Article: We often hear people say, "I have a good memory for things like that" or "I can remember names". But do you know memory is the single most important thing and it has played a very important part? For early men, there were dangerous all around them--bad weather, wild animals. The key to keep on living lay in man's ability to remember these dangers and the ways he had dealt with them in the past. In order for memories to be stored, the human brain became more complex. And as man learned how to deal with them, he became civilized . Surprisingly, scientists today understand little about memory and how it works. They have not yet found a way to open up the brain and observe its function without destroying it. Perhaps there are two types of memory: short-term and long-term. Short-term refers to those facts that stay with us for a few seconds to a few hours. For instance, when you stay at a hotel, you remember the room number and forget as soon as you leave. Long-term memory, on the other hand, means you remember things for a long period of time. If you spend your honeymoon in a particular hotel, it's likely that you'll remember your stay quite clearly. Scientists also believe that a short-term memory can become a long-term memory through consolidation . A lot of chemical and physical changes take place in the part of the brain. Although the human brain weighs three pounds, it contains 30 billion nerve cells acting like a computer. When those changes strengthen the links in certain nerve cells, a thought becomes part of the long-term memory. Question: Scientists' knowledge about the function of brain is _ Yes or no, is the answer "not enough"?
No

Article: Why should you tour Spain with SpainExchange? *We design and personalize your tour to fit your desires and needs. *We are Spain insiders: we are located in Spain and we know the country. You get the tour you want. You do not have to follow a schedule, but we encourage you to make your own with our help. If you have a few cities in Spain that you want to visit or a specific theme for your tour that needs some fine-tuning , we can do it for you. On the contrary, if you are not sure what's here and need some extra help, we can help you. We can assist you in developing the tour that fits you and your students. You get more for your money. Yes, it may cost you the same price as with the other companies--usually less--but you will receive more in return. With any other company you will be mixed with other groups. With SpainExchange, your tour is for yourself and your students only: your group alone will be in your bus; your students will be housed in double rooms; they will have 2 paid meals per day, and your entrance fees will be on us. Your students will have an educational experience they'll never forget. The students will learn about world history, not just Spanish history, art history, archeology, Spanish culture, and much more. Many students have "fallen in love" with Spain and make plans for future studies here. And teachers are amazed at how much Spain has to offer. As one teacher said, "I can't wait to come back and see the rest." Only a professional Spain insider that is flexible to design the tour that fits your group can provide all that for you. Just tell us what you want and enjoy the ride. Question: Who do you suppose this passage is written to? Yes or no, is the answer "School teachers."?
No

Q: Article: Coffee is one of the world's most widely-enjoyed drinks. Now, a new research suggests that if you drink enough coffee, it might help you avoid certain kinds of cancer. Dr. Mia Hashibe of the University of Utah School of Medicine was interested in the connection between coffee drinking and certain cancers of the head and neck. Researchers have looked into this before, but without reaching any firm conclusions. She said, "So this finding from our new study was quite a surprise. We didn't really have any expectation of which direction it could go into." To sort out the confusion, Hashibe and her assistants used statistical ( ) techniques to, in effect, make one big study out of the earlier smaller studies. She explained, "Thanks to the earlier studies, we have a lot more power than earlier studies that looked at this. And we included 4,000 cancer patients who have cancer of the mouth and throat. And then 9,000 controls, people who do not have cancer. ' Those studies--in Europe and the United States--found that people who drank a lot of coffee were less likely to develop cancers of the mouth and throat. "We saw a protective effect for drinking more than 4 cups of coffee per day," Hashibe said. "This was the 40 percent decrease in risk. We did not see the same effect for drinking three cups or less per day." Mia Hashibe said there was a weak connection between cancer risk and drinking coffee without caffeine. And she and her assistants found no proof that drinking tea provided the same protection as drinking Coffee. Their research is published in the journal Cancer Epidemiology, Biomarkers & Prevention. Hashibe says it is not clear how coffee might protect drinkers from certain cancers. "There are a few chemicals that are known to be antioxidants in coffee. So we are thinking perhaps they are playing some sort of protective role against several cancers." Question: Dr. Hashibe expected nothing of her research because _ Yes or no, is the answer "no conclusions had been reached before"?
A: No

(Q).
Article: The following are letters to the editor of a school newspaper. Dear editor, I'd like to express my opinion about grades. Students should be allowed to study without worrying about grades. Fortunately, most educators are becoming aware of the fact that students have different interests and abilities. I understand that grades are useful, but grades often limit creativity. Competing for better grades causes many students to turn down opportunities to pursue music, dramatics and sports. Grades force an arbitrary standard of success on everyone. I do not demand as some extremists do, that grades be removed immediately. However, I do believe that less emphasis should be placed on grades. I hope that someday grades will become optional at Village High School. Magdalena Smith Drama Club Dear editor, I'd like to say something about grades. Let's face the facts about grades. Grades perform three basic functions. First, grades motivate students to work at their highest level of competence . Second, they act as a reward for hardworking students and as a punishment to students who do not work hard. Finally, grades are used as an effective standard by which to measure students' achievement. Good grades help students to get jobs and to get into university. I've spoken with a number of students who have jobs, and most of them say that they were hired primarily on the basis of their grades. My grades helped me land a part-time job and will help me get into university next year. I think grades are extremely important at Village High School. Simon Harper Science Club Question: From the second letter, we can infer that Simon Harper is a/an _ . Yes or no, is the answer "student"?
(A).
Yes