Maybe a lot of thin people will be worried about their health if the inside fat matters.

    Some doctors now think that the inside fat around important organs like the heart or liver could be as dangerous as the outside fat which can be noticed more easily.

    "Being thin doesn't surely mean you are not fat," said Dr Jimmy Bell at Imperial College. Since 1994, Bell and his team have tested nearly 800 people with MRI to create "fat maps" showing where people store fat.

    According to the result, people who keep their weight through the food they usually eat rather than exercise are likely to have major deposits (堆积物) of inside fat, even if they are thin.

   Even people with normal Body Mass Index (体重指数) scores can have surprising levels of fat deposits inside. Of the women, as many as 45 per cent of those with normal BMI scores (20 to 25) actually had too high levels of inside fat. Men were nearly 60 per cent.

    According to Bell, people who are fat on the inside are actually on the edge of being fat. They eat too many fatty and sugary foods, but they are not eating enough to be fat. Scientists believe we naturally store fat around the stomach first, but at some point, the body may start storing it elsewhere.

    Doctors are unsure about the exact dangers of inside fat, but some think it has something to do with heart disease and diabetes (糖尿病). They want to prove that inside fat does harm to the body's communication systems.

    The good news is that inside fat can be easily burned off through exercise or even by improving your eating habits. "If you want to be healthy, there is no other way. Exercise has to be an important part of your lifestyle," Bell said.

Social media is a platform where people from all over the world can connect and interact with each other. It has become one of the {#blank#}1{#/blank#} (big) platforms ever in history and has changed so many things in our life. Students are also using social media in a number of {#blank#}2{#/blank#} (way).

Social media provides a platform for students {#blank#}3{#/blank#} (learn) and communicate. It makes students' life more convenient {#blank#}4{#/blank#} colorful. Social learning has been involved in almost all the e-learning websites. Students can also take advantage of live video that is a part {#blank#}5{#/blank#} so many social networking sites (社交网站) to take classes.

Social media also offers students {#blank#}6{#/blank#} tool to express themselves.

Many students are scared of the thought of what {#blank#}7{#/blank#} (happen) if they express themselves. And social media {#blank#}8{#/blank#} (help)  them to share their thoughts without any fear, making it more likely for them to come out of the box and explore their talents. When students {#blank#}9{#/blank#} (active) take part in social media, they may come to a global level. For instance, they can even learn about the different courses presented by universities from all around the world, which is beneficial for {#blank#}10{#/blank#} (they) to improve their knowledge of foreign cultures.

The traditional Chinese lunar calendar (阴历) divides the year into 24 solar terms (节气)．Major Snow (大雪) is the 21st solar term of the year. Here are three things you should know about Major Snow. 

We see many things like colors, lights, buildings with our eyes. But can you protect (保护) your eyes well? {#blank#}1{#/blank#}

Let eyes have a good rest.

Many people need to look at a computer when they work or study. That puts a lot of pressure (压力) on their eyes. So every 20 minutes, you should let your eyes have a good rest for around 20 seconds. {#blank#}2{#/blank#}

Wear a sun hat or sunglasses.

{#blank#}3{#/blank#} They can be bad for eyes, so it's best to get in the habit of protecting them from an early age. Wearing a sun hat or sunglasses is the best way to protect your eyes.

Have eye-friendly food.

You can also protect your eyes by eating some eye-friendly food.{#blank#}4{#/blank#}

Have a good sleep.

{#blank#}5{#/blank#} You may think you are doing nothing when you're sleeping. But it's the time for your body to rebuild and repair (重建和修复). At night, your eyes keep cleaning out the bad things that come in during the day.

根据材料内容，从下面五个选项中选出能填入文中空缺处的最佳选项，使文章意思通顺、内容完整。

A big rock fell through the house of Ruth Hamilton, when she was sleeping. 

Luckily, she was not hurt. "I jumped out of bed and turned on the lights. I didn' t know what else to do, so I called 911, " Hamilton, from Canada, told CBC. It turns out that the rock is a meteorite(陨石). It came from the outer space! Hamilton said she would keep the rock. 

 So what is a meteorite? You may have seen shooting stars at night. They are flying rocks in space. Earth's gravity(重力) catches them and lets them fall. Most of them burn up in the sky. But some fall down on Earth. They are called meteorites. Every year, more than 30, 000 meteorites larger than a strawberry fall down on Earth, according to science website DK Find Out. 

UK's Natural History Museum says that"the chances(概率) of a meteorite falling are the same everywhere on the Earth. " This means most meteorites end up in the seas. Few people can see them. But still, we have collected 50, 000 meteorites around the world so far. 

 Following are more information about the meteorite:

●A meteorite will become less than 5% of its size when it falls down on Earth. 

●Every 180 years, a meteorite hits a human being, according to a 1985 study by Nature. 

 You may ask: can we touch a meteorite? Does it have radiation(辐射)? Don't worry. The radiation is not strong. Nothing will happen to your body.