33.Braille, ________by a Frenchman, is a language ________for the blind.(P21)
A.discovered; designed B.created; meaning
C.invented; meant D.produced; intended
32.Language, in a ________sense, is the way information is expressed.(P21)
A.wide B.long C.deep D.broad
31.______this compass works_______a mystery.(P19)
A.Why; is B.How;still C.Whether;known as D.How;remains
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30.During both World I and II, pigeons were employed by armies ________messages to and from the front line, ________the lives of many soldiers and even helping win some important victories.(P19)
A.to carry; saving B.carrying;to save C.carrying; saving D.to carry;to save
29.However, it was in war________they found the greatest use of pigeons.(P19)
A.where B.in which C.that D.what
28.Instead, pigeons have been known________home from as far away 1,800 kilometers, ________ is________pigeons have been used since ancient times.(P19)
A.which,for which B.what;why C.that;for which D.which;why
27.Though it may seem hard________, the bird the officer uses is the same bird often _______in public parks---the pigeon.(P19)
A.to be believed;seeing B.to believe;seen
C.believing;being seen D.believed;seen
26.________the message to its leg, he sets the bird________,which immediately flies into the air and disappears in the dark.(P19)
A.Attaching;loose B.To attach;loosely
C.Attached;loose D.Having attached;loosely
25.He rolls up the paper and puts it into a small case, and then________into a case and ________a bird.(P19)
A.reaching; getting B.reaches; getting C.reaching; gets D.reaches; gets
24.Don’t be frightened by sharks:you are 30 times more________to be hit by lightning than________attracted by a shark.(P18)
A.possible;be B.probable;to be C.likely; be D.maybe;to be
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