What's a good friend like? One may have different answers to this question at different ages. When he is very young, he may think a good friend must be together with him all day. And they can share everything together. If his friend doesn't give him food to eat once, he doesn't think they are good friends any more. But they will play together happily again very soon. When he grows older and studies in a middle school, his idea about a good friend changes. He thinks a good friend should be helpful and honest. A good friend should always help him with his lessons. A good friend should come to him when he is sad. And he is always ready to tell everything to his friend. If his friend tells others about his secrets, he may hate the friend. When he grows up, he may not think it's necessary for a good friend to be always honest. Everyone has his secrets. If the truth may hurt the friend, it's better to keep it secret from him than tell him about it. And he may think a good friend can give him some good advice when he has problems. He comes to understand that he shouldn't just ask friends for help and that he should also learn to do something for his friends. What does a person want to get from his friends when he is in trouble? A) Money. B) Advice. C) Food. D) Humour.
B
Many companies use guards and expensive alarm systems to protect their property . Soon a new kind of protection will be used--robots. Engineers have been working on the first mobile robots for businesses. The robots will guard factories, warehouses and museums at night. The mobile robots will move around slowly on wheels. They will be able to detect(,) people through walls and pick up sounds, such as breaking glass. They can be fixed with loud sirens to frighten thieves, or radios to signal police or guards. To protect a building, a robot will have to move around without knocking into the walls. Information about the building will have to be stored in the robot's small, built-in computer. A floor map could be programmed into the computer's memory, for example. A mobile robot will not be able to do everything. Unlike human guards, it will not be able to climb stairs, open doors, or move along rough ground. It won't be able to tell the difference between friends and enemies. Because of that, people will have to be prevented from entering the area it moves. One kind of mobile robot will be able to "sense" whether a chair or a box has been moved and go around it. This robot will also judge size well enough so that it won't send an alarm if a cat crosses the room. And if someone tries to steal this robot, it will sound a loud, painful siren. The three-foot-tall robot is hard to be stolen anyway. It weighs about 200 pounds. U.S. companies pay almost $10 billion a year to protect their property with alarm systems and human guards. Mobile robots may be cheaper. How will a robot get directions for moving around a building? A) From a human guard. B) From a built-in computer. C) From another robot. D) From radio signals.
B
Q: If I ask you to shut your eyes and gave you a piece of apple to eat, would you be able to tell me what it is just by tasting it? Of course, you could. Your tongue is covered with tiny "taste buds" which help you know what different foods taste like. Do you know that foods would taste different if you did not have a nose? This experiment shows how important your nose is when you taste things. What You Need: * a friend to help * small pieces of any food like carrot, orange, banana * small pieces of apple, raw potato, and onion What You Do: There are actually three different experiments. You and your friend should take turns to try them on each other. Experiment 1: Have your friend close her eyes and open her mouth. Give her a piece of the food and ask her to taste it. Then, ask her what she thinks it is. She will probably guess correctly. Experiment 2: While your friend has her eyes closed, give her a piece of the raw potato. At the same time, hold a piece of apple right under her nose. Ask her to eat the potato (but don't call it by name) and tell you what she thinks it is. She will say it is a piece of apple! Experiment 3: (for the brave) Take a piece of raw onion. You don't have to close your eyes this time. Squeeze your nose closed with your other hand so that no smells can get into your nose. Now take a nibble of the onion. Surprise! As long as you hold your nose, you will not be able to taste the onion. The Science Secret You already know the science secret. Your nose and your tongue work together to make food taste the way it does. Your tongue, however, can taste only certain flavors like salty, bitter, sour, and sweet. All of the other "tastes" are actually "smells," and you need your nose to "taste" them. Oh, and you might use this science secret the next time you are told to eat something you don't like the taste of. If you hold your nose while you eat it, you won't "taste" it at all. According to this article, what could a reader know about food? A) People hold their noses to eat onions. B) If you can smell potatoes, you will taste apples. C) People need a sense of smell to taste some food. D) If you close your eyes, food will taste better.
A: C
(Question)
People all over the world write to Big Ben. They even send birthday presents. Big Ben is not a person. It's a clock. Big Ben is the great clock hanging up in a tower of the parliament building. The people of London like to see Big Ben's four friendly faces. They like to hear the bell striking on the hour. Bong! Bong! Bong! Big Ben's story started in 1834. In that year the old parliament building was burned down. Its clock tower fell to the ground. There had to be a new building and a new clock. Plans were made. They called for a "King of Clock, the biggest and the best in the world". So the clock had to be big. And it had to keep very good time. In two years the big clock was made. Five more years went by before the clock tower was last finished. Then the four bells for the chimes were brought into the tower. And at last the big hour bell was put in place. It rang out for the first time on July 11, 1859. This great bell had to have a name. A meeting of parliament was called to pick one. "This clock is the king of clocks," one man said. "Let's call the bell the Queen of Bells." "Then why not Victoria?" said another (Victoria was the British queen at that time). The talk about names went on and on. Then Benjamin Hall got up to speak. He was a big man. By this time they were all tired. Someone shouted, "Why not call it Big Ben and be done with it?" Everybody laughed, and the meeting was over. But it was called Big Ben from then on. Not just the bell but the whole clock. Which is the best title for this passage? A) Why Big Ben Is So Big B) British Parliament Building C) How Big Ben Got Its Name D) British Queen Victoria
(Answer)
C