Weather has a strong effect(影响) on people. It influences health, influences health(智力), and feelings.

    In August, it is very hot and wet in the southern part of the United States. Southerners have heart trouble and other kinds of health problems during this month. In the northeast and the Middle West, it is very hot at times and very cold at other time. People in these states tend to(趋向) have heart trouble after the weather changes in February or March.

    The weather can also influence intelligence. For example, in a 1983 study by scientists, the IQ scores of a group of college students were very high during a hurricane(飓风), but after the storm their scores dropped 10%. Storm can increase intelligence. Very hot weather, on the other hand, can lower(降低) it. Students in many schools of the United States often do badly on exams in the hot months of the year.

    Weather also has a strong influence on people's feelings. Winter may be a bad time for thin people. They usually feel cold during these months. They might feel sad during cold weather. In hot summer weather, on the other hand, fat people may feel unhappy. At about 18℃, people become stronger.

    Are you feeling sick, sad, tired, forgetful（健忘）, or very intelligent today? The weather may be the reason.

    In the Olympic history before no city has hosted both the Winter and Summer Olympics. Now,Beijing will be first the city doing it.

    After hosting the Summer Olympics in 2008 China will hold the 2022 Winter Olympics. On July 31st,2015，China beat Kazakh rival(对手) Almaty in a surprisingly close vote(选票).

    In 2008 Beijing shut down many factories to reduce pollution，and the cost of hosting the Summer Olympics was $44 billion. During the 2022 Winter Games, however, Beijing hopes to show a greener China，with only $3.1billion.

  Beijing plans to use several playgrounds from the 2008 Olympics, including the Bird's Nest and Water Cube. But the Wand sliding events would be in Yangqing and Zhangjiakou,60 and 140—kilometers away from Beijing.

    Beijing was seen by the IOC as a safe, reliable (可靠的) choice because it offered great commercial (商业的) opportunities in a new winter spors market.

    “It is really a safe choice," IOC President Thomas Bach said,"We know China will keep its promises."

    Once, when the food we ordered at a restaurant arrived, the first thing we wanted to do was to eat right away.{#blank#}1{#/blank#} Others want to take at least five photos of their food to share on social media, such as Wechat.

    {#blank#}2{#/blank#} “Foodtography” has been around for longer than one would expect. Take US photographer Irving Penn (1917-2009) for example. In 1947, Vogue magazine published many food photos taken by Penn. Looking at the carefully put salad ingredients or the cakes on stands(货 架), it would be easy to think Penn's 70-year-old photos were taken just last week.

    Besides Penn's efforts, it seems that social media is behind the recent rise of foodtography.

    {#blank#}3{#/blank#}And the star posts just one delicious-looking food picture with the place where it was taken. It can bring hundreds of new customers for the restaurant.

    So while it's fun to share pictures of delicious dishes with your friends, just remember the most important thing:{#blank#}4{#/blank#}

A. Don't forget to eat your meal afterwards.

B. But now, some people just want to eat their meal.

C. Today, a social media star may have thousands of fans.

D. In fact, taking pictures before meals is not a recent thing.

    Mother's Day is celebrated in the USA. It is also a holiday in some other countries. It is on the second Sunday in May. It is a day to thank mothers. On that day mothers usually receive flowers or cards. On the cards, children will write "Thanks, Mom"， "To the best mother in the world", "Best wishes for Mother's Day" and so on. We should make mothers happy on that day.

    Where does the idea for the holiday come from? We should thank Miss Anna M. Jarvis. She brought up the idea of having such a day. She lived in West Virginia. Her mother died on May 9th, 1905.She had a deep love for her mother. She wrote letters to some important persons. In her letters she asked them to decide a day for all mothers. Then Mother's Day was made on the second Sunday in May by the USA in 1913.

    In China, children give presents to their mothers on Mother's Day, or the whole family go out and try to do something nice for their mothers. Mothers always think of others more than themselves. They love their children and families very much. Everybody should show his love to his mother and help her as much as possible.

    Information Card

Five Ways to Fight Germs（细菌）

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    If you have a cold or flu，you'd better not pass it on to anyone else. Just use a napkin every time you sneeze or cough. Put used napkins in the dustbin.

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    Always wash your hands with running water and soap before you cat anything，after you use the bathroom and after you sneeze（打喷嚏）or blow your nose. The germs won't stand a chance.

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    Stations, hospitals, supermarkets are places filled with germs that make people sick. When people cough or sneeze, the germs spread widely, landing here and there.

    Unless it's necessary, go out less often.

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    You should always buy pets from a good pet shop and take them to the animal doctor regularly. Keep pets as clean as possible and always wash your hands after you play with them.

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    When you go food shopping, buy all the things for the fridge, and put them away as soon as you get home.

    Always prepare for food with clean hands.

    Science is about asking questions. A science fair project is an experiment or a research effort. Through such a project, you learn how to find problems and how to solve them.

    A science fair project includes at least three parts: the display poster board, the exhibit (展览) materials, and the written report.

    The display poster board

    The display poster board is very important. It is what people first see. As a kind of "advertisement" for your project, it must be carefully designed. Usually, the board should include the key points of your research.

    The exhibit materials

    These materials can be the most exciting part of any science project. They usually include the items you used in your project. Together, they tell a story. People should be able to understand your project on their own through these materials.

    The written report

    No matter what you do, you need to record your findings in a written form. The written report should include all the information you collected while you were working on your project. The report may also include your understanding of the topic you choose.

    A science fair project is an experiment or a research effort, {#blank#}1{#/blank#} at least three parts. First, the display poster board is of great {#blank#}2{#/blank#}. There are some key points of your research on it. So it must have a {#blank#}3{#/blank#} design. Second, the exhibit materials can be the most exciting part of a science project. People should be able to understand your project {#blank#}4{#/blank#} through these materials. Third, it is {#blank#}5{#/blank#} to record the things you found in a written form. The written report includes not only all the information you collected but also your understanding of the topic you choose.