欧美国家主流的视频网站包括。（） A: YouTube B: Youku C: Hulu D: Netfix

ThesecondpartoftheInternetisthe"pipes"thatcarrydata,video,e-mailmessages,andtextfromcompaniessuchasGoogle,Hulu,Yahoo!,andTwitter,themillionsofwebsitesthatmakeupInternetcontentandservices,tocustomers.Someofthese"pipe"providers,specificallytelecomandcablecompanies,arealreadycomplainingthattheamountofdatathattheyhavetomoveisrisingtoorapidlyforthemtoaccommodate.Videofiles,whichareparticularlylarge,haveposedsignificantproblemstocablecompaniesandtheyhaveaskedWashingtontobeabletochargemoreforcustomerswhousetheInternettotransferlargefiles.Sofar,thegovernmenthasturnedthoserequestsdown. A: e-mailmessages. B: video. C: textfromcompanies. D: cablecompanies.