After a long journey, we arrived in Jiuzhaigou late at night. The tour guide {#blank#}1{#/blank#}(tell) us its name was from the nine Tibetan villages distributed along the valleys,{#blank#}2{#/blank#} had the reputation of “fairyland on earth”.

    The guide collected us at 8 am {#blank#}3{#/blank#} next morning. Then we set off.

    Jiuzhaigou was famous {#blank#}4{#/blank#} the 118 beautiful lakes and the many astonishing waterfalls (瀑布). Clear streams in the valleys collected in beautiful blue lakes, while in some places they collected into waterfalls. The lakes were pure enough{#blank#}5{#/blank#}(see) to the bottom, and they provided fantastic reflections of the facing trees and mountains. This{#blank#}6{#/blank#} (real) was a place to lose a day in.

After the{#blank#}7{#/blank#} (amaze) visit to the valley, we were treated to a well made singing and dancing show about Tibetan life. The{#blank#}8{#/blank#}( performer) had beautiful traditional clothes, provided by {#blank#}9{#/blank#}(they) families.

    When the sun set, I found that time slipped away, and the tour was over. Although I hadn't explored all the sights, I felt able to enjoy the heavenly {#blank#}10{#/blank#}(beautiful). It's absolutely different from UK. Oh, beautiful Jiuzhaigou, goodbye!

    Several days ago, a letter attracted a lot of attention on the Internet. It was written to NASA by 9-year-old Jack Davis {#blank#}1{#/blank#}(ask) to be considered for a job working with astronauts. He wrote to apply {#blank#}2{#/blank#} a planetary protection officer position at NASA. Despite his young age, he thought he would be fit for the job {#blank#}3{#/blank#} (perfect).

    With a pencil, he wrote: “I may be nine, but I think I would be {#blank#}4{#/blank#} good fit. My sister says I am an alien. Also, I.{#blank#}5{#/blank#} (see) all the space and alien movies in the past years.” Jack ended the letter stating the other {#blank#}6{#/blank#} (factor) that would make him perfect for the position, such as his great video game skills and his youth,{#blank#}7{#/blank#} would make it easy to learn to think like an alien. He then signed the letter, “Jack, Guardian of the Galaxy.”

    The position of planetary protection officer is well-paid every year. The job, however, is more about science and biology and {#blank#}8{#/blank#} (little) about fighting aliens. The officer must make sure that no new species or plants {#blank#}9{#/blank#} (bring) to other planets, and doesn't return from trips to space with anything that might harm Earth. The recent announcement of the position created in the 1960s has caused a lot of {#blank#}10{#/blank#} (excite) in the public, according to a NASA's statement.

    Scientists found that air pollution may be responsible {#blank#}1{#/blank#} a significant reduction in intelligence. The research conducted by the World Health Organization (WHO) in China {#blank#}2{#/blank#} (show) that air pollution led to big falls in test {#blank#}3{#/blank#} (score) for languages and arithmetic. The study is called "The impact of exposure to air pollution on cognitive (认知的)performance ". It was published in the Proceedings of the National Academy of Sciences journal. The study took place over four years. Researchers analyzed speaking and arithmetic tests taken by 20 000 people of all ages. They said, "Polluted air may prevent cognitive ability {#blank#}4{#/blank#} people become older.”

    The study is a warning to the rest of the world, {#blank#}5{#/blank#} (especial) to those in cities. Over 91 percent of the world population live in areas with {#blank#}6{#/blank#} (poison) air and air pollution is the {#blank#}7{#/blank#} (four) highest cause of global deaths. Researchers discovered that {#blank#}8{#/blank#} longer people were exposed to polluted air, the greater their intelligence went down. They said air pollution caused a year's worth of lost education. For those {#blank#}9{#/blank#} were over 60 years old, this could be several years. A researcher warned, "There is no shortcut {#blank#}10{#/blank#} (solve) this issue. Governments really need to take effective measures to reduce air pollution."

    Chinese Kung Fu is an important part of traditional Chinese culture. It is probably one of the {#blank#}1{#/blank#}(early) and longest lasting sports in the world, {#blank#}2{#/blank#} uses both strength and brain. Over its long history, Kung Fu {#blank#}3{#/blank#}(develop) as a unique combination of exercise, self-protection and art. {#blank#}4{#/blank#} dates back to ancient times when people used tools {#blank#}5{#/blank#} (fight) against wild animals and gradually got experience in self-protection.

    {#blank#}6{#/blank#}(normal), an athlete in sports like track and field and ball sports retires in his or her 30s. Besides, injuries at a young age can affect our ability to keep {#blank#}7{#/blank#} (do) exercise in later life. In Chinese Kung Fu, however, it is {#blank#}8{#/blank#} different story. It {#blank#}9{#/blank#}(say) that Kung Fu not only exercises your physical body but also trains your spirit and your mind. And we can continue later in life when our {#blank#}10{#/blank#}(body) weaken.

    How to prevent being infected with the virus? There are a number of standard hygiene (卫生) practices {#blank#}1{#/blank#} have been recommended to protect against infection and {#blank#}2{#/blank#} (far) spread. These include covering your mouth and nose when coughing or sneezing with a medical mask, tissue or flexed elbow; avoiding contacting with those who are unwell {#blank#}3{#/blank#} (close); the appropriate use of masks and personal protective {#blank#}4{#/blank#} (equip), especially in a healthcare setting; washing hands regularly with water and soap, {#blank#}5{#/blank#} alcohol-based hand sanitizer (洗手液). {#blank#}6{#/blank#} (action) that can be taken to prevent infection from an animal source include: avoiding unnecessary unprotected contact with animals; washing hands after contact with animals or animal products; and ensuring that animal products are cooked thoroughly before they {#blank#}7{#/blank#} (consume).

    It is important{#blank#}8{#/blank#} (stay) home if you're feeling unwell. But if you have a fever, cough, and difficulty {#blank#}9{#/blank#} (breath), seek medical care early and share your previous travel history {#blank#}10{#/blank#} your healthcare provider.