All types of stress study, whether under laboratory or real-life situations, study mechanisms for increasing the arousal(兴奋) level of the brain.

    The brain blood flow studies show that reciting the days of the week and months of the year increases blood flow in appreciate areas, whereas problem solving which demands intense concentration of a reasoning type produces much larger changes in the distribution of blood in the brain.

    Between these basic studies of brain function and real life situations there is still a considerable gap, but reasonable deduction seems possible to try and understand what happens to the brain. Life consists of a series of events which may be related to work or to our so-called leisure time. Work may be relatively automatic—as with typing, for instance. It requires intense concentration and repetition during the learning phase to establish a pattern in the brain. Then the typist's fingers automatically move to hit the appropriate keys as she reads the words on the copy.

    However, when she gets tired she makes mistakes much more frequently. To overcome this she has to raise her level of arousal and concentration but beyond a certain point the automaticity is lost and thinking about hitting the keys leads to more mistakes.

    Other jobs involve intense concentration such as holding bottles of wine up to a strong light and turning them upside down to look for particles of dirt falling down. This sounds quite easy but experience teaches that workers can do this for only about thirty minutes before they start making a mistake. This is partly because the number of occasions with dirt in the bottle is low and the arousal level, therefore, falls. Scientists have shown that devices to raise arousal level will increase the accuracy of looking for relatively rare events. A recent study of the effect of loss of sleep in young doctors showed that in tests involving a challenge to their medical judgment when short of sleep they raised their arousal level and became better at tests of grammatical reasoning as well.

　　  1. Problem solving——according to the brain blood flow studies.

　　　　   A. is based on the ability to recite the time

　　　　   B. causes changes in the distribution of blood in the brain

　　　　   C. increases blood flow in some areas of the brain

　　　　   D. demands intense concentration of blood in certain areas

　　  2. The writer suggests that——.

　　　　    A. the difference between the laboratory studies and real-life situations will be reduced

　　　　    B. the gap between the laboratory studies and real-life situations is too large to fill up

　　　　    C. the gap between the laboratory studies and real-life situations can be closed by proper reasoning

　　　　    D. the results obtained in the laboratory exactly reflects the real-life situations

　　  3. Why does say the examining bottles of wine is a hard work?

　　　　    A. Because it requires high level of automaticity.

　　　　    B. Because the bottles must be held upside down.

　　　　    C. Because it is difficult to see the particles of dirt.

　　　　    D. Because most bottles are all fight.

　　  4. A key factor is the ability to reason in——according to the passage.

　　　　    A. the amount of sleep the subject has had

　　　　    B. the extent to which the subject has been taught to reason

　　　　    C. the subject's knowledge of grammar

　　　　    D. the level of arousal of the subject

    The brain blood flow studies show that reciting the days of the week and months of the year increases blood flow in appreciate areas, whereas problem solving which demands intense concentration of a reasoning type produces much larger changes in the distribution of blood in the brain.

    Between these basic studies of brain function and real life situations there is still a considerable gap, but reasonable deduction seems possible to try and understand what happens to the brain. Life consists of a series of events which may be related to work or to our so-called leisure time. Work may be relatively automatic—as with typing, for instance. It requires intense concentration and repetition during the learning phase to establish a pattern in the brain. Then the typist's fingers automatically move to hit the appropriate keys as she reads the words on the copy.

    However, when she gets tired she makes mistakes much more frequently. To overcome this she has to raise her level of arousal and concentration but beyond a certain point the automaticity is lost and thinking about hitting the keys leads to more mistakes.

    Other jobs involve intense concentration such as holding bottles of wine up to a strong light and turning them upside down to look for particles of dirt falling down. This sounds quite easy but experience teaches that workers can do this for only about thirty minutes before they start making a mistake. This is partly because the number of occasions with dirt in the bottle is low and the arousal level, therefore, falls. Scientists have shown that devices to raise arousal level will increase the accuracy of looking for relatively rare events. A recent study of the effect of loss of sleep in young doctors showed that in tests involving a challenge to their medical judgment when short of sleep they raised their arousal level and became better at tests of grammatical reasoning as well.

　　  1. Problem solving——according to the brain blood flow studies.

　　　　   A. is based on the ability to recite the time

　　　　   B. causes changes in the distribution of blood in the brain

　　　　   C. increases blood flow in some areas of the brain

　　　　   D. demands intense concentration of blood in certain areas

　　  2. The writer suggests that——.

　　　　    A. the difference between the laboratory studies and real-life situations will be reduced

　　　　    B. the gap between the laboratory studies and real-life situations is too large to fill up

　　　　    C. the gap between the laboratory studies and real-life situations can be closed by proper reasoning

　　　　    D. the results obtained in the laboratory exactly reflects the real-life situations

　　  3. Why does say the examining bottles of wine is a hard work?

　　　　    A. Because it requires high level of automaticity.

　　　　    B. Because the bottles must be held upside down.

　　　　    C. Because it is difficult to see the particles of dirt.

　　　　    D. Because most bottles are all fight.

　　  4. A key factor is the ability to reason in——according to the passage.

　　　　    A. the amount of sleep the subject has had

　　　　    B. the extent to which the subject has been taught to reason

　　　　    C. the subject's knowledge of grammar

　　　　    D. the level of arousal of the subject

短文填词（共10小题；每小题1分，满分10分）
阅读下面短文，根据以下提示：1）汉语提示，2）首字母提示，3）语境提示，在每个空格内填入一个适当的英语单词，并将该词完整地写在右边相对应的横线上。所填单词要求意义准确，拼写正确。
Last Sunday I went to the teahouse where my father works. I was helping my father in the teahouse when a foreign v___【小题1】_____ entered. I greeted her with a warm smile and talked with her ___【小题2】____English. The young lady, ____【小题3】____ called herself Judy, came from Canada.She told me that ____【小题4】____ was the first time that she had been in China and so far she had _____【小题5】____(享受) her stay here. All the people she met in the country were f___【小题6】_____ to her. In the late afternoon I s_____【小题7】___ her around our town. Before she left, Judy thanked me for my kindness. B___【小题8】_____, she praised me for my spoken English. You can never imagine how ___【小题9】_____(兴奋的) I was when ______【小题10】__(听到) what she said.