Read the following article and select the best answer. Article: Scientists have devised a way to determine roughly where a person has lived using a strand of hair, a technique that could help track the movements of criminal suspects or unidentified murder victims. The method relies on measuring how chemical variations in drinking water show up in people's hair. "You're what you eat and drink, and that's recorded in your hair," said Thure Cerling, a geologist at the University of Utah. While U.S diet is relatively identical, water supplies vary. The differences result from weather patterns. The chemical composition of rainfall changes slightly as rain clouds move. Most hydrogen and oxygen atoms in water are stable, but traces of both elements are also present as heavier isotopes . The heaviest rain falls first. As a result, storms that form over the Pacific deliver heavier water to California than to Utah. Similar patterns exist throughout the U.S. By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline. Each inch of hair corresponds to about two months. Cerling's team collected tap water samples from 600 cities and constructed a map of the regional differences. They checked the accuracy of the map by testing 200 hair samples collected from 65 barber shops. They were able to accurately place the hair samples in broad regions roughly corresponding to the movement of rain systems. "It's not good for pinpointing ," Cerling said. "It's good for eliminating many possibilities." Todd Park, a local detective, said the method has helped him learn more about an unidentified woman whose skeleton was found near Great Salt Lake. The woman was 5 feet tall. Police recovered 26 bones, a T-shirt and several strands of hair. When Park heard about the research, he gave the hair samples to the researchers. Chemical testing showed that over the two years before her death, she moved about every two months. She stayed in the Northwest, although the test could not be more specific than somewhere between eastern... Question: What did Cerling's team produce in their research? - A map showing the regional differences of tap water. - A collection of hair samples from various barber shops. - A method to measure the amount of water in human hair. - A chart illustrating the movement of the rain system.
A map showing the regional differences of tap water.

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Read the following article and select the best answer. Article: So you have been called for an interview---well done?Your effort has been paid off? You will feeI better at the interview if you show an understanding of the nature of the organization. Ask someone who already does it,or check it with one of the advisers. Ask a member of your family or a friend to act as the employer and to give you an unreal interview.Be as realistic as possible,answer the questions seriously.Afterwards discuss how it went.Think about how the employer would prefer to see your look.Remember---the majority of employers are over 30. It is not wise to rush out and buy new clothes.which will be worn for the first time at the interview.You'll feel more at ease in a familiar dress. Carelessness in any of these could cost you the job.Arrive at least 15 minutes before time,this will give you a chance to have a look around,read the notice board and get the feel of the place.Being late at the interview produces a bad impression.The first impression that the interviewer gets of you is formed as you walk through the door,so take a couple of deep breaths. Be ready to shake hands if the interviewer offers. Don't take a seat until asked.Then sit comfortably. Make eye contact when you are greeted and again if you shake hands.And during questioning,eye contact is a form of non-verbal greeting. Remember the interviewer's name and use it from time to time. Be ready for the question "Is there anything you want to ask?" Before the interview you should get ready for two or three such questions.Look on these not just as a chance to get information but as a means to give your employer a better impression.Asking can show knowledge but avoid asking about holidays,pensions and so on.It looks as if you are tired even before you begin.You can check on these later,when the hope for job is offered. And if you fail, look upon the interview as an experience in itself.Learn from it.We wish you good luck and good job hunting. Question: What does the phrase"eye contact"means? - A kind of greeting without words. - Shaking hands with the interviewer. - Looking at each other for a long time. - A way of getting a desirable job.
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A kind of greeting without words.

Question: Read the following article and select the best answer. Article: A man called Greedy Black loved nothing but old things. He was so crazy about everything that was old and out of fashion because he was convinced that the older, the better. Always worried about losing his treasures, he kept all he had collected in an old room. It had no windows, so it was very dark, and of course, it was full of old things. One day Greedy Black went into this room to get a ladder, as he had often practiced, but slipped on something and fell against a big garden fork. The fork hit him on the head and knocked him down. Then it fell on top of him and hit him hard on the left leg. The ends of the fork then went into his long beard. He fought with the fork fiercely, and at last threw it off him, jumped up and ran out of the room. He was very angry. He had an old sword under his bed, and he now ran and got this. Then he ran back to the room, opened the door suddenly and shouted in a terrible voice, "All right, come out and fight, you and all the other forks in the world! I'm not afraid of you!" But there was no response for his challenge. So in great _ , he turned on the electric light, only to find that there was no other fork but the one that had repeatedly troubled him. After reading this story, what reflections have you got for yourself? Do you still think that keeping old things in a private place sounds sound? Or don't you believe that you have to be far away from forks because forks are the most powerful? Or what else.....? Question: Why did the man keep old things in his room? - He could hardly put them in any other places. - He laid great values on old things. - He was afraid someone would steal them. - He wanted to let them have life.
Answer:
He laid great values on old things.