A. Fatigue toxins could hardly be found in a laborer's
blood.
B. Albert Einstein didn't feel worn out after a day's work.
C. The brain could work for many hours without fatigue.
D. A mental worker's blood was filled with fatigue toxins.
2.According to the author, which of the following can make sitting workers tired?
A. Challenging mental work. B. Unpleasant emotions.
C. Endless tasks. D. Physical labor.
3.What's the author's attitude towards the scientists' ideas?
A. He agrees with them.B. He doubts them.
C. He argues against them. D. He hesitates to accept them.
4.We can infer from the passage that in order to stay energetic, sitting workers need to
________.
A. have some good food
B. enjoy their work
C. exercise regularly
D. discover fatigue toxins
[文章大意] 与常人的认识截然相反,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.C。考查细节理解。根据第一段中的“But a few years ago,scientists tried to find out how long...”和后面的“To the amazement of these scientists...no fatigue at all”可知,许多年前,科学家们惊讶地发现人的大脑是不知疲倦的。
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