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    16．Hello，everyone．First let me introduce myself．My name is Jenny Barker，and I work at St．James Hospital．As most of you know，I'm here today to talk about blood transfusion．The idea of blood transfusion is very simple，but that idea has saved many thousands of lives over the past century．Often，if a person is in an accident，or has an operation，he will lose a lot of blood．And these are times when blood transfusion is needed．This simply means taking blood from another person and putting it into the body of the patient．Doctors have been carrying out blood transfusions for hundreds of years．At first，they used blood from sheep．But that wasn't very successful．It wasn't until the last century that doctors realized there are several types of blood，and that the correct type must always be used．Once they knew that，blood transfusion had become almost a hundred percent successful．So，you might be thinking：what does this have to do with me？Well，it has something to do with all of us．Hospitals need to keep banks of blood ready for transfusion．The only way they can get that blood is from ordinary people like you．All the human body has five liters of blood，and we take 0.5 liters from each person．This is completely safe．In fact，your body will make enough blood to replace it after around a day．Giving blood only takes a short while，and it doesn't hurt．It costs you nothing，and it could save a life．So please give blood．
    66．What might the speaker most probably be？A
    A．A doctor or a nurse
    B．An engineer
    C．A teacher
    D．A scientist．
    67．What is a blood transfusion？D
    A．Losing a lot of blood in a serious accident or a difficult operation．
    B．Finding out the amount of blood a patient needs for an operation．
    C．Identifying the right type of blood a person has for the patient．
    D．Taking blood from someone else and putting it into a patient's body．
    68．What finally made almost every blood transfusion successful？B
    A．The founding of a blood bank
    B．The discovery of blood types．
    C．The experiment with sheep blood
    D．The developed skill of taking out blood．
    69．If you give 10% of your blood，how long does it take your body to replace it？D
    A．One week
    B．Five days
    C．Two days
    D．One day．
    70．What is the main purpose of the speech？A
    A．To call on people to give blood
    B．To explain what a blood transfusion is．
    C．To review the history of research on blood
    D．To explain the theory of blood replacement．

    分析 本文是一篇演讲稿，是关于输血何献血话题的演讲，其中讲了什么是输血及输血的发展过程，最后呼吁人们献血以挽救病人的生命．

    解答 ADBDA
    66．A  推理判断题  本文是一篇演讲稿，是关于输血何献血话题的演讲，由此可以推知演讲人可能是一名医生或护士，故答案为A
    67．D 细节理解题 根据This simply means taking blood from another person and putting it into the body of the patient．可以得知这是对输血进行定义，故答案为D
    68．B  细节理解题 根据It wasn't until the last century that doctors realized there are several types of blood，and that the correct type must always be used．Once they knew that，blood transfusion had become almost a hundred percent successful．可知，了解了血型之后，输血才变得成功，故答案为B
    69．D  数字计算题 根据All the human body has five liters of blood，and we take 0.5 liters from each person．This is completely safe．In fact，your body will make enough blood to replace it after around a day．可知，10%就是0.5升，大约一天就可以更新，故答案为D
    70．A  推理判断题 根据最后两句Giving blood only takes a short while，and it doesn't hurt．It costs you nothing，and it could save a life．So please give blood．
    可以推知，演讲者呼吁人们献血，故答案为A

    点评 做阅读时经常犯错的主要原因是，仅凭读过文章后残留在脑海中的一丝印象来勾选答案，这样便很容易掉入出题人故意设布下的题目陷阱．所谓阅读理解，对于题目的理解一定要忠实于原文，因此，每一道题都应该与原文作全面的对比与核查，再得出答案．也就是说，阅读理解的每一道题目，在原文都应该有明确的出处，我们把这一出处叫做原文相关句，（1）排除与原文相关句主题不一致的选项（2）排除与原文相关句态度相反的选项  （3）排除用于过于极端或负面的选项（4）注意结合文章主旨和主题去排除．

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