55．A.in fact

　　B．in case

　　C．as a result

　　D．on the contrary

　　解析：选B。in fact表示“事实上”，在句子中作状语；in case是连词，意思是“万一”；as a result是“因此”；on the contrary的含义是“相反”。由句意可知，此处应用in case。

　　第三部分　阅读理解(共20小题；每小题2分，满分40分)

　　阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。

　　A

　　Many people catch a cold in the springtime

　　or fall.It makes us wonder...if scientists can send a man to the moon，why can’t they find a cure for the common cold.The answer is easy.There are literally hundreds of kinds cold viruses out there.You never know which one you will get， so there isn’t a cure for each one.

　　When a virus attacks your body，your body works hard to get rid of it.Blood rushes to your nose and brings congestion(充血) with it.You feel terrible because you can’t breathe well，but your body is actually “eating” the virus.Your temperature rises and you get a fever，but the heat of your body is killing the virus.You also have a runny nose to stop the virus from getting to your cells.You may feel miserable，but actually your wonderful body is doing everything it can to kill the cold.

　　Different people have different remedies for colds.In the United States and some other countries，for example，people might eat chicken soup to feel better.Some people take hot baths and drink warm liquids.Other people take medicines to stop the fever，congestion，and runny nose.

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