4.
阅读理解
The sun is very bright (明亮的). Light (光) from the sun helps us see
things. Its light also makes our green grass and trees grow.
The sun is very hot. It makes air warm. Then
we are warm. When the day is over, the sun goes down (落下). It is night. But the next day the sun comes up (升起). It is bright again. A new day begins.