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3.As a well-known doctor in London,John Snow was willing to help ordinary people (61)exposed(expose) to cholera.He knew that only when (62)the cause of it was found could the (63)deadly(dead) disease be controlled.He has two theories in mind explaining how cholera killed people.(64)Onewas that cholera multiplied in the air without reason; the other was (65)thatpeople absorbed it into their bodies (66)withtheir meals.After many (67)investigations(investigate),he found the drinking water was (68)to blame(blame) because the river had been polluted.Immediately John Snow told the people to remove the handle from the water pump (69)sothat it could not be used.Soon the disease began to slow down.To prevent the disease from happening again,the water companies were instructed not to expose people to (70)polluted(pollute) water any more.Finally"King Cholera"was defeated.

分析 本文主要介绍了伦敦的知名医生约翰•斯诺发现霍乱疾病的病因的故事.在经过多次失败之后,他发现了水是霍乱疾病传播的主要途径.

解答 61.exposed 考查非谓语.句意:作为一个伦敦知名的医生,约翰•斯诺愿意帮助暴露于霍乱中的普通人.此处expose和people是动宾关系,所以用过去分词作定语.故答案是exposed.  
62.the 考查冠词.句意:他知道只有当这种病的病因被发现了,这种致命的疾病才能得到控制.分析语境可知此处特指这种病的病因,故用定冠词,答案是the.  
63.deadly 考查形容词.分析语境可知此处用形容词作定语,修饰下文disease疾病.deadly致命的,所以答案是deadly.  
64.One 考查代词.联系后一句"theother"可知句意为:一个是霍乱不知为什么在空气中繁殖.所以用不定代词One泛指两个理论中的任何一个,故答案是One.
65.that 考查表语从句.句意:另一个是人们伴随着吃饭吸入他们的身体.此处是表语从句,从句中不缺少句子成分且句意完整.所以用that引导表语从句,不作句子成分,故答案是that.  
66.with 考查介词.此处吸入霍乱病菌和吃饭是伴随性动作,所以填介词with表示"带有,伴随",故答案是with.  
67.investigations 考查名词复数.句意:在许多次调查之后,他发现饮用水应该为此担责,因为河水已经被污染了.此处after是介词,后面接名词作宾语.investigations意为"调查"是可数名词.联系前文many许多的,可知此处可数名词用复数,所以答案是investigations.  
68.toblame 考查固定用法.句意:在许多次调查之后,他发现饮用水应该为此担责,因为河水已经被污染了.be to blame是固定用法,意为"对某事应负责任的,应受责备的".所以答案是to blame.  
69.so 考查连词.句意:约翰•斯诺立刻告诉人们把手从抽水机上拆掉,所以人们不能再用它.短语so that表示结果"所以",故答案是so.  

70.polluted 考查形容词.因为形容词形式名词,根据空后的名词water,可知此处应用pollute的形容词形式.所以答案是polluted.

点评 语法填空是通过语篇在语境中考查语法知识的运用能力,在解题前应快速浏览短文掌握大意,在读懂短文的基础上,结合短文提供的特定的语言环境去逐句分析,逐题解答.扎实的语法功底加上准确的理解是解答语法填空题的关键.

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