When you take a walk in any of     1     cities in the west, you often see a lot of people walking with dogs. It is still true that the dog is the most useful and faithful animal in the world. But     2     reasons why people keep     3     dog have changed. In the old days, people used to train dogs to protect themselves against the attacks by other beasts. And later they came to realize that the dog was not only useful but willing to obey its master. For example, when people used dogs for hunting the dogs would not eat what they caught without permission. But now people in the city need not protect themselves against attacks of animals. Why do they keep dogs, then? Some people keep dogs to protect themselves from robbery, but     4     most important reason is for companionship. For a child, a dog is his best friend when he has no friends to play with; for young couples, a dog is their child when they have no children. So     5     main reason why people keep dogs has changed from protection to friendship.

On 20 December, a series of huge waves caused by     1     undersea earthquake raced across the ocean near Goldshore and left thousands     2     (die) . Luckily, due to a ten-year-old girl's basic knowledge of tsunamis, Goldshore Beach became the only local beach     3     (survive) the disaster without any loss of life.

On that day, people were walking, running or simply sitting on the sandy beach, enjoying the warm sea air and the soft wind that brushed their hair     4     something odd happened. The water was frothy, like the bubbles on the top of a beer. It wasn't calm, instead, it was just coming in and in.     5     (see) this, the little girl named Sabrina realized that these were the     6       (sign) of an approaching tsunami. Though     7     (frighten), she kept her head and warned her parents and a safety officer     8     the danger. At last, the beach was     9     (rapid ) cleared of people just before the huge waves     10     (crash) into the coast.

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.

Close to 70 percent of the world’s population will live in cities by the year 2050. Experts warn that population     1    (grow) will worsen housing crises in some areas.

Large cities around the world already struggle with housing problems. In some neighborhoods, rising house prices have forced     2     poor from their homes. Many poor people now live in shelters or on the street.

People     3    (move) to large cities now not just for high-paying jobs. Many are also looking for the chance to live and work with other people, career opportunity and access to much     4    (good) resources. Some countries have built new capital cities     5    (help) ease overcrowding. These efforts help, but do not solve the problem.

The report says that by 2030, the world will have had 43 very large     6    (city), each with more than10 million people.

Tjada McKenna,     7     is chief operating officer for an aid group, says that the ability to own a home in many countries is often difficult,     8    (especial) for women and minority groups.

Every city is different in     9    (deal) with development problems. Each one has its own economic forces at work and its own history. Experts say that answers     10     the housing crisis and other problems must be developed city by city.

Formed in 2002, the China International Search and Rescue Team（CISAR）brings help and hope to those     1     lives are changed by natural disasters．

The team went on its first international rescue mission in 2003．It was the first time that a Chinese team     2    （work）outside China, and the team won high praise     3     their bravery and skill．The list of people to whom help has been given ever since     4    （be）long．The team treated more than 3,000 people who were injured in the 2006 earthquake in Indonesia, and spent several months     5    （give）aid to over 25,000 victims of the 2010 floods in Pakistan．

Rescue workers     6    （train）to find people, treat injuries, and hand out food, water, and other supplies．There is     7    （usual）no electricity or water after a disaster and diseases and accidents may appear．    8    （save）lives, rescue workers have to work day and night, and sadly they must also bury     9     dead, which means they have to be strong in both body and mind．Rescue workers must have big hearts, too．Of course, they’ll have to take     10    （effect）measures in action．The members of the CISAR are always ready to go wherever help is needed．

Teen faints after skipping meals

Jennifer Jones, a 15-year-old teenage girl, passed out in her morning PE lesson yesterday and was rushed to hospital. Jennifer was found to have dangerously low blood sugar levels due to     1    （skip）meals. Fortunately, she is now out of danger and will make a full recovery in a day or two. Jennifer's case     2    （be）a reminder of the dangers of the unhealthy weight-loss     3    （habit）that have become common among teenagers of both sexes In a society     4    being thin     5    （see） as being beautiful, teenagers sometimes turn to extreme methods     6     （slim） down quickly.

Health experts are concerned and are increasing their efforts to educate teenagers about the side effects of losing weight too quickly. They have also warned them     7     using such extreme methods. One of the experts pointed out that it is important for teenagers to have a healthy     8    （balance） diet, keep regular hours and get plenty of exercise to stay     9    （energy）and fit. The experts strongly encourage all teenagers to follow these lifestyle tips, because living well is     10    safest and most effective way to get into shape.

Hello，I’m Helen.I’m introducing you to one of the most famous     1    (theatre) in the world，     2    you can hear and see wonderful performances of opera and ballet.It’s the Royal Opera House.The Royal Opera House was built in 1858.And it     3    (be) actually the third theatre that we have had on this land at Covent Garden.The first theatre was built in 1732，and it burnt down in 1808.The second one was built in 1809 and it burnt down in 1856.

But it’s not just the     4    (build) that makes it     5    (impress); it’s also the performances on stage that make it an amazing place     6    (visit). The Royal Opera House is home     7    two companies，the Royal Ballet and the Royal Opera.They are both full－time here，and they give almost 300 performances of opera and ballet every year.

The Royal Ballet and the Royal Opera have dancers and singers from all over     8    world.In recent years，we’ve had two famous singers from China—Zhang Liping and Dai Yuqiang.

There are some cheap tickets     9    (offer) there，but the number of them is limited，so I think the best thing to do is buy     10    (they) in advance.