注:1. vulnerable易受伤害的2. immune defense 免疫系统3. found之后是试验告诉我们的观点4. depress压抑,de往下
Other researchers aGREe. Jay Weiss, a psychologist at Duke University School of Medicine, has shown that animals who are allowed to control unpleasant stimuli don't develop sleep disturbances or changes in brain chemistry typical of stressed rats. But if the animals are confronted with situations they have no control over, they later behave passively when faced with experiences they can control. Such findings reinforce psychologists' suspicions that the experience or perception of helplessness is one of the most harmful factors in depression.注:1. 看第一句三个单词就知道本段内容和上一段相同。2. passive被动的 21. Laudenslager's experiment showed that the immune system of those rats who could turn off the electricity ______.
A) was strengthened B) was not affected
C) was altered D) was weakened注:定位文章第一段found之后
22. According to the passage, the experience of helplessness causes rats to ______.
A) try to control unpleasant stimuli
B) turn off the electricity
C) become abnormally suspicious D) behave passively in controllable situations
注:定位第二段But之后那句话
23. The reason why the mice in Ader's experiment avoided saccharin was that ______ .
A) they disliked its taste
B) it affected their immune systems
C) it led to stomach pains
D) they associated it with stomachaches 22. The first paragraph is mainly about _____. (A) the teenagers' criticism of their parents (B) misunderstandings between teenagers and their parents (C) the dominance of the parents over their children (D) the teenagers' ability to deal with crises注:段落主旨,B和C只说了一部分。