Ⅰ.阅读理解
We have seen that humour and laughter positively influence our body in many ways, but little research has been done on whether a better sense of humour actually helps keep you from getting sick.However, since people with a better sense of humour have higher IgA levels, and since research has shown that those with higher levels of salivary (唾液的) IgA are less likely to get colds or be infected with Streptococcus (链球菌), humour should reduce the frequency of colds.
The only study to directly examine this question found that the impact of one's sense of humour upon colds depends on the kind of sense of humour you have.It was only individuals whose sense of humour took the form of seeking out and appreciating humour who had fewer and less severe colds/flu than their low humour counterparts.Surprisingly, those whose sense of humour took the form of initiating humour more often did not have fewer or less severe colds/flu.The researchers argued that being a person who likes to tell jokes or otherwise initiate humour takes them into more frequent contact with other people，which serves to expose them to infectious agents more often, robbing them of the advantage that a more active sense of humour otherwise offers.Obviously, more research is required to clear up this confusing picture.
The importance of active use of one's sense of humour in producing humour's health benefits was confirmed in another study in an unusual way.It found that among a group of mothers with newborn infants，those who actively used humour to cope with the stress in their lives had fewer upper respiratory infections and their infants also had fewer infections.This seemed to be because these mothers had higher levels of immunoglobulin A (免疫球蛋白A) in their breast milk.
Among adults, if we look at bodily symptoms alone，independent of any diagnosed illness, there is some evidence that individuals who have more negative reactions to humour report more bodily symptoms and complaints.Students complaining of cardiovascular(心血管的) symptoms and gastroenterological (肠胃病的) symptoms also have been shown to have this more negative reaction to humour.
语篇解读：本文是一篇说明文。文章讲述了良好的幽默感能够使人减少得病的几率。
1．What does the passage mainly talk about?
A．People with a good sense of humour get sick less often.
B．humour can reduce the frequency of colds/flu.
C．Any form of humour can prevent people from getting sick.
D．humour can treat illness.
解析：选A 主旨大意题。通读全文可知，文章讲述了良好的幽默感能够使人减少得病的几率。
2．According to the passage, IgA is .
A．a medicine B．an enzyme
C．a factor D．a measure
解析：选B 推理判断题。根据第一段第二句可知，唾液中的IgA含量高就会使人少生病，由此推断IgA应是一种可以抵抗疾病的酶。
3．Why do newborn infants whose mothers use humour to deal with stress have fewer infections?
A．Because they don't often get upper respiratory infections.
B．Because they are stronger since they were born.
C．Possibly because of the higher levels of immunoglobulin A in their mothers' breast milk.
D．Because their mothers take better care of them.
解析：选C 细节理解题。第三段最后一句This seemed to be because these mothers had higher levels of immunoglobulin A (免疫球蛋白A) in their breast milk. 说明了原因。
4．Students with some bad bodily symptoms show towards humour.
A．a positive attitude B．a negative attitude
C．a neutral attitude D．an unclear attitude
解析：选B 细节理解题。文章最后一段告诉我们对待幽默的消极反应会体现在身体上，比如说，胃肠不适等。因此有不好的身体症状的学生对待幽默的态度是消极的。
