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Flowers and trees need me.
People need to drink me.
I'm valuable.
Who am I? Who am I?
valuable、useful、important...
Try the short quiz and show the card.
（3big groups. All correct 2 points)
A: Red
B: Blue
C: White
Short quiz about water
1.You can live without water for a few .
a. hours b. daysc. weeks
2.When you exercise, you need water.
a. more b. less c.no
3.Water covers（覆盖） about of the Earth.
a.one third b.one half c. two thirds
4.About of the water on Earth is ''fresh''
or without salt（盐）.
a.3% b.10% c.20%
A：Look at the picture below and put the following
sentences in the correct order. P58
Before reading
2
4
3
5
Do you know where the water comes from?
Water comes from...
water cycle(水循环）