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.

At present, major parks across the US are facing a     1       (grow) problem. From getting too close to wildlife to camping in off-limit areas, more and more visitors     2     (break) park rules. In July alone, park rangers handled more than 11,000 incidents at the 10 most visited     3       (nation) parks. 

Record numbers of visitors at Yellowstone National Park, in Wyoming, have caused problems. Visitors stray from     4     (mark) paths. They break park rules in order to take selfies     5     wildlife, getting too close to elk, grizzly bears, and bison. As drivers slow    6     to snap pictures of the animals, traffic backs up. 

The breaking of park rules comes from disbelief among visitors     7     they will get hurt, said Yellowstone Superintendent Dan Wenk. More than 52,000 warnings were issued at Yellowstone in 2015, up almost 20 percent from the year before. That     8     (worry) the National Park Service. 

As the number of visitors increase, the group is working     9     (protect) national land for future generations. The top 10 parks, including Yosemite in California and the Grand Canyon in Arizona, hosted almost 44 million people last year. That’s a 26 percent increase from a decade     10     (early).

At present, major parks across the US are facing a    1    (grow) problem. From getting too close to wildlife to camping in off-limit areas, more and more visitors    2    (break) park rules. In July alone, park rangers handled more than 11,000 incidents at the 10 most visited    3    (nation) parks. 

Record numbers of visitors at Yellowstone National Park, in Wyoming, have caused problems. Visitors stray from    4    (mark) paths. They break park rules in order to take selfies    5    wildlife, getting too close to elk, grizzly bears, and bison. As drivers slow    6    to snap pictures of the animals, traffic backs up. 

The breaking of park rules comes from disbelief among visitors    7    they will get hurt, said Yellowstone Superintendent Dan Wenk. More than 52,000 warnings were issued at Yellowstone in 2015,up almost 20 percent from the year before. That    8    (worry) the National Park Service. 

As the number of visitors increase, the group is working    9    (protect) national land for future generations. The top 10 parks, including Yosemite in California and the Grand Canyon in Arizona, hosted almost 44 million people last year. That’s a 26 percent increase from a decade    10    (early).

The Chinese language has become increasingly popular in the world. More British students chose to take Chinese tests than German in this year’s A levels, showing a great     1     (curious) about the ancient Asian language.

This is the first time that Mandarin     2     (overtake) German at A levels, a British public exam taken by high school students,     3     (make) it the third most popular language in the UK.

A total of 3,334 candidates chose Mandarin     4     their foreign language, up 8.6 percent from 2017,     5    around 3,058 took German A­level, down 16.5 percent year on year.

French and Spanish still remain the most popular foreign languages. The German language     6     (follow) by Russian and Polish.

According to the Office of Chinese Language Council International (Hanban), as of 2017, some 100 million people, excluding native speakers, use Chinese     7     (global), while the number of Chinese teaching centers has surpassed (超过) 70,000.

South Korea has a larger population of Chinese language learners     8    any other country in the world with the number estimated at around 10.6 million. Last year alone, over 170,000 people     9     (sign) up for Chinese language tests, like the HSK,     10    full name is Hanyu Shuiping Kaoshi in Chinese.

The United Nations in 2010 suggested a Chinese Language Day which falls on April 20th each year to celebrate cultural diversity as well as to promote the equal use of all official languages.

With the development of modern technology, people can stay     1     (connect) with their families and friends easily, however far apart they are from each other. WeChat is one of the most     2     (frequent) used means of communication in China. It is reported that the number of the WeChat users     3     (reach) over 1.1 billion so far.

Once joining the WeChat, people can find more and more people start to add them     4     fiends. They don’t have to consider time     5     (zone) when communicating. Another reason why it is so popular is that it costs nothing. It’s also very convenient for people to immediately update     6     they are doing by WeChat.

However, addiction to WeChat will rob people of the time that should otherwise     7     (spend) on something more important. And the many so-called friends on it are not really friends at all, who simply want     8     (put) ads or sell items on Moments. Besides, people on the WeChat are more likely to compare     9     (they) with others, which will make them feel bad when finding some people seem to be     10     (success).

The United Nations is not only committed to protecting people. It     1     (look) after places, too. One of the aims of UNESCO——the United Nations Educational, Scientific and Cultural Organization——which was founded     2     1946, was to protect places of great cultural importance. Its first major task was in the 1950s,     3     it launched a campaign to protect two ancient Egyptian temples. The temples were going to be     4    (complete) flooded with the construction of the huge Aswan Damn. The temples     5    (take) to pieces and rebuilt on dry ground. Fifty     6    (country) donated money to the project.     7    (it) success led to other projects to protect Venice, in Italy, a unique city built on water,     8     Moenjodaro, in Pakistan, one of the cradles of civilization.

If a site is put on the List of World Heritage in Danger, it means that it will receive money from the World Heritage Fund     9    (help) protect it. However, countries must make as much effort as they can to look after their special places and preserve the world’s remaining cultural and     10    (nature) heritages for the future.