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Module 3 Natural elements
Quiz about water
1=.You can live without water for a few .
a. hoursb. daysc. weeks
2.When you exercise, you need water.
a. less b. more c.no
3.Water covers about of the Earth.
a.one thirdb.one halfc. two thirds
4.About of the water on Earth is ‘fresh’ or without salt.
a.3%b.10%c.20%
What do you know about water?
[fre?] 淡水的
[s??lt] 盐
[?v?lju?b(?)l ] 宝贵的；
很有用的
Where does the rain go?
2
3
4
5
How does water circulate (循环 )?
Quiz about water (page 58)
First...and... then...
next...finally...
drop into the sea
a drop of water