近年来，在收入有限的年轻人中流行着“CPW”一词。CPW=P／N（P为衣物单价，N为着装次数），常被用来衡量要购买的着装衣物是否“物有所值”。在不考虑其他情况下，依据CPW概念，建议购买的衣物是 [ ]

①会连穿几季的普通衣物

②婚纱等用于特定场合的衣物

③不常穿的名贵时髦服装

④耐用常穿价格偏高的牛仔裤

A．①②

B．③④

C．①④

D．②③

(2013·高考浙江卷)There are some health problems that，when ________ in time，can become bigger ones later on.

A．not treated

B．not being treated

C．not to be treated

D．not having been treated