TheLibrary of Congress in Washington D. C., which houses the largest collection ofbooks in the world, is
fightinga battle against paper deterioration. The pages
 

67. A)seldom
B)rarely
C) never
D) sometimes
68.
A) rubbed
B)seized
C) touched
D) scratched
69.
A) acidic
B) printing
C) cotton
D) raw
70. A)was used to
B) hasbeen used to
C) has been used for
D) used to
71. A) contributed
B) added
C) led
D) pointed
72.
A) very
B) much
C) most
D) incredibly
73. A) among
B) in
C) with
D) on
74.
A) of
B) in
C) from
D) by
75.
A) low
B) sufficient
C) plenty
D) rare
76. A) pressed
B ) deteriorated
C) finished
D) printed
77.
A) circumstances
B ) conditions
C) environment
D) shape
78.
A) literacy
B ) poverty
C) books
D) famine
79.
A) numerous
B ) countless
C) plentiful
D) sufficient
80.
A) handled
B ) dealt
C) treated
D) soaked
81.
A) which
B ) that
C) what
D) where
82.
A) worry
B ) anxiety
C) concem
D) stress
83. A) experience
B)finding
C)search
D)research
84. A)invented
B)innovated
C)developed
D) researched
85. A)there
B) it
c) they
D) that
86. A)technologies
B)facilities
C)innovations
D) materials

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