What will happen if you don't eat your breakfast? A short time age, A. test was given in the United States. People of different ages, from 12 to 83, were asked to have A. test. During the test, these people were given all kinds of breakfast and sometimes they got no breakfast at al. Scientists wanted to see how well their bodies worked when they had different kinds of breakfast.

    The results show that if a person eats a right breakfast, he or she will work better than if he or she has no, breakfast. If a student has fruit, eggs, bread and milk before going to school, he will learn more quickly and listen more carefully in class.

    The results also show that having no breakfast will not help you lose weight. This is because people become so hungry at noon that they eat too much for lunch. So they will gain (增加)weight instead of losing weight.

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    There has been a lot of talk about Chinese bicycle sharing recently. Shared bikes are nowadays becoming the centre of attention in our We Chat friend circle. Many of our friends post photos of themselves riding bikes, especially during the weekend in natural parks, and we can see people logging in and out of shared bike apps. But are people really drawn to(被....所吸引) the idea of exercise and green transportation all of a sudden?

    Some people have tried Mobikes lately, and they don't particularly like Mobikes. They think the first generation Mobikes, the ones without baskets, are designed for athletes. They are very hard to ride, and the seat is not adjustable(可调节的). Then, they tried the yellow ofo bikes. They are easier to ride than Mobikes, but they don't usually have baskets, and you need to enter the password by hand, instead of scanning a QR code and having the lock open automatically like with Mobikes.

    We appreciate that there are shared bikes on the roads. They have saved us a lot of time during emergency situations. And on beautiful, clear days, we do enjoy riding them outside the city. But from what we've seen in our friend circles, people have been giving them endless praises, while we still saw some obvious flaws (缺陷).

    In our experience, there has never been a unanimous(一致的) decision on anything in public opinion. It makes us wonder whether these people really like riding shared bikes or are just saying this to agree with others. When we asked them individually, a friend of us, Lisa, secretly told us she tried the bikes to fit in(融入朋友圈). She doesn't like bikes and finds city's roads too harsh for bike riding. But the only way to hang out with her friends was riding out of town together. To join in social activities, she had to pick up bike riding again. Another young man, Simon admitted that he started talking about and forwarding information(转发信息) on shared bikes to appear cool and fashionable to friends. He started paying attention when Mobikes firs launched(推出). These views will give us something new to think about when we ride these bikes again.

    Rainforests are magical(神奇的)places on earth, full of life and beauty. They are homes, to millions of birds, insects, animals, and plants. These forests are the world's natural treasure(财富).

    Most rainforests are near the equator(赤道). Some of the largest are in Brazil, South Asia and Central Africa. There are several kinds. Each has different levels of rainfall and different types of soil and temperature.

    In equatorial rainforests, the temperature stays between 25 and 35 degrees during the year. These rainforests get a lot of rain-as much as 4, 000 millimeters per year. Monsoon rainforests are very different. They have long dry periods. Also, their temperature can change a lot from season to season.

    Rainforests are important for many reasons. One is their great diversity(多样性)of life. There are millions of species of insects, animals, and plants. Scientists still don't know about most of them yet. Many rainforest plants could help us make new medicines. Rainforests also keep the soil strong. And they may be important to the earth's climate.

    Unfortunately, rainforests are getting smaller every year. Farmers burn down trees for land. Large companies cut down trees for their valuable wood. Other companies build mines near forests.

    Environmental groups are trying hard to save the rainforests. Hopefully they can, before they're all gone.

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