DoyouknowWeibo（微博）？DoyouwriteaWeibo？Ifyoudon't，youare"out"!Weibomeansmicroblog．Peoplemayspendmuchtimewritingablog，butittakesalittletimetowriteamicroblog．Why？Becauseeverymessageonamicrob

　　DoyouknowWeibo（微博）？DoyouwriteaWeibo？Ifyoudon't，youare"out"!Weibomeansmicroblog．Peoplemayspendmuchtimewritingablog，butittakesalittletimetowriteamicroblog．Why？Becauseeverymessageonamicroblogislessthan140words．

　　MicroblogstartedintheUSA．ItcametoChinain2009andithasdevelopedveryfast．In2011，thenumberofChinesemicro-bloggersgrewto300million．Nowmoreandmorepeopleareinterestedinwritingmicroblogs．（1）Formanymicroblogusers，itisagreat______oflearningthefreshestnews，talkingwithfriendsandsharingdifferentkindsof_____，includingnews，dailylife，pictures，musicandsoon．Manystarsandfamouspeoplealsowritemicroblogsandsharegoodthingswiththeirfans．

　　（2）Itiseasyandfasttosendamessageonamicroblog．However，thiscanalsoleadtoproblemsandevencausepanic （恐慌）．Forexample，whenthebigearthquakeandtsunami （海啸） hitJapaninMarch，2011，messageslike"Saltcanprotectpeoplefromradiation（辐射）"werehotonmicroblogs．Itsooncausedacrazybuyingofsalt．Laterpeoplerealizeditwasjustarumor （谣言）．

　　Inaword，microblogplaysanewroleinthelifeofChinesepeople．

　　51．在（1）句的空白处分别填入一个适当的词使句意完整、上下文通顺．___

　　52．将（2）句译成中文．___

　　53．回答问题：Whydoesittakepeoplealittletimetowriteamicroblog？___

　　54．在文中找出与In2011，Therewere300millionpeopleusingmicrobloginChina．意思相近 的句子，并将它写在答题卡上．___

　　55．在文中找出最能表达该短文主题的句子，并将它写在答题卡上．___．