Question

     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 again by the spinning (自 转) of the earth. At the equator day and night are sometimes of the same length (长度) .They are both 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) towards the sun. In those months the Northern Hemisphere gets more hours of sunlight than the Southern Hemisphere. Days are longer than nights. In 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. In 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 again 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 towards the sun,the Northern Hemisphere gets sunlight.

   A. less   B. more

   C. all   D. no

5. When it is winter in China, .

   A. the US is tilted towards the sun

   B. the South Pole is tilted away from the sun

   C. the North Pole is tilted towards the sun

   D. the North Pole is tilted away from the sun

Answer 1

1. D 2. C 3. A 4. B 5. D

导读白昼与黑夜不停地交替，你知道其中的奥妙吗？

详析

1. D细节理解题。根据文章第五句可知D项为正确答案。

2. C细节理解题。从第六句可直接找到答案。

3. A细节理解题。从第七句可直接找到答案。

4. B细节理解题。从文章第十和第十一句可直接找到答案。

5. D推理判断题。从文章的最后几句可推出，中国在北半球，离北极近，当中国是冬天的时候，也就是北极偏离太阳的时候。故选项D符合题意。

equator n.赤道 hemisphere 半球

障碍句分析

A place is moved from day into night and from night into day over and over again by the spinning of the earth.由于地球自转，一个地方的白昼和黑夜不停地交替。

by在句中表示“通过……方式、途径”。