Imagine，oneday，gettingoutofbedinBeijingandbeingatyourofficeinShanghaiinonlyacoupleofhours，andthen，afterafulldayofwork，goingbackhometoBeijingandhavingdinnerthere．Soundsunusual，doesn'tit？Butit'snott

葛人飞回答：

　　28．B．细节理解题．根据文章倒数第二段Forothercountries，therailwaynetworkwilldefinitelycreatemoreopportunitiesforbusiness，tourismandsoon，nottomentionthebettercommunicationamongthosecountries．说明中国和有关的国家都可以从中获益，故B正确．29．C．细节理解题．根据文章倒数第四段Butthekeyissueisreallymoney．Chinaisalreadyspendinghundredsofbillionsofyuanondomesticrailwayexpansion．说明最大的问题是钱，故C正确．

　　30．D．推理判断题．根据文章最后三行Weforeseethatinthecomingdecades，millionsofpeoplewillmigratetothewesternregions，wherethelandisemptyandresourcesunused．Withhigh-speedtrains，peoplewillsetupfactoriesandbusinesscentersinthewestonceandfora11．Andthey'11tradewithCentralAsianandEasternEuropeancountries．说明作者认为高铁将会给中国带来很多的好处，他对高铁的前景是很乐观的，故D正确．

　　31．B．主旨大意题．文章讲述的是中国正在大力发展的高铁网络，以及高铁对中国以及相关国家带来的好处，故B正确．