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Whatever the reason you're breaking up with your best friend, always remember that he or she was once super important to you. Take the time to sit down privately and tell him/her what's going on and why. Don't send him or her an unpleasant e-mail or just start ignoring (不理睬) him or her. In fact, maybe he or she has known there's a problem and would be willing to have a heart-to-heart chat. If you're not sure about wanting an end forever, you could suggest you two take a break from each other. If, after a while, you realize why you became the best friends in the beginning, you can try getting back to your former behaviors. Whatever you do, be honest about your feelings while having respect for his or hers. And if you both agree the BFF thing is over, make sure not to be enemies.

But that's not what I see at Drexel University where I teach. Most of my students talk to their parents three times a day or more. One student's mother called her son because she didn't hear from him for a few days. The son was in the library so he whispered "hello". The mother doubted that he was drinking, and insisted on asking him to take a picture of himself. Holding a newspaper with that day's date, the son had to take a photo of himself and sent it to his mother in order to prove that he wasn't telling a lie.

I always think that my students should depend on themselves. I tell them that I will not check whether they miss classes and finish homework or not. Because they are independent thinkers and they should take responsibility for their own choices.

But their parents don't treat them like me. I know a mother. She puts her eyes on her son too much. She hopes he will walk by the camera so that she can know what he is doing. Another mother checks her son's credit card daily. However, I never do that. My daughters only come to me with important things when they need my decision. I think that's because I give them space.

Many parents try to find if their kids are hiding from them. But we have to learn to respect boundaries (界限), even when technology is so powerful now. So I am going to do my best not to be a helicopter parent.

When she was only 14 years old, the Chicago girl made her own single-engine airplane by herself. Then at 16, she flew it across Lake Michigan, becoming the youngest person to ever fly her own plane. She recorded this two-year experience and put it on YouTube.

Completing her study in Illinois Mathematics and Science Academy (IMSA) in 2010, she entered Massachusetts Institute of Technology (MIT).

At first, she had to wait to be accepted into the school but once Professors Allen Haggerty and Earll Murman watched her video, they had no doubt. After just three years at MIT, she has already achieved the highest possible grade point—an average (平均) of 5.0.

She is now studying further at Harvard University, with full academic freedom (学术自由). Once again she is only 23 years old.

What's even more amazing is that she is no longer interested in building planes but has turned her attention to physics, namely black holes and how gravity has an effect on space and time—that is why she is being compared to Einstein and Hawking. And she records all of her work on her website Physicsgirl.

During an interview earlier this year she said, "Look on the bright side about what you believe you can do. When you're little, you say a lot of things about what you'll do or be when you're older—I think it's important not to forget those dreams. You must hold on to your dreams and have a strong will. Work hard and never give up. Your dreams will come true finally!"

To be chosen, we had to turn in an example of our3. I wrote an article about the joys of summer, and showed it to my father, a talented poet. He read it and frowned (皱眉).

"It's okay," my father said, taking out a pencil. "But how about changing this sentence to..." And as a result, he rewrote the whole piece—without me, for I never said anything to4 him.

No surprise—his version was wonderful. He had a gift for language. It was so much better than my piece that I turned in his version instead of mine.

"Welcome to the Dundee School News." my teacher said to me. But before I could be5 about the news, he added, "Based on that excellent article you wrote about summer, I expect you to write an opinion article every week for the second page of the paper."

I was so surprised. I was unable to write at that level, but I couldn't tell the6 to the teacher, and I couldn't ask my father for help, either.

That term working on the paper was really painful. And my teacher expressed his7. "Can't you write something more like that first piece you wrote?" he said each time I turned in my article.

I couldn't, because at that age, I didn't have my father's ability and experience as a writer. Week after week, I tried hard, but my writing never8 the level of the first article.

At last, to my total shame, another student took my place. I9 that my father rewrote my first article himself, instead of trying to help me to improve it. But in my heart I knew it was my fault because I allowed him to do it.

Later, I did become a successful writer on my own. Looking back, I realized that the pain and shame of that school experience had a10 side. It taught me to depend on myself and be myself. So every day, I try to use my own words, find my own style and be my own best self. It feels great.

One day, Caroline had4 great idea. She decided to go to the palace5 to the king. When she rang the doorbell, the king opened the door6. Caroline took a deep breath and asked the king with a nervous smile, " Can….Can I use your huge kitchen to cook meals7 kids?"

The king thought for a second. Then he agreed to let Caroline8 his kitchen for two hours. Caroline jumped for joy at once. She picked9 vegetables from her family's vegetables garden. Then she10 all of them to the palace.

After a while, the king smelt the smell of cooking11 from the kitchen. So he wanted to go in to see12 Caroline cooked food.13Caroline saw him, she asked him to taste the food that she was cooking.14 delicious food it was!

From that day on, the people in that town had a happy king. They15to the parties in the palace. And the king shared his big table full of delicious food with the poor.

Humans may live on another planet one day! That seemed (possible) years ago. But now the idea may come true. According to Stephen Hawking, the British scientist, we(human) only have about 1, 000 years to live on earth. It means that humans(fly) to another planet in 1, 000 years. 

In fact, we have found one red planet—— Mars(火星). Experts have found that there is water on it. The idea of (live) there looks possible. Thanks  science, the steps to Mars are getting faster and faster. 

For example, in 2013, Dutch experts started  first plan to put humans on Mars in the 2020s. They (give) people one-way tickets to go and build a new home on Mars. it is dangerous, over 200, 000 people still want to take part in it. 

In September, American experts showed another plan to get humans to Mars in six years. They're working on building larger and stronger rockets to carry (many) people. They are also doing a lot of preparations to help people get back to the earth. 

I'm looking forward to living on Mars. Will you join (I)?

In the future,(科技) will play a more important role. With the development of the transport (系统), travelling will be more efficient. We can see robots(到处). They may replace humans in some jobs. Futurists predict that even in challenging (任务), robots with high intelligence can perform well. For example, in a disaster or an (突发事件), they can help us.(此外), they might also influence our daily life and (创造性) work. So, it's impossible for us to ignore(忽视) the power of these new (搭档). 

However, creativity and emotional intelligence are still valuable (品质). Although there may be (挑战), we should accept these changes and use technology to create a better world. 

Here is the car of the future! This car is very 1 from today's cars—— it is silent and clean. Today's cars have wheels, 2 this one does not. It moves like a snail(蜗牛), but much 3 than a snail!

This car will use electricity instead 4 gasoline(汽油). It can be recharged(充电) very 5 from chargers built into the road. 

It will also be very easy to 6 . In fact, you won't need to drive it because it will drive 7 . You will just need to tell the computer"Go to X" and the car will go there. Also, it will 8 your destination(目的地) very quickly, much faster than today's cars. It will also be very safe and comfortable. 

Now scientists are making new materials for the surfaces of 9 . Eighty years from now, perhaps sooner, some 10 roads will have solar energy panels(太阳能板). They will store the 11 under the road and some cars will be able to use it. 

However, you will probably 12 drive a"snail car", even if you' re over 18 today. This, perhaps, is the car of the year 2100 and maybe your grandchildren will drive it. 

Driving will be nice in the 22nd century! No pollution, no terrible 13 , and no stress(压力). Scientists have lots of 14 about cars of the future. It must be very interesting to see these ideas 15 . 

Plants, animals, and (人类) are deeply connected. This (联系) is the most important part of our world. 

Plants are like nature's factories. They (存储) energy from the sun and turn it into food.(没有) plants, we can't (想象) a world where we can get fresh air to breathe. 

Animals also play a big (角色). They help with the growth of plants by spreading(传播) seeds. Some animals are even important for pollination. Without these(行为), many plants would disappear. 

We are part of this web too. We build homes in a world where plants and animals can live. If we don't (保护) them, they will be in great (危险). For example, when we cut down too many trees, we will destroy the homes of many animals. 

So, we should try our best to get on well with plants and animals. After all, we all share this planet, and we should keep it (健康). 

On a cold sunny day, I sat in my car and watched dolphins swim in the sea. 1 , I saw some dolphins were beached(搁浅). It was very 2 for them to be out of water. I knew they needed help. 

3 thinking too much, I jumped out of my car and ran to the beach. I first called the police but their 4 were far away. It was a life-or-death moment for the dolphins. I didn't know 5 to help them, so I put a message on the Internet. I hoped someone could see it and come to 6 those lovely animals. 

Minutes later, three teenage boys from a nearby school came first. It was like light that drove the darkness away. Then more and more people 7 . We decided to save the smaller dolphins first and worked together to move them back to the 8 water successfully. 

To my surprise, 9 the smaller dolphins were saved, none of them left. They stayed in the water and made strange sounds to encourage the other dolphins. After we 10 the rescue(救援) work, all the dolphins raised their heads from water and swam around to show their 11 to us. Then, they swam back to the deep sea. 

It touched me a lot and made my heart 12 . The dolphins had a great sense of 13 each other when there was trouble. I realized that our volunteer group was just like the dolphins. On such a cold day, 14 cared about getting wet or dirty. We tried our best to save the dolphins and made sure everyone was safe. 

People can always 15 our friends—— animals. I will never forget this experience.