The mobile phone was _____for at least five years against the bug, but it was wrong only one year later. [ ]A. ensured B. guaranteedC. protected D. promised-高中英语-n多题

◎ 题干

The mobile phone was _____ for at least five years against the bug, but it was wrong only one year later.

A. ensured
B. guaranteed
C. protected
D. promised

◎ 答案

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◎ 解析

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◎ 知识点

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◎ 相似题

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