第一部分：阅读理解 (共两节，满分30分)
第一节 (共10小题；每小题2分，满分20分)
阅读下列短文，从每题所给的四个选项 (A．B．C和D)中，选出最佳选项，并在答题卡上将该项涂黑。
A
With smart phones taking the world by storm, a phone that can only send and receive voice calls and text messages may seem like a relic from a past age. Yet in East Africa, simple phones like these are changing the face of the economy, thanks to the “mobile money” services that are spreading across the area. These services allow people without a bank account (账户) or credit card to use their phone as an electronic wallet that can be used to store, send or receive cash (现金)．
