这该死的答案怎么回事

Amazon Introduces a Digital Music Locker Amazon, corn plans to introduce a service that will let people upload their digital music to the Web． 71 The service, known as a music locker, was made available to Amazon account holders early Tuesday．Amazon will offer a Web-based hard drive backup service called Cloud Drive, where people can store documents, photos, videos and music． It will also offer Cloud Player, which will let people listen to, download and make play lists from the music they store on Cloud Drive from any Web site or from an app on Android devices． Cloud Player will automatically upload songs bought on Amazon． 72 73 One key difference is that Google and Apple reportedly want to automatically make all the music that a user owns available to stream on other instruments, while Amazon will require that people upload music, except songs they buy on Amazon, to access it elsewhere． The dream of these companies, along with many start-ups, is for people to be able to listen to their music from any computer or phone． 74 Several experts in digital music say that the music locker business is still legally ambiguous． 75 Amazon says it has avoided the problem, because its users would upload their songs, inMP3 or A． A． C．format, to the cloud-based service, just like backing them up on an external （outside） hard drive or a Web-based computer backup service． Companies, including Google and Spotify have been forced to delay introducing certain services while they negotiate with the music labels and publishers． A．People can access it from any computer and from Android phones． B．But they have all run into the same problem: music companies and publishers would prefer that listeners buy a new copy of a song everywhere they want to listen to it． C．Experts suspect that Amazon seems to be copying what Google and Apple have already achieved． D．They agreed to speak on the condition of anonymity （匿名） because their agreements with Amazon are confidential． E．It is impossible for Web companies to tell whether a song was bought legally or downloaded illegally． F．Amazon is racing Google and Apple, both of which are interested in offering similar services． G．It will also scan iTunes or Windows libraries to find other music to upload． 啊AGFBE 这该死的答案怎么回事。。我的思路是ABCGF

解题思路： 阅读理解，逻辑关系
解题过程：
你好，答疑如下
72，G 根据段落逻辑关系上一句 Cloud Player will automatically upload songs bought on Amazon．答案选G It will also scan iTunes or Windows libraries to find other music to upload．两句话中共同关键词： Cloud Player =it；和upload，且后句中also表明并列关系。
73，F 根据下文连词while对比作用，阐明 Google and Apple 两大竞争对手的特点，则上一句必须先导入主题句，且含有Google and Apple的名字。
74，B 根据上下逻辑，上句： Google and Apple 等公司可以让听众免费听歌，而music companies and publishers 却希望听众购买，这与下一句中legally ambiguous相印证。
75，E 根据下文例证Amazon利用听众上传，下载收听避免了这种问题，注意problem前的the作用，表明上文必须交代。那么该问题就是E中 whether a song was bought legally or downloaded illegally 避免了法律上的责任问题。
仅供参考，愿你满意。异议来信。
最终答案：略