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【简答题】
2008年SCI收录文章中，美国占32.17%，则我国约占（ ）。
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举一反三
【单选题】We know from the last paragraph that______.
A.
people in the north are more obsessed with tidiness
B.
where there are less human beings, there are more birds
C.
cultural difference is not clear from south to north in England
D.
people in the south enjoy decorating their gardens with green plants
【单选题】. The top leaders of the two states are holding a meeting in a friendly _______.
A.
atmosphere
B.
condition
C.
position
D.
situation
【简答题】If the B/L states that the goods were shipped“ in apparent good order and condition” then any damage must have occurred（ ）．
【简答题】已知A=x 3 -2x 2 +1，B=-3x 3 -4x 2 +2． 求：3A-B．
【单选题】When we encounter more difficulties, we should be more spirited, and we should be more courageous______.
A.
the more danger we are in
B.
the more in danger we are
C.
we are in more danger
D.
we are in danger more
【简答题】已知A=3x 2 +2x，B=x 2 ﹣3x+1，求A﹣3B．
【简答题】已知A=-x 3 +2x 2 -1，B=3x 3 +4x 2 -2，求2A-B。
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