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閱讀理解

　　When you cut your skin, you bleed(流血)．If a person loses a lot of blood, he will become ill and may die．Blood is very important．People have always known that．At one time, some people even drank blood to make them strong!

　　When doctors understand how blood goes around inside the body, they try ways of giving blood to people who need it．They take blood from the healthy people and give it to people who need it．This is called"blood transfusion"．The blood goes from the arm of the healthy person into the arm of the sick person．

　　But there are two problems．First, it does not always work．Sometimes people die when they have blood transfusion．Later, doctors find that we do not all have the same kind of blood．There are four groups－O, A, B and AB．We all have blood of one of these groups．They also find that they can give any kind of blood to people of group AB．But they find that they must give A－group blood to A－group people and B－group blood to B－group people．I have O－group blood and the doctor told me that I could give blood to anyone else safely．

　　There is another problem．To give blood of the right kind, doctors have to find a person of the right blood group．Often they can not find a person in time．If they have a way to keep the blood until someone needs it, they can always have the right kind of blood．At first they find they can keep it in bottles for fifteen to twenty days．They do this by making it very cold． Then they find how to keep it longer．In the end they find a way of keeping blood for a very long time．

　　We call a place where we keep money a "bank"．We call a place where we keep blood a"blood bank"．One day, when you grow up, you may decide to give blood to a "blood bank" ．In this way you may stop someone from dying．Or perhaps one day you may become ill． You may need blood． The "blood bank" will give it to you．

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　　Another person's enthusiasm(熱情)was what made me move toward the success．That person was my stepmother．

　　I was nine years old when she entered our home in Virginia．My father 　　1　　 me to her with these words：“This is an 　　2　　 boy．He will probably throw rocks at you tomorrow morning．”

　　My stepmother walked over to me, raised my 　　3　　 slightly up and looked into my eyes．Then she looked at my father and replied, “You are 　　4　　．This is not a bad boy at all, 　　5　　 a smart one who hasn't yet found an outlet(釋放的途徑)for his enthusiasm．”

　　That statement began a friendship between us．　　6　　 had ever called me smart．My family and neighbors had built me up in my mind with a bad boy．My stepmother changed all that．

　　She 　　7　　 many things．She persuaded my father to go to a dental(牙科)school, from which he graduated with honors．She 　　8　　 our home into the county center, where my father's career(事業(yè))could be more 　　9　　 and my brother and I could be better educated．

　　When I turned fourteen, she bought me a secondhand typewriter and told me that she believed that I could become a 　　10　　．I thanked her for her enthusiasm and I began to write for local newspapers．I was keeping 　　11　　 and never gave up．Later, I went to interview Andrew Carnegie and received the task which became my life's work．In fact, I wasn't the 　　12　　 beneficiary(受益者)．My father became the 　　13　　 man in town．My brother and stepbrothers became a physician, a dentist, a lawyer, and a college president．

　　What power 　　14　　 has! When that power is let out to support one's mind, it will become an irresistible(不可抗拒的)power．You can pass that power to anyone 　　15　　 needs it．This is probably the greatest work you can do with your enthusiasm．

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