题目内容：
请阅读下面短文，掌握其大意，然后从36~55各题所给的四个选项（A、B、C和D中），选出最佳选项，并在答题卡上将该选项的标号涂黑People often fall ill because of me______36_____, they can hardly blame me; it is largely their own___37___ , A tired person may get38, especially when he goes to crowded places with polluted air． A sudden change in____39____is another factor． In hot summer, people turn on the air-conditioner upon returning home． They will catch a cold easily．
My latest victim is an energetic student． After school, he played football hard for two hours． Though_____40______,he still went to the cinema． Then he got back home and took a cold shower immediately．
I seized this golden chance to_____41_______him． He reacted, trying to___42_____me, but I was already______43_____deep in his throat． He kept sneezing（打喷嚏）and his nose was running．44he put on some warm clothes, it didn’t work, for there were too many of us． Besides, his sore throat kept____45______him, and he developed a cough to force me and my family out, but____46___,
The next day he couldn’t go to___47____, He had lost his appetite and was not as____48_____as before． His mother made him orange juice every few hours for more vitamin C, which would help his_____49____,
For two days he was______50_______by his mother． As he rested more, his defense strengthened and I began to feel the___51___ , I knew I had to_____52______him before long． But I am not the one who gives up easily, and I made every effort to fight back．_____53___, it was my turn to feel_____54_____now, for his defense system was starting an all-out attack against me． I became_____55_______and finally my time was over． A．Therefore
B．Besides
C．However
D．Then
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