實用英語綜合訓(xùn)練與自測。3

內(nèi)容概要

《實用英語:綜合訓(xùn)練與自測(第3版)》：權(quán)威性：本套教材由教育部規(guī)劃并推薦使用。編者與審者均是國內(nèi)知名專家教授及多年從事英語教學(xué)的優(yōu)秀教師。
先進性：本套教材積極吸收了國內(nèi)外最新外語教學(xué)研究成果及教材編寫理論，創(chuàng)造了?？茖哟斡⒄Z教學(xué)的嶄新體系。
實用性：本套教材體現(xiàn)了提高學(xué)生語言應(yīng)用能力的宗旨，更密切結(jié)合了學(xué)生畢業(yè)后實際工作的需要。
通用性：本套教材在選材和練習設(shè)計上，注意了文、理、工各科知識的相互滲透，兼顧了各專業(yè)的需要。

書籍目錄

Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
Unit 6
Unit 7
Unit 8
Test 1 (Unit I-Unit 4)
Test 2 (Unit 5-Unit 8)
Test 3 (Unit 1-Unit 8)
Key to Exercises
Key to Tests

章節(jié)摘錄

　　If you have ever flown across several tme zones, you must have experienced jet lag You arrived in a new time zone, but your body was still living on the time in the old time zone. You were wide-awake and ready for dinner in the middle of the night, and you wanted to sleep all day.　　People suffer from jet lag because all living things have a biological clock. Plants and animals are all in rhythm with the natural divisions of time —day and night and the seasons.　　Some French scientists did an experiment with honeybees. They put out sugar water every morning at 10:00 and at noon, and the bees came to drink the water at exactly the right time. Then the scientists put the sugar water in a room that was brightly lit 24 hours a day. They started putting the sugar water out at 8:00 p.m.It took the bees a week to find it at the different hour, but from then on they came to eat in the evening instead of in the morning.　　Later the scientists took the honeybees to New York. The bees came for the food at the time their bodies told　　them, only it was 3:00 p.m.New York time.Their bodies were still on Paris time.　　Humans, like other animals, have a biological clock that tells us when to sleep and eat.It causes other changes, too. Blood pressure is lower at night, the heartbeat is slower, and the body temperature is a little lower.　　The honeybees in the experiment reset their biological clock for different feeding hours. Humans do this, too. People who work at night learn to sleep during the day and eat at night. Students who fly halfway across the world to study in another country get used to the new time zone after a few days. Our bodies are controlled by a biological clock, but we can learn to reset it at a different time. ……

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