What would be the best title for this passage、-最需题库

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1How does tobacco protect itself against an attack from a caterpillar、
A.Its leaves fight against the attack by physical means.
B.Its roots send a messenger to discourage the caterpillar.
C.Its roots increase the production of nicotine when it is attacke
D.D.Its leaves produce poisonous sand to drive the caterpillar away.
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2To defend themselves ,oak trees use .
A.chemical means
B.physical means
C.bitter chemicals
D.sandy materials
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3The holly plant has more spines on the lower leaves because most animals .
A.are not tall enough
B.like the lower leaves only
C.are not clever enough
D.can get the lower leaves easily
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4This passage mainly tells readers ___________.
A.what happens on the opening day of the Sahara Festival
B.how people celebrate during the three-day Sahara Festival
C.what takes place at the closing ceremonies of the Sahara Festival
D.how animals race on the first and the last days of the Sahara Festival
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5The underlined word “finale” in the fourth paragraph most probably means the of the opening day.
A.first part
B.middle
C.last part
D.whole
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6From the fourth paragraph ,we can infer that .
A.a great many nuclear weapons were actually used for war
B.a large number of nuclear weapons should have been used for war
C.the author is doubtful about the ruin of human beings by nuclear weapons
D.the author is anxious about the huge number of nuclear weapons on the earth
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7The underlined word “mingled” in the last paragraph most probably means .
A.simple
B.mixed
C.sad
D.happy
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8What do you think the author is most likely to suggest if he continues to write、
A.Further application of science to war.
B.More reading of William Shakespeare.
C.Proper use of science in the new century.
D.Effective ways to separate the good from the ill.
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