Traveling（旅行) is one of the most important activities and people were interested in it many years ago. Modern traffic develops(发展) fast, so traveling to different places has become much faster than before.Staying healthy while traveling can make your trip happier. But do you know how to keep healthyduring a trip? The following advice may be useful to you.

    Before leaving

①Wear comfortable shoes, a hat and sunglasses.

②Take some medicine that you need with you. They can be used when you get ill or have other problems.

③Do some exercise for weeks or months before you leave if you plan to do lots of walking or climbing during your trip.

④Prepare（准备） proper (适当的)food. Take bread, biscuits and some fruit for a long time. They don't go bad quickly. Bring meat, fish, eggs, milk and even salads and vegetables for a nearer one.

While traveling

①Be sure not to eat dirty food or bad fruit.

②Have enough time to take a rest during your trip.Itcan help you become more relaxed.

③Tap（水龙头）water is not safe, so drink bottled water and always clean the cover of the bottle.

④Keep food in good condition（状态）. Remember: If you travel with food, keep hot food hot and cold food cold.

    Light and shadow（影子）are friends. They usually go together. We receive light every day. At the same time, we produce shadow.

    Light cannot shine through you. Your body stops it from passing. There is a dark spot on the ground next to you. The light cannot reach the dark spot. This is your shadow.

    At noon the Sun shines over your head. Your body stops very little light from reaching the ground.

    We love light, especially sunlight. Without sunlight, life on the Earth is impossible. Most of us like to stand in the shadow of a tree in summer. But some people are afraid of their own shadow at night. They do not want to walk in a dark street. They do not want to see the shadow either. But still light and shadow usually go together.

    When throwing away rubbish, do you know which Bin it should go in? Have you ever noticed the differently-colored Bins on the street?

    Some of you might not be able to answer this question. However, it's actually quite important to know how to sort your waste. Not knowing how to sort waste can make it harder to save energy and protect the environment.

    If you don't sort your waste, all of it will go to a landfill and Be Buried(埋) together. These landfills can take up large areas of ground that could have Been used for planting trees or Crops. The electronic waste you throw away, such as Batteries, Can pollute the soil and groundwater. Other pieces of waste, like the metal part of a pen, can be used to make other things if they are properly recycled.

    With this in mind, many Cities in China have Been running waste-sorting Campaigns (活动)in recent years. For example, Shanghai announced in July that within three years, all of its residents(居民)should sort their waste into four groups wet, recyclable, harmful and dry.

   "Wet" waste is also known as household waste." They are things you don't want but that pigs can eat," Guangzhou Daily explained. Paper, metal, glass and other things that Can Be reused are recyclable waste.

    Harmful waste includes things like medicine, Batteries and fluorescent Bulbs. Finally, any waste that's not wet, recyclable or harmful will go in the" dry waste" bin.

    Many other Chinese Cities, including Shenzhen, plan to use this method to sort their garbage. Now that you know this, perhaps you can do your part to protect the environment and encourage others to sort their waste.

    There are many animals in danger, such as pandas, elephants, and South China tigers.

    The South China tiger is the smallest tiger in Asia. It is also one of the rarest tigers in the world. Scientists think that there might be a few South China tigers living in the wild, but they are still not sure about it.

    The South China tiger is special in its face, but it shares the height with the common tigers. In the past, the South China tigers lived in the forests. But today more than half of them are living in zoos. If there are not safe places for them, they will die out soon. Baby South China tigers need their mothers' milk in the first two months. The mother teaches her babies how to hunt.

    Scientists think that people should do something to protect the rare animals. If people take action together, these animals will have a better place to live in. We'll also live in a better world.