The H1Nl virus has been spreading world-wide，it is important for us to know how to control it．Please pay attention to the following points：
1．Don't touch your face．Above all，keep your hands away from your eyes，mouth and nose，all of which serve pathways(途径) for the viruses(病毒) to enter your body．
2．Wash your hands．If you have to touch your face，wash your hands，getting under the fingernails for 20 to 30 seconds with hot soap and water before．Soaps with surfactants(表面活性剂) can deal with flu viruses．
3．Cover your nose and mouth．When someone sneezes or coughs，liquid(液体) drops with flu viruses as far as three feet through the air and land on your nose and mouth，so it's best to keep at least an arm's length distance when talking to someone who shows signs of infection(感染)．In order to protect others，cover your mouth and nose with a tissue(纸巾) when you cough or sneeze，and clean your hands afterward．Viruses can live for hours，or even longer when on the skin or other surfaces such as keyboards．
4．Consider buying a mask in case you need it in the future．Some research suggests that masks reduce the risk of getting the flu viruses by as much as 80%．But it also suggests that if you don't wash hands，the mask doesn't work well．So wash your hands and use the mask，especially wearing face masks in crowded places is also useful．
根据短文内容，选择最佳答案。
小题1:The article mainly tells ________．
A．the H1N1 virus has been spreading world-wide
B．how to control the H1N1 virus
C．cover your nose and mouth
D．everyone should buy a mask in the future小题2:How does the viruses enter your body easily?
A．Get though your mouth．
B．Get though your nose．
C．Get though your eyes．
D．All of the above．小题3:What can we do with the flu viruses?
A．Water．
B．Masks．
C．Soaps with surfactants．
D．Tissues．小题4:How long can the viruses live on the skin or other surfaces such as keyboards?
A．For an hour．
B．For several hours．
C．For two weeks．
D．For a year．小题5:Which of the statements is Not True?
A．Wash your hands before meals．
B．When you cough or sneeze，you should cover your mouth and nose with a tissue．
C．You shouldn't often touch your mouth，eyes and nose．
D．When you put a mask，you can often go to the crowded places．
小题1:B
小题2:D
小题3:C
小题4:B
小题5:D
题目分析：这篇短文主要介绍了四种防止H1N1病毒传播的方法：不用手摸脸，勤洗手，打喷嚏或咳嗽时捂住鼻子或嘴，必要时戴口罩。
小题1:归纳理解题。根据短文描述，可知文章列举的四点都是如何控制H1N1病毒传播的。故选B。
小题2:细节理解题。根据第二段keep your hands away from your eyes，mouth and nose，all of which serve pathways(途径) for the viruses(病毒) to enter your body描述，可知病毒可以通过你的眼睛，嘴，鼻子进入你的身体。故选D。
小题3:细节理解题。根据第三段Soaps with surfactants(表面活性剂) can deal with flu viruses描述，可知表面活性剂能对付病毒。故选C。
小题4:细节理解题。根据第四段Viruses can live for hours，or even longer when on the skin or other surfaces such as keyboards描述可知病毒可以存活几个小时 甚至更长时间，故选B
小题5:归纳理解题。根据最后一段Some research suggests that masks reduce the risk of getting the flu viruses by as much as 80%描述，戴口罩使流感病毒的风险降低了，但并不是就可以经常去人群拥挤的地方。故选D