The sun can shine on only half the earth _________.
A. at one time        B. at any time　　C. at a time        D. at times

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（旋轉(zhuǎn)）of the earth. At the equator（赤道）day and night are sometimes the same length（長度）. 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（傾斜）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.
（  ）6.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
（  ）7. 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
（  ）8. At the equator day is as long as night ________.
　　        A. sometimes     B. never       C. usually        D. always
（  ）9. When the North Pole is tilted toward the sun, the Northern Hemisphere gets ________ sunlight.
　　    A. less           B. more       C. all            D. no
（  ）10. 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

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（旋轉(zhuǎn)）of the earth. At the equator（赤道）day and night are sometimes the same length（長度）. 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（傾斜）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.

（   ）6.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

（   ）7. 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

（   ）8. At the equator day is as long as night ________.

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

（   ）9. When the North Pole is tilted toward the sun, the Northern Hemisphere gets ________ sunlight.

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

（   ）10. 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

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（旋轉(zhuǎn)）of the earth. At the equator（赤道）day and night are sometimes the same length（長度）. 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（傾斜）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

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（旋轉(zhuǎn)） of the earth. At the equator（赤道） day and night are sometimes the same length. They are each twelve hours long. The sun rises at 6 in the morning and sets at 6 in the evening. For six months the North Pole is tilted（傾斜） 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 night. 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

      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 (旋轉(zhuǎn))of the earth. At the equator(赤道) day and night are sometimes of the same length(長度). They are each twelve hours long. The sun rises at 6 o’clock in the morning and sets at 6 0’clock in the evening. For six months the North Pole is tilted(傾斜) toward 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 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 form 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 as long as night        

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

4. 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

    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 the night and from night into day over and over by spinning(旋轉(zhuǎn)) of the earth. At the equator(赤道) day and night are sometimes the same length. They are each twelve hours long. The sun rises at 6 o’clock in the morning and set at 6 o’clock in the evening. For six months the North Pole is tilted(傾斜) 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.

(  )31. When the Western Hemisphere is having day, the Eastern Hemisphere is having           .

 A. both day and night B. day C. neither day or night D. night

(    )32. A place is moved from day into night and from day over and over by      of the earth.

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

(    )33. At the equator day is as long as night            .

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

(   )34. When the North Pole is tilted toward the sun, the Northern Hemisphere gets           sunlight.

 A. less B. more C. all D. no

(    )35. 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

　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（旋轉(zhuǎn)）of the earth. At the equator（赤道）day and night are sometimes the same length（長度）. 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（傾斜）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