Ⅳ.阅读理解
A
Doctors are reporting a severe form of swine flu that goes straight to the lungs，causing severe illness in otherwise healthy young people and requiring expensive hospital treatment，the World Health Organization said on Friday.
Some countries are reporting that as many as 15 percent of patients infected(感染)with the new H1N1 virus need hospital care，further straining already overburdened healthcare systems，WHO said.
“During the winter season in the southern parts of the world，several countries have viewed the need for intensive care as the greatest burden on health services，” it said.
“Preparedness measures need to predict this increased demand on intensive care units，which could be overwhelmed by a sudden burst in the number of severe cases.”
Earlier，WHO reported that H1N1 had reached epidemic(蔓延) levels in Japan，signaling an early start to what may be a long influenza season this year，and that it was also worsening in tropical regions.
“Perhaps most significantly，clinicians from around the world are reporting a very severe form of disease，also in young and otherwise healthy people，which is rarely seen during seasonal influenza infections，” WHO said.
“In these patients，the virus directly infects the lung，causing severe respiratory(呼吸)failure.Saving these lives depends on highly specialized and demanding care in intensive care units，usually with long and costly stays.”
WHO estimates that more than 230 million people globally have asthma(哮喘)，and more than 220 million have diabetes(糖尿病).Obesity may also worsen the risk of severe infection，WHO said.The good newspeople infected with AIDS virus do not seem to be at special risk from H1N1，WHO said.
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。
答案 D
4.According to WHO，people with________are less likely to suffer from H1N1.
A.AIDS virus B.diabetes
C.asthma D.obesity
解析 细节理解题。从最后一段最后一句话“The good news people infected with AIDS virus do not seem to be at special risk from H1N1，WHO said，”可知正确答案。
答案 A
