【单选题】
A <{p}>Because people can’t resist the temptations of new gadgets.<{br/}><{/p}>
B <{p}>Because cell phones usually have a service life of 18 months.<{br/}><{/p}>
C <{p}>Because people want their cell phones to be in perfert condition.<{br/}><{/p}>
D <{p}>Because people want to update the functions of their cell phones.<{br/}><{/p}>
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