If you make a five-day trip across the Atlantic Ocean (大西洋), your ship comes 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 (太平洋), you across 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. The time difference between two time zones is ___________.

A. twenty-four hours　　　　 　B. one hour

C. two hours　　　　　 D. twenty-three hours

( ) 2. If we cross the 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

( ) 3. If we travel east across the International Date Line on July 5th, the date becomes July _________________.

A. 3rd　　　B. 4th　　　C. 5th　　　D. 6th

( ) 4. 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

( ) 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.

3

阅读表格内容，根据所提供的信息，选择最佳答案。

Route Flight Day Leaving Arriving

Shanghai --- New York F012

F008

F019 Monday

Tuesday

Thursday 10:45

07:10

08:15 23:45

23:30

01:40

Shanghai --- London

F012 Except Sunday and Thursday
 

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