【"Washyourhands!"Howmanytimeshaveyouheardthatfromyourparents？Youmightthinkthey'rejustcomplainingyou，butactuallythemostimportantthingyoucandotokeepfromgettingsickistowashyourhands．AccordingtotheCent】

　　"Wash your hands!"How many times have you heard that from your parents？You might think they're just complaining you，but actually the most important thing you can do to keep from getting sick is to wash your hands．

　　According to the Centers for Disease Control and Prevention，if you don't wash your hands often，you can pick up germs from other sources and then make yourself sick．You're at risk every time you touch your eyes，nose，or mouth．In fact，one of the most common ways people catch colds is by rubbing their noses or their eyes after the cold virus has gotten on their hands．

　　If people don't wash their hands often （In particular when they're sick），they can spread germs directly to other people or onto surfaces that others touch．And before they know it，everyone around them iscomingdownwithsomething!

　　Think about all of the things that you touched today-from the telephone to the toilet．Maybe you blew your nose and played with your dog．Whatever you did，you came into contact with germs．So it's easy for germs on your hand to end up in your mouth．

　　By washing your hands often in the right way，you'll wash away germs-such as bacteria and viruses that you have picked up from other people，through polluted water，food and surfaces，or from animals and animal wastes．

　　Do you know that 1out of 5people don't wash their hands after using the restroom？Students don't wash their hands often or well．In one study，only 58% of female and 48% of male middle-school and high-school students washed their hands after using the bathroom．

　　Remember，washing your hands often is the key to preventing the spread of many common illnesses．

　　34．What can we learn from the passage？___

　　A．Some parents are always complaining children．

　　B．We will catch colds if we rub our noses often．

　　C．If we can wash our hands often，we will never get sick．

　　D．It is easy for us to catch colds if we get the cold virus on ou