The Train Ride－143 Years Later!

　　The year was 1839. Vice (副……) President Richard M.. Johnson was in New York City on his way to Philadelphia. He was expected(希望) at a meeting at 6:30 that evening. When did he begin his trip? At noon! In 1839, it took six and one-half hours by train and ferry(渡船) to get from New York City to Philadelphia. That wasn't so bad. In 1817, the trip took three days!

　　If this were a cold winter day, Vice President Johnson would have started much earlier. The Delaware River might freeze over. There would be no ferry and he would have had to walk across the ice.

　　Today, it's possible to leave New York City on the 9:00 a. m.train and be in Philadelphia at 10:29 a. m. In fact, some people live in New York City and work in Philadelphia. They use the train schedule(时刻表) below.

　　How do you read the train schedule? Suppose(假设) you're in New York City and you want to go to Princeton. Run your finger down the list of cities to find Princeton. Next, move your finger to the right. You will see the times that trains arrive in Princeton. Then run your finger up to the times listed across from New York. That's when the trains leave New York. Make your choice and enjoy the ride !

1．A doctor's office in Philadelphia opens at 9:00 a. m. What time must the doctor leave New York City to get there on time?

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2．Suppose Vice President Johnson rode today's trains. What time would he have to leave New York to be in Philadelphia by 1:30 p. m. ?

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3．You board the train in Newark at 8:13. When do you arrive in Trenton?

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4．Which is the fastest train to Philadelphia?

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5．Which two trains make the most stops?

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