The word“day” has two meanings. When we talk about the number of days in a year,  we are using “day” to mean 24 hours. But when we talk about day and night,  we are using“day” to mean the time between sunrise and sunset. Since the earth looks like a ball,  the sun can shine on only half of it at a time. Always one half of the earth is having day and the other half night. A place is moved from day into night and from night into day over and over by the spinning（旋转）of the earth. At the equator（赤道）day and night are sometimes the same length（长度）. They are each twelve hours long. The sun rises at 6 o’clock in the morning and sets at 6 o’clock in the evening. For six months the North Pole is tilted（倾斜）toward the sun. In those months the Northern Hemisphere（半球）gets more hours of sunlight than the Southern Hemisphere. Days are longer than nights. South of the equator nights are longer than days. For the other six months the North Pole is tilted away from the sun. Then the Southern Hemisphere gets more sunlight. Days are longer than nights. North of the equator nights are longer than days. Winter is the season of long nights. Summer is the season of long days.

1.When the Western Hemisphere is having day,  the Eastern Hemisphere is having ________.

　　A. both day and night　　　　　　　B. day

　　C. neither day nor night　　　　　　D. night

2.A place is moved from day into night and from night into day over and over by ________ of the earth.

　　A. the pushing　　B. the pulling　　 C. the spinning　　D. the passing

3.．At the equator day is as long as night ________.

　　A. sometimes　　 B. never　　　　 C. usually　　　　D. always

4.When the North Pole is tilted toward the sun,  the Northern Hemisphere gets ________ sunlight.

　　A. less　　　　　B. more　　　　 C. all　　　　　　D. no

5.．When it is winter in China,  ________.

　　A. the USA is tilted toward the sun

　　B. the South Pole is tilted away from the sun

　　C. the North Pole is tilted toward the sun

　　D. the North Pole is tilted away from the sun

Jack is a twenty-year-old young man. Two years ago, when he finished middle school, he found work in a shop. Usually he works until ten o'clock in the evening. He is very tired when he gets home. After a quick supper he goes to bed and soon falls asleep. His grandma who lives downstairs is satisfied with (满意) him.

One day, on his way home, he met Mary. They were both happy. He asked the girl to his house, she agreed happily. He bought some fruit and drinks for her. And they talked about their school, teachers, classmates and their future . They talked for a long time.

“Have a look at your watch, please,” said the girl. “What time is it now?”

　　“Sorry, something is wrong with my watch,” said Jack. “Where's yours?”

　　“I left it at home.”

　　Jack thought for a moment and found a way. He began to stamp his foot on the floor, “Bang! Bang! Bang!”

　　The sound woke his grandma up. The old woman shouted downstairs, “It's twelve o'clock in the night, Jack. Why are you still jumping upstairs?”

1.Jack was ________ when he finished middle school.

　　A. sixteen　        B. eighteen　               C. twenty　         D. fifteen

2.The old woman is satisfied with Jack because ________.

　　A. he's her grandson　　                    B. he's clever

　　C. he can keep quiet　　                    D. he gets home on time

3.From the story, we can know that Mary is Jack's ________.

　　A. classmate　　        B. colleague (同事)　　 C. aunt      　　  D. wife

4.The word “stamp” in the story means ______ in Chinese.

　　A. 盖印　　         B. 跺　　               C. 贴邮票　　   D. 承认

5.Jack stamped his foot on the floor in order (为了) ________.

　　A. to wake his grandma up

　　B. to make his grandma angry

　　C. that his grandma was going to tell him the time

D. that his grandma was going to buy him a watch