Have you ever asked yourself why children go to school? You will     1     (probable) say that they go to learn languages, history, science and some other knowledge. That’s quite true, but do you know why they learn these     2     (thing)?

We send our children to school to prepare them    3     the future when they grow up and have to work for     4     (they). Nearly everything they study at school has some practical use in their life. But is that     5     only reason why they go to school?

Actually, there is more in education than just    6     (learn) facts. We go to school above all to learn how to learn, so that when we graduate we can continue to learn.     7     a man really knows how to learn, he will be     8     (success). Because when he has to do something new, he will not only be able     9     (do) it well himself, but he will also be able to teach others how to do it in the     10     (good) way. So the purpose of schools is not to teach languages, history, science, etc., but to teach students the way to learn.

Nowadays the virtual choir is popular with people.They have the opportunity     1     (sing) together with hundreds of other people.Anyone can take part in a virtual choir from anywhere—all you need is a video camera and     2     Internet connection. They record themselves when     3     (perform) alone on video.These videos     4     (upload) onto the Internet, and then put together into one video.The virtual choir has proved to be a positive influence on the lives of many people.Eric Whitacre, the creator of the virtual choir，fell in love     5     music in the university.In 1997, he received a master’s degree in musical composition.Over the next 10 years, Whitacre’s original compositions began to become popular.This led to the    6     (create) of the virtual choir.In 2009, Whitacre received a video of a girl     7     was singing one of his works.     8     (inspire), he founded his first virtual choir. Since then, the virtual choir     9     (become) a worldwide phenomenon. The virtual choir is making the world a     10     (good) place.

It's time to reconsider food. Around the globe, food problems threaten wildlife, wild places and the planet itself. Today, 7. 3 billion people consume 1. 6 times     1     the earth's natural resources can supply. By 2050, the world's population     2       (reach) 9 billion and the demand for food will double.

So how do we produce more food for more people without     3     (expand) the land and water already in use? We can't double the amount of food.       4     (fortunate), we don't have to—we just have to double the amount of food available now instead.       5     short, we must freeze the footprint of food.

In the near- term, food production is enough to provide for all, but it doesn't reach everyone who needs it. About 1. 3 billion tons of food     6     (waste) each year—four times the amount     7     (need) to feed the more than 800 million people who are     8     (hunger) .

By improving efficiency and productivity while reducing waste and shifting consumption     9     (pattern), we can produce enough food for everyone by 2050 on roughly     10     same amount of land we use now.

With the rapid development of the Internet, more and more teenagers make friends online nowadays. Some people say it's good to do that, while others think it's     1     (harm) especially to school pupils.

Some consider that making friends online is a modern way to share friendship     2     others. They can express their thoughts     3     (free) to improve social skills and fluency in English. On the contrary, some strongly believe it is     4     waste of time to make friends through online communication and what's worse, those so-called “friends” are likely to cheat you after     5     (gain) your trust.

In my opinion,     6     the Internet is good or not depends on how we use it. If it     7     (use) properly, we can communicate with people that come from every corner of the world, and share life experiences. Of course, however, since the Internet was born, many bad men     8     (make) use of it to do something bad. So we must learn     9     (determine) true or false and avoid being hurt.

In conclusion, every coin has two     10     (side). So does the Internet. If used in a proper way, the Internet has more advantages in seeking friendship.

A great fire has destroyed the old cathedral (大教堂) of Notre Dame (巴黎圣母院) in Paris, one of France’ s     1    (famous) landmarks.

Thousands of people gathered in the streets around the cathedral, watching the flames in silence. Some of them could be seen crying. Watching such a famous old building     2    (destroy) is extremely     3     (shock) to any French person.

No other site represents France like Notre Dame Cathedral,     4     receives almost 13 million visitors each year, more than the Eiffel Tower. The Eiffel Tower, is little more than a century old while Notre Dame Cathedral     5     (stand) tall above Paris since the 1200s. It has given     6     (it) name to one of the country’s literary masterpieces. Victor Hugo’s The Hunchback of Notre Dame (《钟楼怪人》) is known     7    the French simply as Notre Dame de Paris.

The three large rose windows have been destroyed     8     the fire. Fortunately, the main structure,     9    (include) the two bell towers, has been saved. Also the most     10    (value) cultural relics have survived.