题目内容：
阅读文章，回答题BToplistsarelecturingpeopleoneverythingfrom"100bookstoread".Aren'tyoujusttiredofbeingtoldwhattodowithyourtime?
Nowyouhavealisttoendalllists!
Takealookatthefollowingtwoexamplesfromthelistof"101thingsnottodo":
SwimwithDolphins（海豚）？
Swimmingwithdolphinsisoneoftheworld’smostprofitabletouristactivities.However,everydolphinwillwelcomehavingtheirbusy,tiringdayinterruptedbytouristsscreamingpushingaroundtheminthewater.Worseyet,whendolphinsgettooneartotheboatsloadedtourists,theycouldgetcaughtupinropesandkilledbypropellers(螺旋桨).
Here’salittlesecret.Dolphinslooklikesmilingatyou,butactuallythey’rejustopeningmouths.
GotoSeetheMonaLisa?
Theremustbesomethingaboutthemysterious(神秘的)smile.The6millionpeoplewhotheladyintheLouvreeveryyearcan’tallbewrong,afterall.Buttheycanbequiteannostandinginfrontofyou,holdinguptheircamerastopreventyoufromseeinganything.Infacthardforyoutoseethepaintingclearlybecauseyouhavetostayawayfromitforsecurityread.Afterqueuingforhours,manytouristscanremaininfrontofthepaintingonlyfor15secormost.
Ifthemysteriousladyinthepictureknewherfate,shewouldn’tjustbesmiling,shelaughing.
So,stilllongtoseetheMonaLisa?Ifyouwanttofindoutmoreaboutthelist,read101TingsNOTtoDoBeforeYouDie.Visitwww.not2dobeforeidie.co.ukandbuythebookata20%disc.Accordingtothepassage,swimmingwithdolphins________. A．istheworld’smostpopulartouristactivity
B．givesfuntobothtouristsanddolphins
C．willmaketouristsbusyandtired
D．cancausedangertodolphins
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