内容正文:
Unit9 Day and night
一、选择题
( )1. What is the title of the unit?
a) Seasons
b) Day and Night
c) Weather
d) Tim
( )2. What causes day and night?
a) The rotation of the Earth
b) The movement of clouds
c) The orbit of the Moon
d) The change in temperature
( )3. When does day begin?
a) Sunrise
b) Noon
c) Sunset
d) Midnight
( )4. What happens during the day?
a) The sky turns dark
b) The Moon is visible
c) The Sun is visible
d) The stars shine brightly
( )5. What happens during the night?
a) The Sun rises
b) The Moon sets
c) The sky turns bright
d) The stars appear in the sky
( )6. What is the opposite of "day"?
a) Morning
b) Noon
c) Night
d) Evening
( )7. What is the main source of light during the day?
a) Moonlight
b) Starlight
c) Sunlight
d) Lamplight
( )8. What do we call the time when the Sun disappears below the horizon?
a) Sunrise
b) Sunset
c) Noon
d) Midnight
二、填空题。
9. Day and night are caused by the rotation of the( ).
10. Day begins at( ).
11. During the night, we can see the ( ) in the sky.
12. The main source of light during the day is the ( ).
13. Night begins at( ).
14. The time when the Sun disappears below the horizon is called ( ).
三、选出单词不同类的一项。
( )15. a) Sun
b) Moon
c) Cloud
d) Star
( )16. a) Sunrise
b) Sunset
c) Morning
d) Noon
( )17. a) Day
b) Night
c) Sunrise
d) Evening
( )18. a) Bright
b) Dark
c) Cloudy
d) Sunny
( )19. a) Noon
b) Midnight
c) Sunset
d) Lunch
( )20. a) Sky
b) Earth
c) Moon
d) Sun
四、阅读理解。
Day and night are caused by the rotation of the Earth. When one side of the Earth faces the Sun, it experiences daylight, while the other side faces away from the Sun and experiences darkness. This cycle repeats as the Earth rotates on its axis. During the day, the Sun provides light and warmth, making it possible for plants to grow and for animals to be active. At ni