阅读一篇!Strange things happen to time when you travel because t

阅读一篇!
Strange things happen to time when you travel because the earth is divided into twenty-four zones（时区）,one hour apart（一个时区相差一个小时）．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（大西洋）,your ship enters a different time zone every day．As you enter each zone,the time changes one hour．Traveling west,you set your 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 Ocean（太平洋）,you cross the International Date Line（国际日期变更线）．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．
根据短文内容选择最佳答案.
1．Strange things happen to time when you travel because ______．
A．no day really has twenty-four hours
B．no one knows where time zones begin
C．the earth is divided into time zones
D．in some places one day always has twenty-five hours
2．The difference in time between zones is ______．
A．one hour
B．more than seven days
C．seven days D．twenty-four hours
3．If you travel across the Atlantic Ocean,going east,you set your clock ______．
A．one hour ahead in each time zone
B．one hour ahead for the whole trip
C．one full day back for each time zone
D．one hour back in each time zone
4．From this passage,it seems true that the Atlantic ______．
A．is in one time zones
B．is divided into twenty-four zones
C．is divided into five time zone
D．is in four time zones
5．The International Date Line is the name for ______．
A．the beginning of any new time zone
B．any point where time changes by one hour
C．the point where a new day begins
D．the end of any new time zone

1,C,第一段说,当你旅行时,时间发生奇怪的事情,因为地球被分为了24个时区
2,A,它是在问时区中有什么不同呢,第一段中说,一个时区相差一个小时,A的意思是一个小时
3,A,第二段说从大西洋往东,会超前一个小时,traveling east,you set it ahead．
4,C,题目问对于大西洋来说什么是真实的,看看原文If you make a five-day trip across the Atlantic Ocean（大西洋）,your ship enters a different time zone every day,这句话说,如果你有个横穿大西洋的五天的旅程,你的船每天都会在一个不同的时区,也就是有五个时区.答案A说在同一个时区,不对,B,说被分为24个时区,肯定也不对,D分为4个时区,当然也不对了.
5,C,原文中you cross the International Date Line（国际日期变更线）．By agreement,this is the point where a new day begins,这句话说,国际日期变更线是代表新的一天的开始.答案是原话.