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    Strange things happen when you travel, because the earth is divided into twenty-four zones. The time difference between two zones is one hour. You can have days with more than twenty-four hours and days with fewer than twenty- four hours. You can have weeks with more than seven days and weeks with fewer than seven days.
    If you make a five-trip across the Atlantic Ocean , your ship come into a different time zone every day. As you come into each zone, the time changes one hour. If you travel west, you set your watch back. If you travel east, you set it ahead. Each day of your trip has either twenty-five or twenty-three hours.
    If you make a trip by ship across the Pacific Ocean , you cross the International Date Line. This is the point where a new day begins when you cross the line, you change one full day. If you travel east, today becomes yesterday, if you travel west it is tomorrow.
    小题1:Something interesting will happen to the time if you travel because        .
    A．a day has always fewer than twenty-four hours
    B．a day has always more than twenty- four hours
    C．a day has more or fewer than twenty-four hours,
    D．some time zones are large and some time zones are small
    小题2:The time difference between two time zones is         .
    A．twenty-four hoursB．one hour
    C．two hoursD．twenty-three hours
    小题3:If we cross the Atlantic Ocean, we         .
    A．change one full dayB．set our watch back
    C．set our watch aheadD．set our watch back or ahead
    小题4:If we travel east across the International Date Line on July 5th, the date becomes July       .
    A．3rdB．4thC．5thD．6th
    小题5:Which of the following sentences is true?
    A． If we travel around the world, we will get into trouble in telling the time.
    B．If we travel west across the Atlantic Ocean, we will have twenty-three hours.
    C． If we travel by ship across the Atlantic Ocean, we will cross the International Date Line.
    D． If we travel across the Pacific Ocean, today becomes tomorrow.

    小题1:C
    小题2:B
    小题3:D
    小题4:B
    小题5:A
    文章讲述的是时区的问题。
    小题1:细节题。根据第一段You can have days with more than twenty-four hours and days with fewer than twenty- four hours.可知C正确。
    小题2:细节题。根据第一段第2句The time difference between two zones is one hour.可知B正确。
    小题3:推理题。根据文章第2段2,3行As you come into each zone, the time changes one hour. If you travel west, you set your watch back. If you travel east, you set it ahead.本题并没有说明是向西还是向东，可知D正确。
    小题4:推理题。根据文章最后一句话If you travel east, today becomes yesterday, if you travel west it is tomorrow.可知向东，是要延后一天，故5号就变成了4号，B正确。
    小题5:文章讲述的正是世界时区的问题，因为世界被分为不同的时区，进入不同的时区，时间也会随之改变。故A正确。
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