2012年成人高考《数学(理工农医类)高起点》冲刺试卷(8)
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11、
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12、
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A. 2
B. 1
C.
D.
13、
A. 1-i
B. 1+i
C. -l+i
D. -1-i
14、 有4名男生和2名女生,从中随机抽取三名学生参加某项活动,其中既有男生又有女生的概率是( )
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15、 设函数f(x)=logax,且f(4)=2,则下列各式成立的是
A. f(3)<O
B.
C. f(5)<f(3)
D. f(3)<f(5)
16、 设e1,e2是两个不共线的向量,则向量m=-e1+ke2(k∈R)与向量n=e2-2e1共线的充要条件是( )
A. k=0
B.
C. k=2
D. k=1
17、
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A. (-5,0),(5,0)
B. (0,-5),(0,5)
C.
D.
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12、
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A. 2
B. 1
C.
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D.
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13、
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A. 1-i
B. 1+i
C. -l+i
D. -1-i
14、 有4名男生和2名女生,从中随机抽取三名学生参加某项活动,其中既有男生又有女生的概率是( )

15、 设函数f(x)=logax,且f(4)=2,则下列各式成立的是
A. f(3)<O
B.

C. f(5)<f(3)
D. f(3)<f(5)
16、 设e1,e2是两个不共线的向量,则向量m=-e1+ke2(k∈R)与向量n=e2-2e1共线的充要条件是( )
A. k=0
B.
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C. k=2
D. k=1
17、
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A. (-5,0),(5,0)
B. (0,-5),(0,5)
C.
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D.
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