摘要: half+ a / an / the +n. 半个-- half a year 半年 half an hour 半小时 half an apple 半个苹果

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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 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

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The following are four kinds of medicine at home. We should know and remember how to use them.
I. Take the medicine with water. One or two pills (片) every eight hours. Don’t take more than six pills in 24 hours. For children under six, go to ask the doctor.
II. Three times a day and one pill a time. One pill before breakfast, one before 11:00 and one before sleep. Not for children under six and persons with stomachache.
III. The medicine is for a person with a toothache. Two pills a time a day before sleep for adults (成人). Half (一半) a pill for children under 12.
IV. Take the medicine four times a day. Four pills a time for adults with a cold. Two pills a time for children under 10. Take the medicine before each meal and before sleep.

  1. 1.

    Which medicine is for people with a toothache?

    1. A.
      I               
    2. B.
      II            
    3. C.
      III  
  2. 2.

    People with a ___ should not take medicine II.

    1. A.
      toothache      
    2. B.
      cold        
    3. C.
      stomachache
  3. 3.

    Medicine I should not be taken more than 6 pills in _____________.

    1. A.
      6 hours            
    2. B.
      8 hours      
    3. C.
      24 hours      
  4. 4.

    If a girl is 7 years old, she should take ___ pills of medicine IV a day.

    1. A.
      5                  
    2. B.
      8           
    3. C.
      10
  5. 5.

    Which of the following is TRUE?

    1. A.
      None of them are good for children under 6.
    2. B.
      Three kinds of the medicine should be taken 3 times a day.
    3. C.
      Three kinds of the medicine should be taken before sleep.     
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