题目内容：
第42题答案是 _____
A．Although it may seem that everyone owns a smart phone these days, B．if Apple offers a less expensive model of the iPhone later this year,
C．If it works, why switch?
D．who purchased a new mobile phone in the last three months,
E．The smart phone race is still raging.
F．The same theory can be applied to customers who are making the switch to smart phones today.
G．iPhone is too expensive for most people．
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答案解析：