A major source of teen stress is school exams，and test anxiety is not uncommon.When you recognize your teen is under stress，how can parents help your teen stay calm before an exam?

    Be involved.Parents need to be involved in their teen's work. {#blank#}1{#/blank#} What they look for is your presence­to talk，to cry，or simply to sit with them quietly.Communicate openly with your teen.Encourage your teen to express his/her worries and fears，but don't let them focus on those fears.

    Help them get organized.{#blank#}2{#/blank#} Together，you and your teen can work out a time­table in which he/she can study for what he/she knows will be on the test.

    Provide a calm setting.Help your teen set up a quiet place to study and protect his/her privacy.Give them a nutritious diet.It's important for your teen to eat a healthy，balanced diet during exam times to focus and do his/her best.{#blank#}3{#/blank#} If this happens，encourage your teen to eat light meals or sandwiches.A healthy diet，rather than junk food，is best for reducing stress.

    {#blank#}4{#/blank#} Persuade your teenager to get some sleep and/or do something active when she needs a real break from studying.Making time for relaxation，fun，and exercise are all important in reducing stress.Help your teen balance her time so that she will feel comfortable taking time out from studying to spend time with friends or rest.

    Show a positive attitude.{#blank#}5{#/blank#}Your panic，anxiety and blame contribute to your teen's pressure.Make your teen feel accepted and valued for his/her efforts.Most importantly，reassure your teen that things will be all right，no matter what the results are.

A．A parent's attitude will dictate their teen's emotions.

B．Exam stress can make some teens lose their appetite.

C．They will only make the situation worse.

D．Encourage your teen to relax.

E．The best thing is simply to listen.

F．Help your teen think about what he/she has to study and plan accordingly.

G．Your teen may also make negative comments about themselves.

    Do you love traveling? If the answer is yes, then have you ever thought about why? You may argue that traveling can help you enrich your knowledge, especially geographical and historical learning. It will provide more chances for you to enjoy food and try on clothes that you otherwise cannot possible have. A famous English author Francis Bacon (1561-1626) makes a point when he says that, “Travel, in the younger sort, is a part of education; in the elder, a part of experience.”

    Evidence of leisure travel can be traced as far back as ancient Babylon. This year, according to the World Travel & Tourism Council, the 1 billionth tourist will cross an international boundary before the end of this month. That means that one in seven people on the planet traveled this year, something that would not have been possible a few decades ago. Around 20 years ago only the rich could travel.

    While the US and France remain the two largest destinations for world travel, experts say much of the explosive growth in tourism has been to countries like Guatemala, the Dominican Republic, and the Ivory Coast, which weren't even on the world tourism map a decade ago. The top five destinations in the world, according to the United Nations World Tourism Organization, are Paris, London, New York, the Mediterranean, Turkey.

    Several factors have led to the boom in world travel. The prosperity (富裕) of people in Asia is one factor. People in Asian developing countries have lifted their incomes above middle-class levels in the past few years. And a lot of them have used their new wealth to travel. In addition, travel costs have been reduced thanks to the rapid development of transportation, and competition between airlines to give customers the best prices.

    Native to America, the cane toad (癞蛤蟆) was introduced to Northern Queensland 70 years ago to control sugarcane beetles (甘蔗害虫). The toads failed in that duty but spread across Queensland and into neighboring northern areas.

    Now it calmly invades(侵略) the stats of Western Australia and New South Wales ( NSW). NSW wildlife experts fear the amphibians － which have poisonous backs that kill hungry predators (食肉动物) 一will have a terrible effect on native animals.

    Those fears may be about to be realized. Australia's leading government research body, the Commonwealth Science and Industry Research Organization (CSIRO), forecasts that a rise in average temperatures will make NSW an ideal living place for the cane toads.

    Tony Robinson, head of CSIRO's Wildlife, Pests, and Diseases Program, said climate change is increasing the amount of suitable living place for the cane toads.

    “With climate change, the cane toads might go down as far as Sydney and some areas of Western Australia,” Robinson said.

Recent estimates put the pace of the toads' westward march at nearly 17 miles (27 kilometers) a year and slightly slower from north to south.

    “More southerly (南部的) cities, such as Melbourne and Adelaide, would likely remain too cold and dry to ever suit the toads,” Robinson noted, “but Perth could expect cane toads in five years' time.”

    Sydney could see their arrival in the next 20 years.

    Robinson said there is no method that will keep the toads under control.

    The cane toads already cover at least half of Queensland and most of the northern country. The toads are believed to number in the billions.

    A Venezuelan virus was tried in the 1990s but had to be given up after it was found to also kill native frog species. Scientists and governmental bodies believe a national approach is needed.

    The main threat the toads cause to species such as dingoes, and crocodiles is the poison contained in glands (腺) on each of their shoulders. The poison sprays out when the toads are threatened or handled roughly. The poison is made up of 14 different chemicals.

    Cane toads also compete, and usually win, the hunt for food and living space.

    "”If the government and other states combine resources, I believe we can achieve a very practical biological-control research program,” Bums said.

    A telescope, called Gaia, is being designed by astronomers in Europe, and it couldn't be more different from Pan-STARRS, which is another telescope being designed. While Pan-STARRS will be looking for asteroids (小行星) and comets headed for Earth, Gaia will be looking at our entire galaxy (银河系).

    Gaia is designed to draw a map of the Milky Way, our home galaxy. Just as a map of your town gives you a picture of where things are located, Gaia's map of the galaxy will tell astronomers where the stars are. Over five years, Gaia will observe (观察) about a billion stars and other objects in our galaxy. Each object will be observed about 70 times.

    Gaia will be sent into space connected to a rocket. It contains two telescopes, each focused at a different angle (角度). These two telescopes act like Gaia's “eyes”. The reason why humans can see things in 3D is that we have two eyes focused on the same object, at slightly different angles. By using two telescopes like eyes, Gaia can produce the first 3D map of the positions of the stars it views.

    Gaia, which is to be sent into space, will be a powerful telescope. If you were to use it on Earth, for example, you could stand 600 miles away from your best friends and still get a clear picture of their hair.

    Gaia is one of more than a dozen telescopes being designed by scientists right now. The next generation of telescopes will reveal new parts of our universe that will seem surprising. The universe, with all its planets, stars and other strange objects, is a puzzle with pieces that we can see by using powerful telescopes.

    Big Ben is not the name of a man. It is the name of a huge(庞大的)clock in London. London is the capital of England. This clock has four faces. So，no matter where you stand, you can read the time on the face of Big Ben. Each face is the size of a double decker(层)bus. The hands are about four metres long. It is about the size of two people standing on top of each other. If you go to London, you may want to visit the Houses of Parliament(国会大厦). There you will find Big Ben sits at the top of the clock tower(塔)in the Houses of Parliament. Maybe you will hear it as well as see it. The huge clock makes such a loud noise. "Ding dong, ding dong, "it goes every quarter of an hour.

    The clock was named after a big man. He was Sir Benjamin Hall. This man did much building work in London many years ago.

It is very small, but it is really helpful. It can help you keep away from viruses (病毒) . You must bring it with you very often these days. 1 is it? Of course, it is a mask (口罩). To make masks fun and easy to wear, people around the world think of many interesting and special 2 .

Wear a smile

Masks cover (遮盖) our faces, 3 they can't cover our smiles. A French company makes masks with smiles on 4 . You can still show your smile to 5 when you go out.

Eat with me

A 6 in Japan teaches people to make special masks. When eating or 7 , people can change their masks in half. Look! A napkin (餐巾纸) is on the mask. People can put a spoon into their mouth. The napkin 8 like a mask to stop viruses.

Let's be fashionable

Fashion brands (品牌) make some beautiful masks. Look at this one. The mask is full of beautiful pictures 9 many flowers. Butterflies are flying around the flowers. Does it make you think of a beautiful garden? It can make you 10 and bring you great fun.