Read the following article and select the best answer. Article: New research shows how kids' brains reorganize as they learn math. All the time you spent memorizing multiplication tables may have made you a better mathematician, according to a new study. A team of scientists from Stanford University, in California, have shown how the brain reorganizes itself as kids learn math. After a certain amount of time spent practicing math, kids can put away the calculator . They don't even need to count on their fingers. They simply know the answers to subtraction , addition, and multiplication facts. The quicker kids can recall basic math facts, the easier it is for them to solve more complicated math problems. The Stanford University researchers observed the brain activity of 28 students aged 7to 9 for the study. They took scans of the students' brains as the students solved math calculations without the help of a calculator, pen or paper. A calculation--three plus four equals seven, for example--flashed on a screen. The students pushed a button to say if the answer was right or wrong. The scientists also recorded the response speed, and what parts of the brain became active as the kids pushed the button. These observations showed a process called fact retrieval . Rather than using their fingers to count, or writing out answers on a piece of paper, the students pulled the answers from memory. It's as if the answers to basic math problems are kept in a long-term storage area in the brain, which was built from repetition. "Experience really does matter," said Dr. Kathy Mann Koepeke. Children make the shift from counting to fact retrieval when they are 8 to 9 years old, the study shows. This is the time when most students are learning basic addition and subtraction. When kids have basic math facts memorized, the brain has more free space to learn more complicated math. This process has benefits for the future. The study shows as kids grow older, their answers rely more on memory and become quicker and more accurate. Less brain activity is devoted to counting. Some children make... Question: What plays a key role in solving a math problem? - Intelligence - Experience - Learning method - Constant practice
Experience

Read the following article and select the best answer. Article: Dave needed to prepare for Saturday's fishing trip. He went into his hall closet, where he had more than 20 rods and reels. Nowadays he went fishing twice a year at Big Bear, a huge lake in southern prefix = st1 /Californiaabout 7,000 feet up in the mountains. California tries to improve the fishing industry by sponsoring a Free Fishing Day twice a ear, once in June and once in September. That's enough for Dave. He went mostly because it was a social event with a few friends, not so much to catch fish. Even driving up a twisty two-lane road was worth the trip. Let alone the big, beautiful houses and trees that lined the shore of the lake. Preparing was a project in itself. Dace had even created a computer file named Fishing Trip. It was a checklist of 45 things to take to Big Bear. He took two rods, because on Free Fishing Day you were allowed to fish with two rods instead of the usual one rod. He took a sweatshirt, jeans, two pairs of socks, a heavy hooded jacket, winter gloves, and a scarf. He also took flip-flops, shorts, a T-shirt, sunglasses, a big hat, and lightweight raincoat. If you go to Big Bear in June, you'd better be prepared for hot or cold, rain or shine. He prepared a couple of magazines to read just in case the fish weren't biting. He and his friends joked that the fish were always biting- in the spot you just left or the spot you were headed for. After about an hour and a half; Dave had gathered all the items on his list into a neat pile next to his door. He went to bed knowing that tomorrow's weather and fishing were unpredictable, but the good time with his friends was a given. Question: On Free Fishing Day, people going fishing could use_. - one fishing rod - two fishing rods - three fishing rods - twenty fishing rods
two fishing rods

Read the following article and select the best answer. Article: Why I Don't Spare "Spare Change" "Poor but honest." "The deserving poor. " These words always come to my mind when I think of "the poor. " But I also think of people who, perhaps through alcohol or drugs, have ruined not only their own lives but also the lives of others in order to give way to their own pleasure. Perhaps alcoholism and drug addiction really are "diseases. " as many people say, but my own feeling-based, of course, not on any serious study-is that most alcoholies and drug addicts belong to the "undeserving poor. " And that is largely why I don't give spare change to beggars. But surely among the street people there are also some who can rightly be called "deserving." Deserving what? My spare change? Or simply the government's assistance? It happens that I have been brought up to believe that it is proper to make contributions to charity , but if I give some change to a beggar, am I making a contribution to charity and thereby helping someone, or, am I perhaps simply encouraging someone not to get help? Or, maybe even worse, am I supporting a cheat? If one believes in the value of private charity, one can either give to needy people or to charitable organizations. In giving to a beggar one may indeed be helping a person who badly needs help, but one cannot be certain that one is giving to a needy person. In giving to an organization, on the other hand, one can feel that one's money is likely to beused wisely. True, facing a beggar one may feel thatthis particular unfortunateperson needs help atthis moment-a cup of coffee or a sandwich-and the need will not be met unless I put my hand in my pocket right now. But I have come to think that the beggars whom I meet can get along without my spare change, and indeed perhaps they are actually better off for not having money to buy alcohol or drugs. I know nothing about these beggars, but it's my impression that they simply prefer begging to working. I am not generalizing about street people. I am talking about the people whom I actually meet. That's why... Question: Which of the following opinions does the author accept? - Drug addiction is a disease. - Some street people are poor and needy. - Most beggars have received enough help. - Charitable organizations handle money properly.
