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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. Travelling west, you set your clock back, travelling 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, you cross the inter-national date line. By agreement, this is the point where a new day begins. When you cross the line, you change your calendar（日历） one full day, backward or forward. Travelling east, today becomes yesterday,travelling west, it is tomorrow.
根据短文内容，选择最恰当的答案。
1. Strange things happen to time when you travel because______.
[ ]
A. one day has twenty-four hours
B. no one knows where time zones begin
C. the earth is divided into time zones
D. how time flies
2. The difference in time between zones is ______.
[ ]
A. one hour
B. more than seven days
C. seven days
D. one day
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 zone
B. is divided into twenty-four zones
C. is divided into five time zones
D. is divided into seven 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 point between two different zones
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On the way to schoolJack: Hello, John.
John: Hello, Jack. Are you at No. 2 Middle School?
Jack: No. I'm at No. 5 Middle School. Are you at No. 3 Middle School?
John: Yes, I am. What's your father?
Jack: He's a teacher. He teaches math at No. 4 Middle School. How old is your father?
John: He's forty-three. How old is your father?
Jack: He's thirty-three. Good-bye.
John: Good-bye.
根据短文内容，选择最恰当的答案。
1. Jack is at No. ______ Middle School.
[ ]
A. 2 B. 3 C. 5 D. 4
2. Jack's father is ______ years old.
[ ]
A. 43 B. 13 C. 33 D. 34
3. John's father is ______ years old.
[ ]
A. 43 B. 33 C. 34 D. 13
4. Jack's father is a ______.
[ ]
A. worker B. teacher C. doctor D. driver
5. John's father is ______ years older than Jack's father.
[ ]
A. 10 B. 11 C. 12 D. 9
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So he invented a very simple camera. He put it in a window of his house and took a picture of his garden.
That was the first photo.
The next important date in the history of photography (摄影术) was in 1837. That year, Daguere,
another Frenchman, took a picture of his reading room. He used a new kind of camera in a different way.
In his picture you could see everything very clearly, even the smallest thing. This kind of photo was called
a Daguerreotype.
Soon, other people began to use Daguere's way. Travelers brought back wonderful photos from all
around the world. People took pictures of famous buildings, cities and mountains.
In about 1840, photography was developed. Then photographers could take pictures of people and
moving things. That was not simple. The photographers had to carry a lot of film and other machines. But
this did not stop them, for example, some in the United States worked so hard.
Mathew Brady was a famous American photographer. He took many pictures of great people. These
pictures were unusual because they were very lifelike (栩栩如生的).
Photography also became one kind of art by the end of the 19th century.Some photos were not just
copies of the real world. They showed feelings like other kinds of art.
B. his garden
C. his window
B. a kind of camera
C. a photographer
B. buy an expensive camera
C. take lots of film and something else with him
B. was famous for his unusual pictures
C. took many pictures of moving people
B. how to take pictures in the world
C. how to use different cameras