A famous designer(设计师) and a university student produce a new cup called Vessyl. They have spent several years1it. The smart cup can not only tell Coca Cola from Pepsi Cola,2also tell people whether they should drink water or not.

    When people3liquid(液体) into this smart cup, a few seconds(秒) later, it can check this kind of liquid and tell them what it is. Then it gives4information of the drink, such as sugar, fat and calorie. When people put the cup in their5, it can also show them the condition of their bodies. If they are6, I can tell them to drink water.

    "My partner and I want people to7healthy. In modern society, people are usually8busy to do exercise, or even drink enough water every day. They have much9. We produce this smart cup so that people can make a choice10," the designer said.

    Many people know that rubbish is a big problem on planet Earth. What many people don't know is that junk (垃圾) has become a problem in outer space too.

    According to BBC News, there are more than 22, 000 pieces of space junk floating around the earth. And these are just the things that we can see from the surface of the earth by telescopes (望远镜). There are also millions of smaller pieces of junk that we can't see.

    Objects, like bits of old space rockets or satellites, move around the planet at very high speeds, so fast that even a very small piece can break important satellites or become dangerous to astronauts. If the tiniest piece of junk crashed into a spaceship, it could damage the vehicle.

    To make things worse, when two objects in space crash, they break into many smaller pieces. For example, when a U. S. satellite hit an old Russian rocket in 2009, it broke into more than 2,000 pieces, increasing the amount of space junk.

    To reduce additional space junk, countries have agreed that all new space tools can only stay in space for 25 years at most. Each tool must be built to fall safely into the earth's atmosphere after that time. In the upper parts of the atmosphere, it will burn up.

    Many scientists are also suggesting different ways to clean up space junk. In England scientists are testing a metal net that can be fired into space junk. The net catches the junk and then pulls it into the earth's atmosphere to burn up. The Germans are building robots that can collect pieces of space junk and bring them back to Earth to be safely destroyed.

    "The problem is becoming more challenging because we're sending more objects into space to help people use their mobile phones and computers," says Marco Castronuovo, an Italian space researcher.

    "The time to act is now. The longer we leave the problem, the bigger it will become," he says.

Think about the colors of fruit and vegetables: the red of tomatoes, the orange of carrots, and the purple of grapes.

You can eat fruit and vegetables of all colors—green, yellow, blue, purple and white. Each color is important to our health. These colors work together for our bodies.

Red gives us a healthy heart. Red helps improve our memory (记忆力). Yellow is good for our eyes. White can reduce (降低) cholesterol. Green is good for our eyes, too. It also gives us strong bones and teeth. Blue helps us keep a good memory as we grow old. It also helps our heart. So when you are buying or eating fruit and vegetables, remember to try fruit and vegetables of different colors.

Children all around the world love Lego bricks(乐高积木). With those bricks, they can make anything they want. Lego bricks are a great toy(玩具) to play with. Now, for the first time, Lego makes Braille Bricks in English and French, making them a useful toy for blind(失明的) children. 

Lego Braille Bricks have dots (小圆点) on them. The dots are Braille. By feeling (感受) them, blind children can read words and numbers. They can also learn Braille when playing with the bricks. It makes learning easy and fun. 

Olivia is a blind girl, and she learns Braille when playing with the Lego bricks at her school. She loves to play with them and learn Braille at the same time. Her mother also plays with her at home and now she also knows Braille. 

Reece, a little boy, uses the Lego bricks to teach his family Braille. Now, his mother and sister know Braille as well. He says, "I feel so good. Because my loved ones learn something new and I am their teacher. So cool!"

Lego makes its colourful bricks useful. Let's thank it for bringing a new way of playing and learning!