20142015学年度高中英语（人教版）同步课堂资源选修六Unit1Art课时作业.doc

第  PAGE 6 页 共  NUMPAGES 6 页 课时作业26 Ⅰ.阅读理解 A (2013·辽宁卷)Here is an astonishing and significant fact：Mental work alone cant make us tired.It sounds absurd.But a few years ago，scientists tried to find out how long the human brain could labor without reaching a stage of fatigue(疲劳)．To the amazement of these scientists，they discovered that blood passing through the brain，when it is active，shows no fatigue at all！If we took a drop of blood from a day laborer，we would find it full of fatigue toxins(毒素)and fatigue products.But if we took blood from the brain of an Albert Einstein，it would show no fatigue toxins at the end of the day.[来源:Z*xx*k.Com][来源:学科网ZXXK] So far as the brain is concerned，it can work as well and swiftly at the end of eight or even twelve hours of effort as at the beginning.The brain is totally tireless.So what makes us tired? Some scientists declare that most of our fatigue comes from our mental and emotional(情感的)attitudes.One of Englands most outstanding scientists，J.A.Hadfield，says，“The greater part of the fatigue from which we suffer is of mental origin.In fact，fatigue of purely physical origin is rare.”Dr.Brill，a famous American scientist，goes even further.He declares，“One hundred percent of the fatigue of a sitting worker in good health is due to emotional problems.”[来源:学|科|网Z|X|X|K] What kinds of emotions make sitting workers tired？Joy？Satisfaction？No！A feeling of being bored，anger，anxiety，tenseness，worry，a feeling of not being appreciated—those are the emotions that tire sitting workers.Hard work by itself seldom causes fatigue.We get tired because our emotions produce nervousness in the body. [文章大意]本文是一篇说明文。有研究表明人的大脑不会疲劳。造成疲劳感的是人的情绪和情感，而不是大脑的反应。 1．What surprised the scientists a few years ago? A．Fatigue toxins could hardly be found in a laborers blood. B．Albert Einstein didnt feel worn out after a days work. C．The brain could work for many hours without fatigue. D．A mental workers blood was filled with fatigue