YourNoseknows

IfIweretoaskyoutocloseyoureyesandIgaveyouapieceofappletoeat，wouldyoubeabletotellmewhatitisjustbytastingit？Ofcourse，youcould．Yourtonguehelpsyouknowwhatdifferentfoodstastelike．Doyouknowthatfoodswouldtastedifferentifyoudidnothaveanose？

WhatYouNeed

☆afriendtohelp

☆smallpiecesofanyfoodlikecarrot，orange，banana-whateveryouhave

☆smallpiecesofapples，raw（uncooked） potatoand （ifyouarebrave） onion

WhatYouDo

Thereareactuallythreedifferentexperiments．Youandyourfriendshouldtaketurnstryingthemoneachother．

Experiment1：

Haveyourfriendclosehereyesandopenhermouth．Giveherapieceofthefoodandaskhertotasteit．Then，askherwhatshethinksitis．Shewillprobablyguesscorrectly．

Experiment2：

Whileyourfriendhashereyesclosed，giveherapieceofrawpotato．Atthesametime，holdapieceofapplerightunderhernose．Askhertoeatthepotatoandtellyouwhatshethinksitis．Shewillsayitisapieceofapple!Youcanevendoittheotherwayaround，andshewillthinksheiseatingapotato，or，perhaps，shewon'tbeabletonamewhatsheiseating．

Experiment3：（forthebrave）

Takeapieceofrawonion．Youdon'thavetocloseyoureyesthistime．Pressyournoseclosedwithyourotherhandsothatnosmellscangetintoyournose．Noweatasmallpieceoftheonion．Surprise!Aslongasyouholdyournose，youwillnotbeabletotastetheonion．

TheScienceSecret

Youalreadyknowthesciencesecret．Yournoseandyourtongueworktogethertomakefoodtastethewayitdoes．Yourtongue，however，cantasteonlycertainflavorslikesalty，bitter，sour，andsweet．Alloftheother"tastes"areactually"smells"，andyouneedyournosetotastethem．

Oh，youmightusethissciencesecretthenexttimeyouareforcedtoeatsomethingyoudon'tlikethetasteof．Ifyouholdyournosewhileyoueatit，youwon't"taste"it

atall．

53．InExperiment1，youshould___beforegivingyourfriendapieceoffood．

A．askhertotastethefood

B．haveherclosehereyes

C．seeifherguessiscorrect

D．askher