文档介绍：滨海新区一模
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21 ——Who’s girl on the left? ——This is Betty. She is lovely girl. Many people like her.
a, an B. a , omes from homes, 38 , hospitals and so
on. It is produ ced by different kinds of activities, including washing the machines, taking showers and using the kitchen. The rain also 39 wastewater when it is running down the street during a storm. No matter where it comes from, this kind of water is sure to have 40 harmful in it.
41 must we treat （处理）wastewater? Wastewater has a big influence on our life. It causes both
illness for us and pollution for the environment. We must care for our environment and our own 42 .
How can we treat wastewater? Different kinds of wastewater need different ways of treatment.
Wastewater 43 homes can be reused. Then there will be 44 wastewater. Also, factory
wastewater has to be cleaned 45
it goes back to nature.
36. A. drink
B. save
C. carry
D. watch
37. A. easy
B. popular
C. small
D. serious
38. A. factories
B. lakes
C. rivers
D. seas
39. A. gets back
B. hands in
C. changes into
D. picks up
40. A. nothing
B. something
C. nobody
D. somebody
41. A. What
B. Who
C. Why
D. How
42. A. work
B. interest
C. health
D. business
43. A. on
B. for
C. with
D. from
44, A. less
B. more
C. better
D. worse
45. A. and
B. whether
C. after
D. before
A
Mr. Smith is fifty years old .He began to te