阅读理解.

Everyoneknowsthatexerciseisimportant.Weallneedtoexercise.Doctorssayitisgoodforus.It

makesyourheartandbodystrong.Childrenwhooftenexercisearemorealert(灵活).Thatmeansthey

dobetterintestsandschoolworkthanthosewhodon'texercise.

Theyaremanywaystoexercise.Youcanwalk,run,swim,skate,orplayballgames.Makesureyou

exerciseinthefollowingways:Youhavetolikewhatyouaredoing.Exerciseenough(足够的) butnot

toomuch.It'sbesttoexercisetwiceaweek.Thirtyminutes(分钟)eachtimeisenough.Tryallkindsof

sportsuntil(直到)youfindone,twooreventhreesportsthatfeelrightforyou.

Youcanexerciseatfitnesscenters.Theyhavealotofequipment(设备)there.Theequipmentwill

helpexerciseyourarms,legsandotherpartsofyourbodytomakeyouhealthy.Somepeoplebuy

equipmentfortheirhomes.Butit'sveryexpensive.

1.theunderlineword"fitnesscenters"inthepassagemeans_____.

A.商务中心

B.健身中心

C.医疗中心

D.购物中心

2.Thesport"_____"isnottoldinthepassage.

A.playingsoccer

B.skateboarding

C.walking

D.running

3.Thedoctorssaythatexercisecanmakeyourheartandbody_____.

A.ill

B.happy

C.strong

D.health

4.About"exercise",whichstatementofthefollowingisNOTright?

A.Thirtyminutes'exerciseeachtimeisenough.

B.Youhavetoexercisetoomucheveryday.

C.Youneedn'tdoallkindsofsportstokeephealthy.

D.Youhavetolikethesportsthatyouaredoing.

5.It'sbesttoexercise_____.

A.atfitnesscenters

B.ingroups

C.inthemorning

D.twiceaweek