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Leonardo da Vinci was the first man to suggest that growing trees add a new ring in their trunks each year. The 11 in these rings relates to the physical conditions which the tree experiences. Thus, trees grown in a 12 area and time each develop a pattern or configuration of their rings.
This 13 was of little significance until Andrew E. Douglas began to study tree rings in Arizona in 1900. Using a technique called cross dating, he was able to employ tree rings to the study of archaeological sites and date the ruins with 14 . Some were as old as 6700 B. C. ! This study of tree rings is called dendrochronology.
In time the cross dating was 15 by a carbon 14 process. This approach measured the amount of carbon 14 radiating from a piece of wood and 16 to determine the age of that wood. Further use of the carbon 14 technique has shown that the radiation process is more complex and less 17 than had been at first thought.
The most 18 aspect of tree ring research is now called
dendroclimatology. This 19 of the reconstruction of climates and climatic cycles and events from the evidence found in the tree rings. From this it is hoped that a 20 of drought cycles can be determined in the American Southwest. Such information will be of great help in determining the life and ecology of that region of the United States.
Just back from a tour of several Arabian Gulf1countries, a woman recalls how jumpy she felt talkingto men there. "Not because of what they said," sheexplains, "but what they did with their eyes." Insteadof the occasional blink, Arabs lowered their lids soslowly and languorously that she was convincedthey were falling asleep. In Japan eye contact is a keyto the way you feel about someone. And the less of it, the better. What a Westerner considersan honest look in the eye , the Oriental takes as a lack of respect and a personal affront. Evenwhen shaking hands or bowing — and especially when conversing6 — only an occasional glanceinto the other person's face is considered polite. The rest of the time , great attention shouldbe paid to fingertips, desktops,and the warp and woof of the carpet. "Always keep your shoesshined in Tokyo," advises an electronics representative who has spent several days there. "You can bet a lot of Japanese you meet will have their eyeson them."
Ⅰ. Do you understand the meaning of the following sentences relating to eye and could youexplain them in your own words ?
1. His eye s are bigger than his stomach.
2. He's got a black eye .
3. Mary spent the whole evening making eye s at other men.
4. The trip to Australia was quite an e ye -opener.
5. My wife and I don't see eye to eye on this matter.
6. She is always the apple of her father's eye .
Ⅱ. Fill in the blanks with proper prepositions:
1. The discovery of the murder weapon provided the key the mystery.
2. Please keep an eye the baby for me.
3. Can you look me the eye and say you didn't steal it?
4. For a moment her words didn't sink.
Ⅰ. 1. He is too greedy in asking for or taking morefood than he can eat.
2. He's been beaten by somebody and there is adark bruised skin around his eye.
3. Mary spent the whole evening looking at othermen amorously and seductively.
4. The trip to Australia was very enlightening andbrought some surprises to me.
5. I don't agree with my wife on this matter.
6. She is loved much by his father.
Ⅱ. 1. to 2. on 3. in 4. in