1．The newly­discoverd swine flu is quite different in that

　　________.

　　A．it needs no hospital treatment

　　B．it can attack elder citizens easily

　　C．it directly destroys people's brains

　　D．it causes people respiratory failure

　　解析　细节理解题。从第七段中的“In these patients，the virus directly infects the lung，causing severe respiratory(呼吸)failure.”这句话，可知选项D正确。

　　答案　D

　　2．The underlined word “straining” in the 2nd paragraph most probably means________.

　　A．improving

　　B．reducing

　　C．worsening

　　D．causing

　　解析　词义猜测题。根据上下文可以猜测出该词是“恶化，病变”的意思。

　　答案　C

　　3．From the passage we know________.

　　A．the influenza season this year will not last long

　　B．people don't necessarily prepare for the burst of swine flu

　　C．the greatest burden on health services is the shortage of doctors

　　D．it will cost a lot of money to cure those infected with H1N1

　　解析　推理判断题。从第七段中的“Saving these lives depends on highly specialized and demanding care in intensive care units，usually with long and costly stays.”这句话，可知选项D正确。

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