Many psychologists in the early twentieth century believed that humans use only 10 percent of their brains, and even the great Albert Einstein once wrote that most people use only a small portion of the grey matter between their ears. It's a theory that has often been put forward in television documentaries; magazines, advertisements and books over the past century.
But nearly all scientists now agree the 10 percent theory is completely unfounded. In fact, they question how this figure was ever arrived at in the first place and what areas of the brain are supposed to be unneeded. The theory supposes that if 90 percent of the brain were removed, a person would Still be able to function normally, while in reality it is known that damage to even a small area of the brain can result in extremely serious physical injury different activities and that many areas of the brain are used at the same time for some complex activities or thought processes.
Throughout the course of one day, most .areas of the brain are active at some time, even during sleep. The 10 percent theory suggests that certain areas o' the brain are not used, but scans slow activities throughout the entire brain and not in any separate part. The final argument against the 10 percent theory is the fact that doctors carefully map the brain before removing brain cancers so that they don't affect other essential areas.
From an evolutionary point of view, it's highly unlikely butt our comparatively larger brains would have evolved from our ancestors if the extra areas were not needed. In fact, there is absolutely no evidence support the 10 percent theory.
41.How did the 10 percent theory get such widespread popularity?
A. It was promoted in various types of copular media.
B. Albert Einstein argued strongly in support.
C. It was proven in scientific research.
D. Few people could prove it wrong.
42.The underlined word "unfounded" is chest in meaning to _________.
A. undiscovered B. unproven C. unknown D. unnecessary
43.Which of the following is true according to the writer?
A. We use less than 10% of our brains.
B. Most brain disorders affect the same part of the brain.
C. The brain is less active during times of sleep.
D. The 10 percent theory does not make evolutionary sense.
44.What can we infer from the passage?
A. People today use more of their brain than in the past.
B. Scientific opinion about the topic of brain use is equally divided.
C. Our understanding of the brain has changed greatly in the past decades.
D. Modern scientists have a complete picture of how the brain works.
45.What is the main purpose of the passage?
A. To present two sides of brain theory.
B. To criticize the 10 percent theory.
C. To explain how brain works.
D. To describe the history of brain research.
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From Paragraph 1 we can infer that ____.
A. Katie had been worried about the changes before starting her college life
B. Katie felt satisfied when her college life started
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D. Katie has fallen behind in her study after the first semester in college
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A. Adjust to it.
B. Share fears and worries with your parents.
C. Talk to your roommates about it.
D. Get along with your roommates.
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A. Not trying to change them.
B. Not making friends with them.
C. Developing the same interests as them
D. Not talking with them.
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B. Communication is important in college.
C. How you can adjust to your first year in college.
D. How schools help freshmen to get used to college life.
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73.Find in the passage a word closest in meaning to the underlined word “competence”.
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Living away from home tends to be the toughest adjustment for first-year students. You may feel homesick in your first weeks or months. It can help to call, write, or email your parents and friends making them know how you’re doing. You can also talk with your roommates. As first-year students themselves, they’re probably experiencing many of the same fears and worries that you’re dealing with.
But what if you don’t get along well with your roommates?
In some cases, it can be a good thing if you and your roommates aren’t much alike. Different views on things may be helpful, so respect your differences no matter what.
If you and your roommates don’t get along well, it can help to find someone who you feel does understand you, which should be easy on a campus with so many people. Many schools have student organization nights where all of the campus clubs gather and promote their organizations, so you can meet people with the same interests there as you. You’ll also meet tons of people in class or in your dorm building.
As homesickness, painful throats, sprained (扭傷的) ankles and wisdom teeth that act up are common among college students, you should check out your student guidebook or your school’s website to find out information about the university health center.
If you think you cannot deal with your problems, make a stop at the school counseling (咨詢) center. First-year troubles are something the counselors know well. You can get help there.
4. From Paragraph 1 we can infer that ____.
A. Katie had been worried about the changes before starting her college life
B. Katie felt satisfied when her college life started
C. Katie wasn’t used to the new environment in college at first
D. Katie has fallen behind in her study after the first semester in college
5. What’s the author’s suggestion on dealing with homesickness?
A. Adjust to it.
B. Share fears and worries with your parents.
C. Talk to your roommates about it.
D. Get along with your roommates.
6. Which of the following ways of dealing with roommates is RIGHT?
A. Not trying to change them.
B. Not making friends with them.
C. Developing the same interests as them
D. Not talking with them.
7. What’s the main idea of the text?
A. Freshmen may meet many problems.
B. Communication is important in college.
C. How you can adjust to your first year in college.
D. How schools help freshmen to get used to college life.
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