资料：Singapore Airlines plans to introduce inflight mobile phone and internet access in May this year,

资料：Singapore Airlines plans to introduce inflight mobile phone and internet access in May this year,beginning with its flagship Airbus A380 fleet.Several pricing models are believed to be under consideration,beginning with a low-cost package suitable for WE—service such as Google Gmail,Yahoo and Hotmail as well as a 30MB allowance for around SGD$25 （that's $20 Russia and US,and ￡20 and ￡ 14）.The airline is polling selected members of its KrisFlyer frequent flyer loyalty program to participate in an online survey about your attitudes towards inflight mobile and internet services,which we are planning to introduce from May 2011 according to the email invitation.The survey asks travellers for their opinions on pricing packages such as SGD$25 for 30MB,as well as if mobile phone cells and SMS messages should be permitted.Should passagers be allowed to make and take calls at 30000 feet they'll pay plenty for the privilege, with calls being charged at international roaming rates.As it's up to each country to decide what those rates are-and with Singapore Airlines effectively being its own country in terms of providing a fully controlled and self-contained telecoms system on board each plane-those rates could literally be sky high.SQ's inflight internet and mobile service, which may carry the KrisNet brand in keeping with the KrisWorld inflight entertainment system, is expected to debut on the Airbus A380 before being installed onto the airline's A340-500 and Boeing 777-300ER aircraft.Passagers will be able to access the internet on any device from a smart phone to a tablet or laptop, as Singapore Airlines will support connections through both Wifi wireless networking （using a series of low-hotpots located throughout the plane） and 3G（via tiny pico-cell stations）.It will employ the pepular OnAir technology, jointly developed by IT company SITA and Airbus,and currently used by over 20 airlines（including Air New Zealand's currenttrial of in-flight internet） which feeds the Wifi and 3G signals through to Inmarsat's SwiftBroadband satellite network.According to the author,the fees for making and taking calls on planes of Singapore Airlines will be sky high,because__.
A：the telecoms system employed by Singapore Airlines on board each plane is the best of the breed
B：Singapore Airlines has a self-contained telecoms system which enables it to set high international roaming rates
C：the calls will be charged at international roaming rates which are normally high
D：it will be a privilege to a small


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