I passed all the other courses that I took at my University，but I could have never passed botany（植物学）．This was because all botany students had to spend several hours a week in a laboratory looking through a microscope（显微镜）at plant cells，and I could never once see a cell through a microscope．This used to make my professor angry．He would wander around the laboratory pleased with the progress all the students were making in drawing the structure（结构）of flower cells，until he came to me．I would Just be standing there． “I can’t see anything，”I would say．He would begin patiently enough, explaining how anybody can see through a microscope，but he would always end up angrily．claiming that I could too see through a microscope but just pretended that I couldn’t． “It takes away from the beauty of flowers anyway” I used to tell him．”We are not concerned with beauty in this course． “he would say．”We are concerned with the structure of flowers．”“Well，”I'd say．”I can’t see anything．” “Try it just once again．”he'd say，and I would put my eye to the microscope and see nothing at all，except now and again something unclear and milky．”You were supposed to see a clear，moving plant cells shaped 1ike clocks．”“I see what looks like a lot of milk．”I would tell him．This，he claimed，was the result of my not having adjusted the microscope properly，so he would readjust it for me，or rather，for himself．And I would look again and see milk．

    I failed to pass botany that year，and had to wait a year and try again，or I couldn’t graduate．The next term the same professor was eager to explain cell一structure again to his classes． “Well，”he said to tile．happily．”we're going to see cells this time，aren't we?” “Yes，sir，”I said．Students to the right of me and to the left of me and in front of me were seeing cells；what’s more，they were quietly drawing pictures of them in their notebooks．Of course．I didn't see anything．

    So the professor and I tried with every adjustment of the microscope known to man．With only once did I see anything but blackness or the familiar milk，and that time I saw， to my pleasure and amazement，something 1ike stars．These I hurriedly drew．The professor，noting my activity，came to me，a smile on his lips and his eyebrows high in hope．He looked at my cell drawing． “What’s that?” he asked．“That’s what I saw，”I said．”You didn’t，you didn’t，you didn’t!” he screamed，losing control of himself immediately，and he bent over and looked into the microscope．He r8ised his head suddenly．”That’s your eye!”．he shouted．”You’ve adjusted the microscope so that it reflects! You've drawn your eye!”

     ——Selected from University Days by James Thurber

1．Why couldn't the writer see the flower ceils through the microscope?

      A．Because he had poor eyesight．

      B．Because the microscope didn’t work properly．

      C．Because he was not able to adjust the microscope properly．

      D．Because he was playing jokes on his professor by pretending not to have seen it．

2．Why does the writer mention “Students to the right of tile and to the left of rile and in front of me were seeing cells” in Paragraph 2?

      A．To express his professor's satisfaction with his classmates．

      B．To prove his professors excellent teaching ability in his class．

      C．To show more clearly his not seeing the cells by comparing them with himself．

      D．To suggest his classmates' gift for drawing pictures，

3．What does the writer mean by “his eyebrows high in hope” in the last paragraph?

    A．His professor expected him to have seen the cells and drawn the picture of then,．

    B．His professor hoped he could perform his task with attention．

    C．His professor wished him to learn how to draw pictures．

    D．His professor looked forward to seeing all his students finish their drawings．

4．What is the thing like stars that the writer saw in the last paragraph?

A．Real stars．                                            B．His own eye． 

C．Something unknown．                               D．Milk

5．In what writing style did the writer write the passage?

      A．Realistic．                                              B．Romantic．

       C．Serious．                                               D．Humorous．

C

Sometimes we cry because we are sad and sometimes because we are extremely happy．An irritant(刺激物)，such as onion(洋葱) smell or grains of sand in the eye，can also make cry．In this case tears perform an obvious role in getting rid of substances that might harm the surface of the eye．

Dr．William Frey of the Dry Eye and Tear Research Center at St．Paul in Minnesota，USA，believes that tears from emotional causes may perform a similar role．He thinks that crying could get rid of emotional stress by washing away a chemical in the blood caused by strong emotions. To prove his theory, he hopes first to identify this chemical and then see if it is found in tears of sadness or happiness．  

 So far, Dr．Frey has failed to find out the difference between emotional tears and tears caused by an irritant in the eye．This may be because these substances themselves cause a degree of stress and emotion．What he has identified in all tears is a variety of biochemicals(生化物)which are one of the causes of stress．A more detailed study may help us understand why sufferers from stress-related disorders cry less often than healthy people．Dr．Frey is also very interested to see if there are any physiological(生理学的)explanations for why women，in general，cry five times more often than men，on average．

64. The main purpose of Dr．Frey’s study of tears is to           

    A. show that there are two types of tears，caused by irritants and by emotions

    B. find out the cause of stress-related problems and emotional disorders

       C. explain why women cry more often than men

       D. prove that tears can remove a chemical in the blood caused by strong emotions

65. Which of the following is true according to the passage?

       A. Tears fail to help get rid of emotional stress．

       B. Irritants in the eye result in tears without causing stress and emotion．   

       C. Healthy people cry more often than those with stress-related problems．

       D. The biochemical identified by Dr．Frey has nothing to do with stress．

66. We can learn from the passage that __________．

       A. crying does us more harm than good

       B. inner feelings don’t affect our bodies

       C. sorrow may cause some chemicals in our blood

       D. emotional tears are different from tears caused by irritants in the eye

67. Dr．Frey believes that tears from emotional causes may play a role in getting rid of ______．

       A. emotional stress by washing away a chemical in the blood

       B. onion smell or grains of sand

       C. sufferings from irritants

       D. substances that might not harm the surface of the eye

Have you ever had the strange feeling that you were being watched? You turned around and, sure enough, someone was looking right at you!
Parapsychologists (灵学家) say that humans have a natural ability to sense when someone is looking at them. To research whether such a “sixth sense” really exists, Robert Baker, a psychologist (心理学家) at the University of Kentucky, did two experiments.
In the first one, Baker sat behind unknowing people in public places and stared at the backs of their heads for 5 to 15 minutes. The subjects（受试者）were eating, drinking, reading, studying, watching TV, or working at a computer. Baker made sure that the people could not tell that he was sitting behind them during those periods. Later, when he questioned the subjects, almost all of them said they had no sense that someone was staring at them.
For the second experiment, Baker told the subjects that they would be stared at from time to time from behind in a laboratory setting. The people had to write down when they felt they were being stared at and when they weren’t. Baker found that the subjects were no better at telling when they were stared at and when they weren’t.
Baker concludes that people do not have the ability to sense when they’re being stared at. If people doubt the outcome of his two experiments, said Baker, “I suggest they repeat the experiments and see for themselves.”
【小题1】 The aim of the two experiments is to ________.