21、根據(jù)下面內(nèi)容，回答21-35題：
Los Angeles has planted 2,000 rubber trees down the middle of one of its main streets．These trees do not 21 rubber．They are,22, made of rubber．Mr．Joe Dynamo, a spokesman for Los Angeles 23 council, explained the reasons．He said:
"These 24 are representative of our virtual society．We have polystyrene grass on our golf 25．We have non-milk powder 26 our coffee．We 27 copies in plastic of old wooden furniture．We have fiberglass tombstones.28 shouldn't we have trees made of rubber?"
"At 50 miles an hour,29 motorist will see any difference．And our preservation 30 will be lower．You give the trees an annual rinse with detergent, and 31 them off twice a year．We 32 a lot of money because transplanting, pruning, weeding and leaf-collection are all 33 And we have a 60-year 34 guarantee on each plant．This is rationalization at 35 best, "
A．invent
B．do
C．produce
D．create
22、
A．in fact
B．eventually
C．practically
D．a(chǎn)s a matter
23、
A．country
B．state
C．city
D．county
24、
A．plants
B．trees
C．rubber
D．streets
25、
A．courses
B．places
C．courts
D．playground
26、
A．on
B．of
C．a(chǎn)t
D．in
27、
A．make
B．introduce
C．build
D．set
28、
A．What
B．How
C．When
D．Why
29、
A．some
B．no
C．many
D．a(chǎn) few
30、
A．costs
B．price
C．money
D．a(chǎn)ward
31、
A．sweep
B．wash
C．tidy
D．dust
32、
A．waste
B．keep
C．save
D．store
33、
A．essential
B．a(chǎn)ccidental
C．unnecessary
D．necessary
34、
A．fade
B．non-fade
C．die away
D．everlasting
35、
A．one's
B．its
C．their
D．the
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