Question: Read the article and select the best answer. Article: In our daily life now, you may often find some people like to do several things together at the same time. They may watch TV while playing cell phones, and they may work while chatting with their close friends. As a new research suggests, people who multitask all the time may be the worst at doing two things at once. The findings, based on performances and self-evaluations by about 300 college students, indicate that many people multitask not out of a desire to increase productivity, but because they are easily distracted and can't focus on one activity. And "those people turn out to be the worst at handling different things," said David Sandy, a psychologist at the University of Utah. Sandy and his colleagues gave the students a set of tests and asked them to report how often they multitasked, how good they thought they were at it, and how sensation-seeking or impulsive they were. They then evaluated the participants' multitasking ability with a tricky mental task that required the students to do simple mathematical calculations while remembering a set of letters. Not surprisingly, the scientists said, most people thought they were better than average at multitasking, and those who thought they were better at it were more likely to report using a cell phone while driving or viewing multiple kinds of media at once. But those who frequently deal with many things at the same time were found to perform the worst at the actual multitasking test. They also were more likely to admit to sensation-seeking and impulsive behavior, which connects with how easily people get bored and distracted. "People multitask not because it's going to lead to greater productivity, but because they're distractible, and they get sucked into things that are not as important," Sandy said. Adam, a researcher at the University of California, who was not a member of the research group, said one limitation of the study was that it couldn't find out whether people who start out less focused tend toward multitasking or whether people's... Question: The research led by Sandy indicates that people who multitask _ . Options: A: prefer handling different things when getting bored B: have the poorest results in doing various things at the same time C: seek high productivity constantly D: are more focused when doing many things at a time
Answer: B

Question: Read the article and select the best answer. Article: We are surrounded by mixed messages about mistakes: we're told we earn by making them, but we work hard to avoid them. So the result is that most of us know that we are going to make mistakes, but deep down, we feel we shouldn't. Experiments with schoolchildren who did well on a given test show that those who were praised for being smart and then offered a more challenging or less challenging task afterward usually chose the easier one. On the other hand, children praised for trying hard-rather than being smart-far more often selected the more difficult task. If we try hard to avoid mistakes, we aren't open to getting the information we need in order to do better. In a writing study, experiments showed that those who are so scared to make mistakes perform worse in writing tasks than those who aren't as worried about being perfect. They fear receiving any kind of negative feedback, so they don't learn where they went wrong and how to get better. We don't just learn more when we're open to mistakes, we learn deeper. Research tells us that if we're only concerned about getting the right answer, we don't always learn the underlying concepts that help us truly understand whatever we're trying to figure out. Mistakes need to be seen not as a failure to learn, but as a guide to what still needs to be learned. As Thomas Edison said, "I am not discouraged, because every abandoned wrong attempt is another step forward. " Furthermore, we often make mistakes because we try new things-we wander away from accepted paths. Teflon, penicillin-these are examples of great discoveries made by mistake. Take a page from Albert Einstein, who said, "Anyone who has never made a mistake has never tried anything new. " Question: What's the main idea of the passage? Options: A: We can never avoid making mistakes when we work. B: Success can't be achieved without making mistakes. C: Mistakes should be treated with a correct attitude. D: Try every means to avoid mistakes in our daily life.
Answer: C

Question: Read the article and select the best answer. Article: Some people can stay up all night and still get work done the next day. I'm not one of them. After a night without enough sleep, I feel bad-tempered. I have trouble remembering things. And all I want to do is go to bed. How do you feel after you've stayed up late to finish schoolwork or the day after an overnight party? Scientists now say that your answers to these questions may depend on your genes. New research suggests that a gene called "period 3" influences how well you function without sleep. The "period 3" gene comes in two forms: short and long. Everyone has two copies of the gene. So, you may have two longs, two shorts, or one of each. Your particular combination depends on what your parents passed on to you. Scientists from the University of Surrey in England studied 24 people who had either two short or two long copies of "period 3". Study participants had to stay awake for 40 hours straight. Then, they took tests that measured how quickly they pushed a button when numbers flashed on a screen and how well they could remember lists of numbers. Results showed that the people with the short form of "period 3" performed much better on these tests than the people with the long form did. In both groups, people performed worst in the early morning. After the first round of experiments, participants were finally allowed to sleep. People in the group that performed well on the tests (those with the short form of "period 3") took about 18 minutes to nod off. While people with the long "period 3" gene fell asleep in just 8 minutes. They also spent more time on deep sleep. That suggests that people with the long form of the gene need more and deeper sleep to keep their brains working in top form. I think I must have the long form of "period 3". What about you? Question: The purpose of this passage might be _ Options: A: to tell the result of a research on sleepy gene. B: to tell us the importance of plenty of sleep. C: to inform the harm of lacking sleep. D: to announce the sleeping rules of humans.
Answer:
A