When making agreements and limits on technology with your children, remember they will feel more willing     1     (follow) the rules when you do, too. Telling your children to avoid screens if you     2     (lose) in one is likely to lead     3     a quarrel. As a parent, it's of     4     (important) to be a good role model for your children in everyday life. Play sports together, have fun in nature and participate in the     5     (activity) they love, to help accept play both inside and outside of your home. When stepping away from technology     6     (become) a family attempt, all family members are     7     (close) connected. They spend quality time with one another,    8         can't be achieved through any screens. In short, teach children to live     9     happy life offline. And just do     10    now!

A model of China's future double-decker bullet train (双层动车) was displayed by the Chinese Academy of Sciences on Monday, with experts     1     (say) it could reach very high speeds.

Zhang Weihua,     2     bullet train expert, told Science and Technology Daily that the double-decker bullet train will be able to run at the same top speed as a fast single-deck train. But an important problem     3     needs to be solved is that it may lose stability when turning at     4     (extreme) high speeds. But he believes that once design and technical problems such as the train's high center of gravity and large passenger capacity (容量)     5     (solve), the     6     (safe) will be fine when the train operates at proper speeds. Recently Germany and France     7     (plan) to use double-decker technology in the next generation of high-speed trains     8     the goal of improving passenger capacity and economic effectiveness.

China's double-decker bullet train, which is made     9     (aim) at the international market, will have a base speed of 160 km/h. However, when fitted with core components (核心组件) designed according to the current standards for high-speed trains, it will be capable of much     10     (high) speeds.

Nowadays, more and more people have chances to travel, study, work or even live abroad. It is necessary for you to keep in mind these general    1    （rule） for polite behaviour.

If you    2    （invite）to an American friend’s home for dinner, first of all, arrive on time（but not early）. When you’re invited to someone’s home for a meal,    3    is polite to bring a small gift. Flowers or candies are always appropriate. If you have an attractive item    4    （make）in your native country, your host or hostess would certainly enjoy receiving that as a gift.

    5    （wear） proper clothes and a beautiful smile is simply not enough. Table manners are also of great    6    （important）. Do not open your mouth to talk, unless you have swallowed your food. Also chew food with your mouth    7    （close）. When you want to get the food that is at a distance, do not stretch your hands to reach    8    it. Instead, ask for the food to be passed to you.

Don’t leave    9    （immediate ） after dinner, but don't overstay your welcome, either. When your friends seem to be getting tired and running out of conversation, take their behaviour as a signal to leave. The next day, call or write    10    thank-you note to say how much you enjoyed the evening.

China is widely known for its ancient civilization     1     has continued all the way through into modern times. There are many reasons why this has been possible.

At the beginning, written Chinese was     2     picture-based language. Ancient Chinese people carved     3    （ symbol） on animal bones and shells. By the Shang Dynasty, a well-developed writing system had come into being. At that time, people lived in different places,    4     （ lead） to many varieties of dialects and characters.

Emperor Qinshihuang united the seven major states into one country where the Chinese writing system began to develop     5    one direction. The writing system was of great     6    （important） in uniting the Chinese people and culture. Even today, wherever Chinese people live or whatever dialect they speak, they can communicate    7     （free） in writing.

Written Chinese has also become an important means by which China's present is connected with    8    （it） past. People in modern times can read classic works that    9    （write） by Chinese in ancient times. The high regard for the Chinese writing system can be seen in the development of Chinese characters as an art form,    10    （ know） as Chinesecalligraphy, which has become an important part of Chinese culture. Today, the Chinese writing system is still an important part of Chinese culture.

One day just before closing time, John rushed into    1     TV store to buy a color TV setwith the money he     2     (save) for three months. The friendly shop assistant was waiting for the day's last and     3     (twenty) customer to reach her sales target for her bonus,     4    she warmly greeted John and showed him the various     5     (model) on display. She asked John to see     6     clear and colorful the image on the screen was. At that moment, a new commercial advertisement came onto the screen,     7     (introduce) a popular brand of camera as well as some beautiful pictures it had taken. The camera     8     (attract) John. He     9     (sudden) changed his mind and told the shop assistant “Thank you for the TV commercial advertisement. Now I have to hurry to the camera store     10     (get) that camera.”

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．

Many have heard of shark’s fin soup. This famous and expensive dish is     1     (especial) popular in southern China.     2     do you realize that you’re killing a whole shark each time you enjoy a bowl of shark’s fin soup? When people catch sharks, they cut off their fins and throw the shark back into     3     ocean. Without a fin, a shark can no longer swim and slowly dies.

This method is not only cruel, but also     4     (harm) to the environment. Sharks are at the top of the food chain in the ocean’s ecosystem. If their numbers drop too low, it will bring danger to all ocean life. Many believe that sharks can never be endangered because they are the    5     (strong) in their food chain. But in fact, around 70 million sharks     6     (catch) and traded in this industry every year. The numbers of some kinds of sharks     7     (fall) by over 90 percent in the last 20 to 30 years.

Environmental protection     8     (group) around the world, such as Wild-Aid and the WWF, have asked governments to develop laws     9     (stop) the sale of shark’s fins. So far, no scientific studies have shown that shark’s fins are good     10     health, so why eat them? Help save the sharks!

Lang Ping and Mchael Jordan are famous masters shaking up the sports world.

Lang Ping led     1     women’s volleyball team of China to medals at world     2     (championship) and the Olympics. When they were preparing for the 2015 World Cup, her determination     3     (test). One of the best players got injured, and the team captain left because of heart problems.     4     (lose) two important players didn’t get Lang Ping to lose heart. She believed that her young players could win if they worked together     5     a team. And she really made it. Two weeks later, they were world champions!

Michael Jordan,     6     (know) as “Air Jordan”, changed basketball with his graceful moves and jumps. It was not his skills     7     his mental strength that made him unique. Jordan says that the secret to his     8     (succeed) is learning form his failures. He learnt much from losing games and practised much     9     (hard). In life, Jordan has learnt to give back to society. The Boys and Girls Club which he started in Chicago     10     (help) young people since 1996.

The ancient town of Fenghuang is a place with beautiful village life in rural China. Having travelled directly from the busy city, I regard Fenghuang as a better     1     (choose) to have a breath of the fresh air.

When I paid     2     visit to Fenghuang, it was July. My friend and I     3    (excited) explored, walking along the ancient wall and crossing the beautiful, old bridges. People there were very     4    (relax). They were neither troubled by the hot weather nor by the tourists, walking, eating and playing outdoors.     5     the first evening we bought spicy, cold noodles and ate on the riverbank as we watched the sunset.

We stayed in a small hotel     6     was similar to many of the traditional     7     (building) in the village. Our room was built on high stilts(桩子) over the banks of the river. From our window we could hear the rush of the water and the sounds of excited tourists     8     (travel) in small boats downstream. We saw people at work busy catching fish and young children playing in shallow waters.

Although there     9     (be) many visitors to Fenghuang, we did not see any other foreigner during our stay. After several days, I was still unwilling     10    ( leave).

People send birthday wishes using cards and postcards in many cultures. It’s not known when and where the tradition of     1     (send) birthday cards began, however, it is believed     2     it was in England in the early nineteenth century. In those days people sent birthday cards because they couldn’t wish somebody     3     happy birthday in person.

In 1840, the first postage stamp was issued in Britain and sending birthday cards became     4     (cheap) and therefore more popular. The     5     (develop) of colour printing processes in the 1930s also helped to increase sales of cards.

Today usually cards     6     (give) with a present, even when people can send     7     (they) wishes in person. In recent times, e-cards have also become popular: many people are starting to use these instead of traditional cards as they are free, environmentally     8     (friend) and arrive more quickly. So will e-cards take the place     9     paper cards in ten or twenty years? Probably not. For young children and old people or for very formal occasions, e-cards are not proper and some people     10     (simple) don’t use the Internet.