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【单选题】
What is the main idea of the passage?A.
One should be strong-minded enough to ignore a phone call.
B.
A telephone is a necessity or a nuisance.
C.
Important message will reach you sooner or later.
D.
One had better answer the phone call.
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【单选题】It is thought to be a wise way to have some money _____ for old age.
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