The Silk Road is in fact a     1    (relative) recent term. These ancient roads had no particular name until the mid-nineteenth century; Baron Ferdinand von Richthoften named the trade and communication network the Silk Road. Since then the term     2     (accept) globally.

In the nineteenth century, a new type of travellers stepped onto the Silk Road: archaeologists and geographers, enthusiastic explorers who were eager     3    (look) for adventure. Researchers who came from many countries travelled through the Taklamakan Desert,     4    is now in Xinjiang, to explore ancient sites along the Silk Road,     5    (lead) to many discoveries and studies, and most of all, a renewed interest     6     the history of these routes.

Today,many historic     7     (build) and monuments still stand, marking the passage of the Silk Road through hotels, ports and cities. What’s more, the long-standing legacy of this     8     (impress) network is reflected in a large number of cultures, languages, customs and religions that have developed for many years along these routes. The passage of merchants and travellers of many different nationalities resulted not only in commercial exchange,    9     in a widespread and continual process of cultural interaction. Obviously, it     10     (become) a driving force in the formation of diverse societies.

There comes a time when the old must give way to the new. Finding and     1     (keep) the right balance between progress and the protection of cultural sites can be     2     big challenge.

In the 1950s, the Egyptian government wanted to build a new dam across the Nile     3     (control) floods, produce electricity and supply water to more farmers, but the proposal led to     4     (protest).

After listening to the experts’ opinion, the government turned to the United Nations for help. Then a committee     5     (establish) to limit damage to the Egyptian buildings and prevent the loss of cultural relics.     6     (final), a document was signed, and the work     7     (begin) in 1960.

    8     the project ended in 1980, it was considered a great success. Not only had the countries found a path     9     the future that did not run over the relics of the past, but they had also learnt that it was possible for countries to work together to build a better tomorrow. The spirit of the Aswan Dam project is still alive today.   If a problem seems too difficult for a single nation, the     10     (globe) community can sometimes provide a solution.

There comes a time when the old must give way to the new.     1     (keep) the right balance between progress and the protection of cultural sites can be     2     big challenge.

In the 1950s, the Egyptian government wanted to build a new dam across the Nile     3     (benefit) more farmers,     4     led to protests. The government turned     5     the United Nations for help. Then a committee     6     (establish) to limit damage to the Egyptian buildings.     7     (final) a document was signed, and the work began in 1960.

When the project ended in 1980, it was considered a great     8     (succeed). The spirit of the Aswan Dam project     9     (be) still alive today. If a problem seems too difficult for a single nation, the     10     (globe) community can sometimes provide a solution.

The Internet has become part of young people’s life. A report     1     (show) that 38% of students often use the Internet. Most of them get     2     (use) information on the Internet     3     use the Internet to help in their studies. But many students don’t use it     4     a good way. Some play games too much, and some visit websites     5     shouldn’t look at. So bad things may happen if students spend too much time on the Internet.

It is important for students to use the Internet     6     (proper). Now we have a textbook that uses many examples    7     (teach) students some good ways to use the Internet. It gives them useful     8     (advise).

Some students also make friends on the Internet. But if you want to have     9     face-to-face meeting with your online friends, let your parents     10     (know) and meet in a proper place.

Many parents don’t know how much exercise their children need to do every day to stay     1     (health). The National Health Service guidance states that children     2     are aged from five to eighteen should do one hour of exercise every day, which about seventy percent of adults in the UK never mind. The research of 2,000 adults     3     (find) that only a quarter knew the exercise time recommended for young people.

The Youth Sport Trust leader, Ali Oliver said, “We have seen a drop in young people’s physical activity in recent     4     (year).” It is often     5     (report) that pupils are taken out of PE lessons to prepare for exams.

Meanwhile, figures from Sport England show only 17.5% of children are doing sports continuously. There is also a     6     (differ) among children from various economic (经济) backgrounds, with 39% of those from poor families doing     7     (little) than thirty minutes of exercise a day, compared with 26% from rich families.

This week thousands of people will get together     8     (celebrate) National School Sport Week, with     9    aim of promoting (推进) the importance of exercise and bringing great benefit     10     young people.

A recent survey has found that many people suffer from sleep problems. Some are     1     (able) to fall asleep, some wake up in the middle of the night, and others     2    (simple) do not get enough sleep. One of the reasons why people fail to get a good night’s sleep     3     (be) pressure from school or work. Noise pollution and light pollution in big cities may also contribute     4     sleep problems. In     5     short term, people with sleep problems often feel tired and have trouble concentrating. In the long term, they may be at increased risk of having a poor memory, being overweight and     6     (suffer) a heart attack. Sleep problems are especially dangerous for     7     (teenager). They are still growing and night is the time when     8     (they) bodies grow faster. Teenagers     9     do not sleep well may experience situations where body development slows down, and their health suffers.

So, if you have trouble getting a good night’s sleep, it might be time     10     (make) some changes in your lifestyle.

Here     1     (be) some common “green truths” that have been shown to be only half true, or even     2     (complete) false.

First, paper shopping bags are better than plastic ones. In fact, both kinds of bags are bad     3     the environment. Plastic bags cause litter and are a danger to wild animals,     4     mistake them for food. It takes hundreds of years for plastic     5     (break) down.

However, making a paper bag uses four     6     (time) as much energy as making a plastic bag and up to three times the amount of water.

Second, when you turn off a device, it stops using power. Electricity continues to leak from the device, even when it     7     (turn) “off”. So we should remove the plug from its power supply.

Third, eating local food is good for the environment. In fact,     8     is the production of food that uses most of the energy. In some cases, local produce might have used     9     (much) energy than produce grown a long way away — even taking into account its transport.

Fourth, it’s better to take a shower than a bath. Actually, if you spend more than eight minutes in a shower, you’ll use as much water as in a bath—about 50 litres of water.

Environmental awareness is now part of daily life. But it’s worth     10     (check) common ideas and opinions to see what’s really green.

Eric Whitacre was the first person    1    (come) up with the idea for    2    virtual choir. He began studying music at the University of Nevada in 1988, and then fell in love with Mozart's classical music. In 1995, he graduated from university and received a master’s degree in    3    (music) composition from the Juilliard School in 1997. Over the next 10 years, his original     4    (composition) began to become popular among choirs and singers. In 2009,     5    (inspire) by a video of a girl who was singing one of his works, he asked his fans to make videos,     6    he then joined together into one     7    (perform). Thus his first virtual choir     8    (establish). Since then, the virtual choir     9    (become) a worldwide phenomenon.

The virtual choir has a positive influence     10    the lives of many people. It is a good way for people around the world to sing with one voice and thus make the world a better place.

Located in the northwest of Hunan Province, about 300 kilometers away from Changsha, the capital of Hunan, Zhangjiajie,     1    covers a total area of 9,653 square kilometers, is a tourist city for its unique natural scenery and abundant tourism resources. Zhangjiajie     2    (give) the title of “World Geological Park” in 2004.    3    (actual), Zhangjiajie, honored as “the most fantastic mountain under heaven” and “a walking Chinese landscape(盆景) painting”, is also widely praised as “    4     enlarged potted landscape” “a mini fairyland” and “a maze(迷宫)of nature”, attracting a growing number of tourists     5     home and abroad.  

Since it was discovered in the 1980s, the tourism industry     6    (become) the leading industry in Zhangjiajie, which has stimulated the     7    (develop) of other industries related to tourism. At the same time, eco-tourism has been developed rapidly in Zhangjiajie. When you come to Zhangjiajie, you can fully appreciate     8    (it) magnificent(壮丽的) natural scenery and experience appealing folk custom as well as other thrilling tourist     9    (activity),and you will be deeply impressed by     10    is performed by the minorities there.  

It must be an exciting, joyful and unforgettable tour of Zhangjiajie.