Question

Strange things happen when you travel, because the earth is divided into twenty-four zones （时区）．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-day trip （旅行） across the Atlantic Ocean （大西洋） , 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 （向前）．Each day of your trip has either twenty-five or twenty-three hours．

If you make a trip by ship across the Pacific Ocean （太平洋） , you cross the International Date Line（国际日期变更线）．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．

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 f ewer than twenty-four hours

D．some time zones are large and some time zones are small

2.The time difference between two time zones is_______．

A．twenty-four hours         B．one hour

C．two hours          D．twenty-three hours

3.If we crossthe Atlantic Ocean, we_______．

A．change one full day

B．set our watch back

C．set our watch ahead

D．set our watch back or ahead

4.If we travel east across the International Date Line on July 5th, the date becomes July______．

A．3rd       B．4th        C．5th         D．6th

5.The Atlantic Ocean________．

A．is in one time zone

B．is divided into twenty-four zones

C．is divided into five time zones

D．can not be crossed in five days

Answer

1.C

2.B

3.D

4.B

5.C

【解析】

试题分析：这篇短文主要介绍了地理方面的知识。文章介绍，地球上共划分了二十四个时区，两个相邻的时区之间时间正好相差一个小时。因此，我们环球旅行时，就会遇到时差问题。国际日期变更线是新的一天开始的地方。穿越这条线向东去，今天就变成了昨天，向西去，今天就成了明天。

1.C细节理解题。根据短文第一段的描述可知，导致这种奇怪现象的原因就是因为时区的划分，一天可能大于24小时或不足24小时。结合选项可知应选C。

2.B细节理解题。根据短文 “The time difference between two zones is one hour．”的描述可知，相邻两个时区之间的时间差为一个小时。结合选项可知应选B。

3.D细节理解题。根据短文第二段“ If you make a five-day trip （旅行） across the Atlantic Ocean （大西洋） , 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 （向前）.”的描述可知，如果横跨大西洋，时间应该往前或往后拨。结合选项可知应选D。

4.B细节理解题。根据短文第三段的描述可知，如果往东横跨国际日期变更线，今天的日期就是前一天。结合选项可知应选B。

5.C细节理解题。根据短文 “If you make a five-day trip （旅行） across the Atlantic Ocean （大西洋） , your ship come into a different time zone every day．”的描述可知，大西洋被划分为五个时区。结合选项可知应选 C。

考点：科普类短文阅读。