Silver Burdett/

Science: Understanding Your Environment/

Your Healthy Body p. 265/

1975/

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/

S4N24/

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/-/Do you think*D1 [DOyou have ever had*D1 a disease? ]/-/A disease dihZEEZ=APR01 keeps*D1 your body (from working=GOP050 )the way=U--04 [JRit should.*- ]/-/You have*D1 a disease [ARwhen you have*D2 a cold or the chicken pox. ]/c/But a sprained=P--01 ankle is*N1 not a disease; /C/neither is*N0 a cut=P--01 finger. /-/Most diseases and injuries are*A1 not serious. /-/They affect*D1 only a small part (of your body. )/-/A small cavity (in a tooth )does*D1 little harm (to other parts )(of the body. )/-/A bruise (on your arm )may be*A1 painful. /c/But it is*A1 not likely to keep=IAV071 you (from using=GOP031 )your arm. /-/This does not mean*N1 [PNthat you should not take*D1 care (of such conditions. )]/-/A cavity (in a tooth )should be cleaned*P and filled*P [ARso it will not grow*A1 larger. ]/-/Cuts and other breaks (in the skin )should be kept*P1 clean. /-/The body soon heals*D2 most small injuries and diseases. /-/Other diseases can be*A1 more serious. /-/They can do*D1 great harm (to many parts )(of the body. )/-/They can make*D1I you feel=IDO071 too ill to move=IAV030 about. /-/Many (of these diseases )are caused*P (by bacteria bakTIHReeuh=APR01 or viruses )VYErusuz.=APR01 /-/Bacteria and viruses are*A1 too small to be seen=IAV060 (without a microscope. )/-/Bacteria can be seen*P (with regular microscopes )[JRthat use*D1 light. ]/-/Viruses are*A1 so small [ARthey must be viewed*P (with special microscopes. )]/-/They must be magnified*P several thousand times=U--03 to be seen.=IAV030 /-/Bacteria and viruses cause*D1 many severe diseases. /-/Many (of these diseases )spread*- (from one person )(to another. )/-/The common cold is*N1 one (of these. )!!!!!!!!