting for my tomorrow.Now，I am fighting for the
（10）f of my sons，" says Susan，now a mother of two，who has kept calling people's attention to climate change.
To forgive is a virtue（美德），but no one has ever said it is easy.When someone has deeply hurt you，it can be extremely difficult to let go of your hate.However，forgiveness is possible.People who forgive show less sadness，anger and stress and more hopefulness，according to a recent research.
How should you start to forgive？Try the following steps：
Calm yourself.You can take a couple of breaths and think of something that gives you pleasure：a beautiful scene in nature，or someone you love.
Don't wait for an apology（道歉）.Many times the person who hurt you does not mean to apologize.If you wait for people to apologize，you could be waiting an awfully long time.Keep in mind that forgiveness does not necessarily mean becoming friends again with the person who upset you.
Take the control away from your offender（冒犯者）.Rethinking about your hurt gives power to the person who causes you pain.Instead of focusing on your wounded feelings，learn to look for the love，beauty and kindness around you.
Try to see things from your offenders angle（角度）.If you understand your offender，you may realize that he or she was acting out of unawareness fear and even love.You may want to write letter to yourself from your offender's point of view.
Don't forget to forgive yourself.For some people，forgiving themselves is the biggest challenge.It can rob you of your self﹣confidence if you don't do it.
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Learn to forgive（原谅） |
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Calm yourself |
You can take some breaths and （1） something beautiful. |
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Don't wait for an apology. |
The person who hurt you does not mean to apologize.Remember that forgiveness does not mean it is （2） to become friends again with the person who upset you. |
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Stay away from your offender |
Learn to look for the love，beauty and kindness around you （3） focusing on your wounded feelings. |
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Try to（4） your offender |
You may want to write a letter to yourself from your offender's point of view. |
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Don't forget to forgive yourself. |
For some people，forgiving themselves is the （5） challenge! |
Hi Alice，
My name's Zhao Ming and I'd like to be your pen friend.I'm 16 years old.I have two little brothers.They're very （1） （love）.I often help my parents look （2） them in my spare time.My mother （3） （work） in a toy shop.She loves （4） （she） job.And my father is （5） engineer.He is busy every day， （6） he tries to spend more time with us.
I'm in the school basketball team.We usually play （7） （match） on Saturday mornings.Last week we played against another school.They ran （8） （fast） than us.However.we had better teamwork.Finally，we（9） （win）!How happy we were!This is the （10） （eight）time we beat them.
Could you tell me something about you？Please write.
Best
Zhao Ming
Dear Mary，
I've already gotten your e﹣mail.I'm very glad that you are interested in the cultural relics （文物） of China.Let me tell you something about it.
If you want to learn about the cultural relics of our country，you may consider visiting museums or（1） （read）books.Now there is a new way（2） （learn）about the cultural relics.It is to watch a CCTV show（3） （name）National Treasure.Do you want to know more about the new way？Just read on.
National Treasure is a popular show（4） Sunday.It has ten episodes（集）.It shows twenty﹣seven treasures from（5） （ninth）museums across China.
After it first（6） （show）on December 3，2017，it soon became popular.Yu Lei，the（7） （direct）of the show，said that it made national treasures come "alive".
（8） it's a show about old relics，it looks very new and modern.There is a large LED screen on the stage （舞台）.The screen will show every detail（细节）of the treasures.
The show tells the stories and history behind the treasures.It also invites famous actors to act out（9） （this） stories on the stage.The actors even use modern words and sentences in their performances.
A lot of people love the show and they are the fans of National Treasure.One of the fans said，"National Treasure really brings museums and cultural relics（10） people in a modern and interesting way."
So much for National Treasure.Let's talk about it face to face next time.I'm looking forward to seeing you soon.
Yours，
He Ting
Zu Chongzhi was one of the greatest mathematicians（数学家） in ancient China.He was born during the Northern and Southern（1） （ dynasty）.From a young age，Zu was taught natural science，astronomy（天文学），math and so on.The little boy was （2） （ interest） in all of these subjects，especially in （3） .
Zu was best known for his calculation（计算） of pi （π）.According to the record，he did all the work using nothing but wooden sticks. （4） took him lots of time to work out the value —（5） 3.1415926 and 3.1415927.No one at that time was able to do better than Zu.And now the achievement is still praised by people around the world.In order to remember Zu，some mathematicians suggest （6） （call） pi"Zu Lv".
Zu was successful not only in math，but also in astronomy.He worked out that a year should be 365.24281481 days long and created the Daming Calendar. （7） ，government officials at that time did not agree with Zu.The great mathematician （8） saw his calendar put into use.Almost ten years after his （9） （die），the new calendar was finally accepted.
Zu was an inventor，too.He once made a vehicle（车辆） （10） carried a pointer （指针）.No matter how the vehicle turned，the pointer always pointed to the south.
