Toliftsomethingfromthefloorcorrectlyfirstbendyourkneesandsquatdown.Keepyourbackandhips(臀部)andwaist(腰部)inaline.Ifyoubendoverthemusclesinyourlowerbackcanbecomehu

Toliftsomethingfromthefloorcorrectlyfirstbendyourkneesandsquatdown.Keepyourbackandhips(臀部)andwaist(腰部)inaline.Ifyoubendoverthemusclesinyourlowerbackcanbecomehurteasily.Ifyoukeepyourbackandhipsstraightthemusclesarestrongerbecausetheyhavemuchmoresupport.Theothermusclescanthenhelpthelowerbackmuscles.

Asyousquatdowntrytogetclosetotheobjectaspossible.Forexampleifyouaregoingtopickupaheavyboxsquatdowndirectlyinfrontofit.

Maybeyouwillhavetospreadyourkneesandlegs.Putonekneeoneachsideofthebox.Rememberatalltimestokeepyourbackstraight.

Putyourhandsundertheobjectthatisinfrontofyoubetweenyourknees.

Tolifttheobjectyoushouldstandupslowly.Useyourmusclesinordertostandup.Inotherwordsliftwithyourlegsnotwithyourback.

36.Theunderlinedword"squat"means________.

A.tobendoveryourwaist B.tobendyourselfbybendingyourlegs

C.toloweryourselfbybendingyourlegs D.tostandstraight

37.Youshouldkeepyourbackstraightsothat________.

A.themusclescan’tbehurt B.themuscleswillhavemoresupport

C.youseemtobestranger D.youwillgetmoremuscles

38Thecorrectwaytoliftsomethingheavyfromtheflooris________.

A.tobendoverfromyourwaistfirst

B.tobendyourkneesandsquatdownfirst

C.tokeepyourbackinaline

D.toputyourhandsundertheobject

39.Whatliftstheobjectinfact?

A.Themusclesofyourarms. B.Themusclesofyourback.

C.Yourhands. D.Yourlegmuscles.