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 nightB.day
C.neither day nor nightD.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 pushingB.the pullingC.the spinningD.the passing
【小题3】.At the equator day is as long as night ________.
A.sometimesB.neverC.usuallyD.always
【小题4】When the North Pole is tilted toward the sun,  the Northern Hemisphere gets ________ sunlight.
A.lessB.moreC.allD.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

The English often go out with an umbrella or a raincoat. Why? 36  the weather In Britain often changes quickly.
Spring can be rainy or windy, but the weather is  37  warmer and you can hope more sunny days. In fact , there  38  as much sunshine in spring as in summer. Summer is the  39  time for visitors to go to the seaside. People often go out to have a walk or swim. Autumn is a beautiful season. During autumn it is still nice to be outside ,too. In winter, it gets colder, and it might 40  ,especially in the north. There are  41  very heavy winds in this season.
February is usually the coldest   42 of the year , while the warmest  43 often July.
The difference   44   temperature between winter and summer is not so great in Britain. The average temperature for winter is about 4.5℃,and for   45 is about 15.5℃.
【小题1】A. Because     B. As           C. Since
【小题2】A. get         B. getting       C. gets
【小题3】A. can have     B. can         C. can be
【小题4】A. worst        B. best         C. earliest
【小题5】A. snow        B. rain         C. wind
【小题6】A. also         B. either        C. too
【小题7】A. month       B. season       C. weather 
【小题8】A. is          B. was         C. are
【小题9】A. in           B. on         C. for
【小题10】A. spring      B. autumn       C. summer

There are four seasons in most of the countries. But the weather is not always the same. In England, winter is not very cold and summer is not very hot. There is not a great __31___between summer and winter. Do you know why?
England has a warm winter and a cool summer because it is an ___32___country.In winter the sea is warmer than the land. The winds __33___the sea bring __34___air to England. In summer the sea is cooler than the land. The winds from the sea bring cool air to England. The west winds blow over England all the year around. They blow from the southwest. They are wet winds. They also bring ___35___to England. So England has ___36___rain all the year .Sometimes it rains heavily. The west of England is wetter than the east.
In Canada they have four seasons, too. But the average( 平均 )temperature is very low. Spring is usually very ___37___in most part of the country. It comes in February. People can still go skating in some places. Summer is usually very cool. Early in the morning the weather is so cold that people usually wear sweaters. Autumn comes ___38___summer. Canadians like to watch maples(枫叶) in the park or on the hills. They are really
beautiful. Winter is the__39___ season of the year. It’s often freezing cold. There is thick ice on the river or lake. Children like to go skating there. Of course, they should wear warm, thick coats, __40___they will catch a cold.

【小题1】
A.differentB.differenceC.sameD.unlike
【小题2】
A.landB.islandC.bigD.small
【小题3】
A.fromB.toC.comeD.go
【小题4】
A.hotB.coldC.warmD.cool
【小题5】
A.windB.snowC.rainD.wet
【小题6】 
A.a littleB.a fewC.a bit ofD.a lot of
【小题7】
A.warmB.hotC.coolD.cold
【小题8】
A.afterB.beforeC.withD.in
【小题9】
A.coldB.colderC.coldestD.warmest
【小题10】
A.andB.orC.butD.so

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