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【单选题】
某种材料的密实度为D，空隙率为P，则( )。A.
D+P=1
B.
D+P＜1
C.
D+P＞1
D.
D＞P
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举一反三
【简答题】However, in many cases, taking this cooperative approach to resolving differences works effectively. (Para.5)
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A.
many; many
B.
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C.
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D.
some; many
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A.
emphasize
B.
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A.
much, much
B.
much, many
C.
many, much
D.
many, many
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【简答题】Many a man and many a woman think life is meaningless . A B C D
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