1.
2.
3.
4.
- a pipe
- a reservoir
- a tap
- a water factory

2.
3.
4.
- a pipe
- a reservoir
- a tap
- a water factory
答案
1. a reservoir 2. a water factory 3. a pipe 4. a tap
a Water goes to the water factory.
b Rainwater goes to the reservoir.
c Water comes out from the tap.
d Water goes through pipes to our homes.
e The factory makes the water clean.
$□ \to □ \to □ \to □ \to □$

b Rainwater goes to the reservoir.
c Water comes out from the tap.
d Water goes through pipes to our homes.
e The factory makes the water clean.
$□ \to □ \to □ \to □ \to □$
答案
b, a, e, d, c
Think and say.
How does water get to us?
Water comes from...
People build... to...
Water goes to...
Then water comes out from...
How does water get to us?
Water comes from...
People build... to...
Water goes to...
Then water comes out from...
答案
Water comes from rivers, lakes and underground.
People build reservoirs to store water.
Water goes to water treatment plants.
Then water comes out from taps.
People build reservoirs to store water.
Water goes to water treatment plants.
Then water comes out from taps.
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