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Researchers have recently found a connection between diseases and stressful situations. To test this theory, psychologists are t
Researchers have recently found a connection between diseases and stressful situations. To test this theory, psychologists are t
admin
2013-07-01
51
问题
Researchers have recently found a connection between diseases and stressful situations. To test this theory, psychologists are trying to find a link between the brain and the immune system.
Our bodies are likely to get various diseases and it depends on how well our immune system works. Biologists used to think that the immune system was a separate, independent part of our bodies. Recently, however, they have found that our brain can affect our immune system. This discovery indicates that there may be a connection between emotional factors, such as stress or depression, and illness.
Although many doctors in the past suspected a connection between emotional factor and disease, they had no proof. Scientists have only recently discovered how the brain and the immune system function. Before this, no one could see a link between them. As a result, medical science never seriously considered the idea that psychological factors could cause disease.
Several recent studies showed a connection between stress and illness. For example, researchers went to an American military school to study the students. They found that the sick students there had a lot of academic pressure and wanted to achieve, but they were not very good students. In a similar study, researchers studied a group of student nurses and found that the nurses who developed cold sores were the ones who described themselves as generally unhappy people.
In addition to these results, which support their theory, researchers are also looking for proof that stress can damage the immune system. Researchers studied recently bereaved people, i.e. , people whose loved ones have just died, because they are more likely to become ill or die. By examining the immune system of recently bereaved people, the researchers made an important discovery. They examined some white blood cells which are an important part of the immune system. They were not functioning properly. The fact that they were not working correct indicates that severe psychological stress, such as a loved one’s death, may damage an important part of our immune system.
There is still no positive proof of a connection between the immune system and psychological factors. Researchers also say that the results of the studies on bereaved people could have a different explanation. For example, bereaved people often sleep and eat less than normal, or may drink alcohol or take medication. These factors can also affect the immune system. More research is needed to clearly establish the connection between the immune system and psychological factors.
The study of recently bereaved people shows that______.
选项
A、stress is directly linked with illness
B、bereaved people should control their emotions properly
C、white blood cells are an important part of the immune system
D、there is obvious connection between immune system and psychological factors
答案
C
解析
细节题.文章的第五段描述了另一个研究。研究者调查剐刚失去亲人的人(bereaved people),因为他们较容易得病.甚至死去.通过检查他们的免疫系统,研究者发现其免疫系统的白细胞不正常,而白细胞是免疫系统中的重要组成部分。文章中有关针对失去亲人的人们的研究中并没有说明A压力直接影响疾病;B失去亲人的人应该调整自己的情绪;以及最后一段的第一句也说明还没有明确的证据表明两者之间的必然联系,答案D是错的。C是正确答案。
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大学英语六级
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