单项选择题

Strange things happen to time when you travel because（）

A．no day really has twenty-four hours
B．the earth is divided into time zones
C．time zones are not all the same size
D．no one knows where time zones begin

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热门试题

单项选择题

Before liberation，the laboring people worked hard only to live a poor life（）

A．解放前，劳动人民艰苦劳动，结果只能过贫苦生活。
B．解放前，劳动人民工作努力，但还是过贫苦生活。
C．解放前，穷人拼命劳动，结果生活还是困难。
D．解放前，工人们艰难挣扎只为摆脱贫困生活。

单项选择题

If you cross the ocean going east, you set your clock（）

A．ahead one hour in each new time zone
B．ahead one hour for the whole trip
C．back one full day for each time zone
D．ahead by twenty-three hour