The word“day” has two meanings. When we talk about the number of days in a year

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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.
小题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

小题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

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

A．sometimes

B．never

C．usually

D．always

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

A．less

B．more

C．all

D．no

小题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

答案

小题1:D小题1:C小题1:A小题1:B小题1:D

解析

小题1:细节理解题，根据文中语句理解可知。当东半球是白天时，西半球是黑夜，故选D。
小题2:细节理解题，根据文中语句“A place is moved from day into night and from night into day over and over by the spinning（旋转）of the earth.”理解可知。昼夜的交替是由地球的自转造成的。选C。
小题3:细节理解题，根据文中语句“At the equator（赤道）day and night are sometimes the same length（长度）. They are each twelve hours long.”理解可知。赤道的昼夜长度有时是一致的。选A。
小题4:细节理解题，根据文中语句“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.”理解可知。当北极点对向太阳时，北极地区获得的阳光要多些。选B。
小题5:细节理解题，根据文中语句“For the other six months the North Pole is tilted away from the sun. Then the Southern Hemisphere gets more sunlight.”理解可知。当中国是冬天时，南半球倾向太阳光，北极点远离太阳，故选D.