Read the following article and answer the question. Article: In some science fiction movies, evil robots refuse to die, no matter how hard people fight back. Now science fiction has become science fact. For the first time, scientists have made a robot that can take a beating and keep on going. Scientists from Cornell University made the robot, which looks like a spider with four legs. Until now, even the most advanced robot was almost certain to break down when it was damaged . That is because its computer inside simply doesn't know how to make the machine work after its shape has changed. To deal with this problem, the scientists put eight motors and two sensors that read how the machine is working. They all give signals to the machine's software. Using this information, the computer can then figure out the machine's shape at any moment. The new technology is a big advance in robot-making, scientists say, and it's far from scary. It may someday help scientists create better artificial arms and legs and give new freedom to people who lose _ . It might also help scientists understand how people and animals figure out their own sense of place in space. "It has been difficult to design robots that can work well when the environment changes or when it's damaged," says Olaf Sporns of Indiana University in US. "With this work, we are nearer to solving this problem." Question: Why do robots easily break down when they are damaged? Answer:
OPTIONS:
- They cannot repair themselves.
- The computer has changed a lot.
- They have no computers inside.
- The computer cannot work if the robot changes
The computer cannot work if the robot changes

Read the following article and answer the question. Article: long ago people made fires from lightning . But they had to keep the fire burning, for they couldn't start it again if there was no lightning. Later, they found out hitting two piece of stone together could make a spark . The spark could fire dry leaves. In this way they could make the fire again if it went out. Then people also learned to make a fire by rubbing. They made a hole on a big piece of wood and put a smaller stick into the hole. They turned the stick again and again. After a few minutes they got a fire. As years went by, people learned other ways to make a fire. Sometimes they used the heat from sun. they held a piece of glass in the right way and made a piece of paper on fire. About two centuries ago, people began to make matches . Matches brought people a quick and easy way to make fire. Today matches are still being used, but people have more new ways to make fires. One of them is to use an electric fire starter. Of course an electric fire starter is much more expensive than a box of matches. But it is more useful. Question: Matches have been used _ . Answer:
OPTIONS:
- for about two thousand years
- for about two hundred years
- since people began to use fire for cooking
- since people used the heat from the sun.

Answer: for about two hundred years

Question: Read the following article and answer the question. Article: Miss Wang is a young teacher of English in a middle school in Chongqing. She loves teaching very much. One day when she was giving an English lesson, she found Mr. Li, the headmaster, sitting at the back of the classroom. After class, Mr. Li told her that he came to her class to find out how much English and Chinese she was using in class. The result was about half English and half Chinese. She was using Chinese when she gave instructions and explained some grammar rules to her students. Mr. Li suggested that she should use English as much as she could in class. So Miss Wang made the following plans: Join an English club and practice speaking English. Learn more English teaching expressions by heart. Have a five-minute talk with students in English before class. She used body language to make herself understood if students could not follow. One year later, she found she could speak English _ in class. ,. Question: Mr. Li came to Miss Wang's class to _ . Answer:
OPTIONS:
- practice speaking English
- make Miss Wang understood
- give instructions to the students
- find out how much English and Chinese Miss Wang was using in class
Answer: find out how much English and Chinese Miss Wang was using in class

input with options: Read the following article and answer the question. Article: Subject: party Hi! Jenny, My sister Ann and I are going to have a party this Friday at my home. Some friends will be there. Most of them are from the office. My best friend, Tom, will come, too. I want you to meet him. Do you want to come? We'll play games and talk. Then we'll have dinner. Everyone will bring food or drinks. It begins at 4:00 pm. and ends at 8 or 9 pm. We'll have a great time! Can you come?I hope so! Let me know soon. Call me or send me an e-mail. Question: The party begins at _ ? Answer:
OPTIONS:
- 4:00 am
- 6:00 pm
- 4: 00 pm
- 6:00 am
output: 4: 00 pm

Read the following article and answer the question. Article: One afternoon, my son came home from school and asked me, "Are all people the same even if their skin color is different?" I thought for a moment, then I said, "I'll explain. Let's go to a fruit store first. I have something interesting to show you." At the store, I told him that we needed to buy apples. And we bought some red apples, green apples and yellow apples. After we got home, I told Adam, "It's time to answer your question." I put one of each type of apple on the table: first a red apple, followed by a green apple and then a yellow apple. Then I looked at Adam, who was sitting on the other side of the table. "Adam, people are just like apples. They come in different colors, shapes and sizes. See, some may not even look as delicious as others." As I was talking, Adam was examining each one carefully. Then, I took each of the apples and peeled them, placing them back on the table, but in a different place. "OK, Adam, tell me which one is the red apple, the green apple and the yellow apple." He said, "I can't tell. They all look the same now." "Take a bite of each one. See if that helps you tell which one is which." He took big bites, and then a huge smile came across his face. "People are just like apples! They are all different, but if you take off the outside, they're pretty much the same on the inside." "Right," I agreed. "Just like everyone has their own features but they are nearly the same." He completely got it. I didn't need to say or do anything else. Now, when I eat an apple, it tastes a little sweeter than before. What perfect fruit it is! Question: In the end, Adam understood that _ . Answer:
OPTIONS:
- people are much the same even if their skin color is different
- people are different if their skin color is different
- the apples look the same after they are peeled
- apples of different colors taste different
people are much the same even if their skin color is different