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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
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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
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We need to be responsible for our environment. Being a frugal consumer(节俭的消费者) is one way to help. But, what exactly does that mean?
Use It Up
You can use things up instead of wasting them. Squeeze that last bit of toothpaste out of the tube. Use the last little piece of soap. Don't throw away any bits of the biscuit at the bottom of the box.
Wear It Out
You do not always need to have new things. Suppose your sneakers have broken laces, but they still fit you. Repair them and wear them longer. You don't have the latest iPhone until the old one doesn't work anymore. Then you can get a new one. Think twice before replacing something that still works.
Make It Do
When something you want is not on hand, look for something else that you already have to take its place. Suppose you are packing your lunch for tomorrow and want a butter sandwich. You are out of butter. Have a cheese sandwich instead so that you can use all of the cheese. Learn to fix broken toys instead of just throwing them away. With a little thought, you can make something do, instead of buying something new.
Do Without
Think about all those things that you would like to have. Do you really need them? How long will you really play with that new toy you saw on TV? Making the things that we want uses up your world's resources(资源). And, getting rid of the things we don't want any more takes up even more resources and space.
【小题1】Do we need to be responsible for our environment?
【小题2】 How do we deal with the last little piece of soap?
【小题3】When do we need to get a new iPhone?
【小题4】 What should we do when something we want is not on hand？
【小题5】What does the writer want to tell us? 查看习题详情和答案>>