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  3. Strange things happen to time when you travel, because the earth is divided into twenty-four time zones, one hour apart. You can

Strange things happen to time when you travel, because the earth is divided into twenty-four time zones, one hour apart. You can

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问题     Strange things happen to time when you travel, because the earth is divided into twenty-four time zones, one hour apart. You can have days with more or fewer than twenty-four hours, and weeks with more or fewer than seven days.
    If you make a five-day trip across the Atlantic Ocean, your ship enters a different time zone every day. As you enter each zone, the time changes one hour. Traveling west, you set clock back; traveling east, you set it ahead. Each day of your trip has either twenty-five or twenty-three hours.
    If you travel by ship across the Pacific, you cross the International Date Line. By agreement, this is the point where a new day begins. When you cross the line, you change your calendar one full day, backward or forward. Traveling east, today becomes yesterday; traveling west, it is tomorrow.
Strange things happen to time when you travel because______.
选项 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
答案B
解析
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