Many people think of guys as being carefree when it comes to their appearance. But in fact, a lot of guys spend plenty of time in front of the mirror. They care just as much as girls do about their body image.

    Body image is a person's opinions and feelings about his or her own body and physical appearance. {#blank#}1{#/blank#}You appreciate your body for its capabilities and accept its imperfections.

    {#blank#}2{#/blank#}Here are some ideas.

    Recognize your strengths. Different body types are good for different things. What does your body do well? Maybe your speed, strength, or coordination makes you better than others at a certain sport. That may be basketball, table tennis, mountain biking, dancing, or even running. Or perhaps you have non-sports skills, like drawing, painting, singing, playing a musical instrument, writing, or acting. {#blank#}3{#/blank#}

    Exercise regularly. Exercise can help you look well and feel good about yourself. Good physiques (体形) don't just happen. {#blank#}4{#/blank#} A healthy habit can be as simple as exercising 20 minutes to 1 hour three days a week. Working out can also lift your spirits.

    Respect your body! Practicing good habits regular showering; taking care of your teeth, hair, and skin; wearing clean clothes, and so on can help you build a positive body image.

    {#blank#}5{#/blank#} Your body is just one part of who you are. Your talent for comedy, a quick wit (智慧) and all the other things make you unique. So try not to let small imperfections take over.

    The new study shows that we spend more time using the mobile Internet reading newspapers or magazines or doing some other things. According to the European Interactive Advertising Association(EIAA), the average European spends 4.8 hours reading newspapers and magazines but 1.6 hours more using the mobile Internet a week.

    The EIAA questioned 15,000 people in 15 European countries, looking at how people are using the Internet and its influence on their everyday lives. It found that the mobile Internet is increasingly finding its way into the public awareness. Over 71 million Europeans now have Internet access on their mobile phones. In the UK, 10 million people now access the Internet through their mobile phones and spend 6.3 hours doing so in a week.

    Unsurprisingly, younger generations in the UK are leading the way, with nearly half of the country's 16-to 24-year-olds and a quarter of 25- to 34-year-olds using the Internet, spending 6.5 and 6.2 hours online each week.

     Entertainment plays a main role in our mobile Internet lives, with one in five British people using their phones for online games, a third listening to the online radio and 39 percent watching films, TV or other videos at least once a week. One third of those using an Internet phone said they received videos, images or other multimedia on their mobile, and 61 percent said they passed on contents they received.

    From a communication point of view, 80 percent of those questioned agreed that the Internet had made it easier for them to stay in touch with friends and family.

    Alison Fennah, director of the EIAA, said the mobile Internet use had come to the point that marketers should be looking to develop strategies (策略) that connect with consumers more effectively. “Better devices as well as improved consumer motivation that start coming together in 2011 can make a great difference to extending the online experience.” Fennah said.

    Unlike most other holidays, the history of April Fools' Day, sometimes called All Fools' Day, is not totally clear. The only point in time that can be agreed on as the beginning of this tradition was 1582, in France. Before that year, the New Year was celebrated for eight days, beginning on March 25th. The celebration reached the highest point on April 1st. With the reform of the calendar under Charles IX，the Gregorian calendar(公历，阳历) was introduced, and New Year's Day was moved to January 1st.

    However, because in those days communications were not as developed as they are today, many people did not receive the news for several years. Some people refused to accept the new calendar and continued to celebrate the New Year on April 1st. These backward people were considered "fools" by other people. They  were often sent on "fools" errands(徒劳无益的工作)  or were made the targets of jokes.

    This developed, over time, into a tradition of playing a trick on someone on the first day of April. The tradition eventually spread to England and Scotland in the eighteenth century. It was later introduced to the American colonies of both the Britain and France. April Fools' Day thus developed into an international fun feast, so to speak, with different nationalities specializing in their own kind of humor at the expense of their friends and families.

    As the weather gets colder, we start wearing jackets, and most of us stop thinking about the sun. But the sun's rays can be just as harmful when it's cold and cloudy outside. "Any exposed area of your body can still get sunburned," Dr. Apple Bodemer, an associate professor at the University of Wisconsin-Madison, told Live Science.

    Whether you spend a day on the slopes, skating on a pond or clearing snow out of your driveway, your face is still getting exposed to the sun's radiation in the form of ultraviolet (紫外线) (UV) light, which can go deep into your skin cells causing DNA damage, according to Bodemer.

    The sun's long ultraviolet A (UVA) waves can cause earlier aging, sunspots and wrinkles, while its short ultraviolet B (UVB) rays are known for causing skin reddening and burns.

    Skin damage caused by UV exposure increases over time. More exposure to radiation contributes to more severe damage, even skin cancer. In addition, snow and ice can also make sun damage worse. They reflect up to 80 percent of UV rays reaching the ground. That means you get hit from both the sky and the ground. And skiers and snowboarders increase their risk of getting sunburned even more because UV exposure increases at higher altitudes.

    "Generally, the biggest factor for sun-sensitivity is how pale your skin is," he said. "But, the reality is that even the darkest individual can get sun damage."

    Luckily, the solution for protecting your skin is simple: Wear sunscreen every day. Rigel recommended using sunscreen with a sun protection factor (SPF) of at least 30, and going higher at high altitudes. As a rule of thumb, SPF 30 will block 97 percent of UVB rays, SPF 50 blocking 98 percent, and SPF 100 blocking 99 percent. Whatever kind of sunscreen you use, it's important to apply SPF about once every 2 hours.

    Rigel also suggested sunscreens with "broad spectrum (光谱)"—to protect against both UVB and UVA rays—as well as sunscreens that are water resistant for up to 80 minutes. That way, you can go about your day without it wearing off too quickly.

    It is common to see many different kinds of insects while spending time outside in the summer. Some of them do not trouble people and can even add beauty to the natural environment. Other insects can harm the environment or humans. The population of these insects seems to stay large and healthy.

    But scientists say this does not appear to be true for some flying insects that serve an important purpose. There is growing evidence that these insects are decreasing across the world.

    One researcher looking into the present insect population is Doug Tallamy, a professor at the University of Delaware. He remembers walking through Washington D. C., in the past when it was "alive with insects, especially butterflies". Now, he said, "The flying insects are actually gone." Wilson said this point seemed to be proved during a drive he made last year from Boston to Vermont. He was surprised that, during his trip, he counted only one insect that had hit the car's front window. Several other scientists have carried out similar tests by checking how many insects hit their cars while traveling.

    While researchers admit this method is not scientific, they say it can still help them understand the changing flying insect population. There have not been many studies done on the flying insect populations covering large areas. However, some international research suggests a downward turn. In 2006, a group of studies showed that there had been a 14-percent drop in ladybugs(瓢虫) in the United States and Canada from 1987 to 2006. In Germany, a 2017 study found an 82-percent drop in the number of flying insects compared to levels recorded in 1990.

    After the German study, other countries also started looking into the problem. David Wagner of the University of Connecticut says other evidence leads him to believe the findings of the 2017 study are "clearly not a German thing".

    "The calm before the storm" is a very familiar expression. It is usually used to describe a peaceful period just before a very stressful situation or a tense argument. {#blank#}1{#/blank#} They noted that before certain storms the seas would seem to become calm and the winds would drop.

    But why is it often so calm before a storm? {#blank#}2{#/blank#} According to US website HowStuffWorks, a calm period occurs because many storms, tornadoes and hurricanes draw in all the warm and damp air from the surrounding area. As this air rises into the storm clouds, it cools and acts as "fuel for the storm, like petrol in a car."

    Once the storm has taken all the energy it can from the air, it is pushed out from the top of the storm clouds and falls back down to ground level. {#blank#}3{#/blank#} So once it covers an area, it causes a calm period before the storm.

    {#blank#}4{#/blank#} First count how many seconds there are between a flash of lightning and a clap of thunder, roughly three seconds equal one kilometer. A good judgement is that if your count is below 30 seconds, you should seek shelter straight away.

    However, due to the complexity of storm system, calm doesn't always go first. So, your best bet is to keep yourself updated with weather reports for any predictions regarding a coming storm in your area. {#blank#}5{#/blank#}

A. Science has given us the answer.

B. There is no definite answer to the question.

C. Weather reports sometimes cannot be trusted.

D. British sailors coined the phrase in the late 1600s.

E. As the air declines, it becomes warm and dry, which is stable.

F. The Weather Network has a tip for working out how far away a storm is.

G. That's the most reliable way to predict the next display of nature's temper.