Before 1883,most cities in the United States had their own time.They set their time by the sun.This made many problems for the railroad companies.Their trains went to more than 300 different cities.Every city had a different time.In 1883 Willia Allan made a plan to divide the United States into four different parts called time zones.This made things easier for the railroad companies.Now every city in the same time zone has the same time.The map shows the time zones.They are Pacific (太平洋的) Standard Time (PST),Mountains Standard Time (MST),Central Standard Time (CST) and Eastern Standard Time (EST).The clocks below the map tell the time in each zone.L=Los Angeles N=New York W=Washington
1.Before 1883,Now York and Washington had and now they .
different times...still have different times
different times...have the same times
the same time...still have the same time
the same time...have different times
2.It's now five thirty in New York.What time is it in Los Angeles?
3:30.8:30.2:30.1:30.
3.It's now 2:30 Sept.1st in Los Angeles.You take a train to New York.In twenty hours you will get there.What's time and date in New York then?
22:30 Sept.1st.1:30 Sept.2nd.19:30 Sept.1st.2:30 Sept.2nd
4.Which of the following shows the correct positions of the four time zones?
PST MST CST EST EST CST MST PST CST EST PST MST PST CST MST EST