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21.The doctors _______ the medicines to the people in the flood area.
A. distributed
B.packed
C.prayed
D.undertook
22.Much of the news provided by this newspaper is _______, not foreign.
A. domestic
B.strain
C.purchase
D.murder
23.He tried to _______relations with his former wife but he failed.
A. measure
B.maintain
C.shelter
D.reply
24.He _______ to study harder in the future so that he could have more opportunities to find a better job.
A. resolved
B.resorted
C.requested
D.reserved
25.The _______ work continued for more than a week but there was still no sign of the missing boy.
A. research
B.rescue
C.vessel
D.vast
26.Many kinds of animals are believed to have _________ from the earth
A. withdrawn
B.vanished
C.found
D.hung
27.The engineers in this lab spent several weeks _______ their plans for the new bicycle.
A. counting
B.stripping
C.elaborating
D.casting
28.Pine trees are usually believed to _______ cold weather.
A. guard
B.accomplish
C.roar
D.endure
29.Free medical service is _______ to nearly all the college students in China.
A. favorite
B.available
C.convenient
D.average
30.After working for twenty hours without any rest, the doctors were _______.
A. exhausted
B.mounted
C.wrapped
D.restored
