1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
A.a A.?4?
2024年单招考试训练试题(一)
1.已知集合A??1,4?,B??2,3,4?,则A?B?( )
B.?1,4?
C.?3?
D.?1,2,3,4?
2.已知集合A??a,b,c?,下列可以作为集合A的子集的是( )
B.?a,c?
C.?a,e?
D.?a,b,c,d?
3.已知集合A?{0,1,2},B?{?1,0,1},则AB?( )
A.{0,1}
B. {?1,0,1,2}
C. {0}
D. {2}
4.设全集U?{?2,?1,0,1,2},集合A?{?1,1,2},则UA为( ) A.? B.??1,1,2? C. {?2,0}
D.{?2,?1,0,1,2}
5.设全集U=?1,2,3,4,5,6,7,8?,M=?2,3,4,6?,N=?1,4,5?,则?CUM?N等于
( )
?1,2,4,5,7? B.?1,4,5? A. C.?1,5? D.?1,4?
6.命题p:?x0?(0,??),x2?x0?2则?p是( )
A. ?x0?(0,??),x02?x0?2 C. ?x0?(0,??),x02?x0?2
B.?x0?(0,??),x2?x?2 D. ?x0?(0,??),x2?x?2
7.命题“?x??,都有x??”的否定是( )
A.?x??,都有x?0 C.?x??,使得x?0 B.?x?1,使得x?0 D.?x?1,使得x?0
1
19 20 21 22 23 24 25 26 27 28
8.“若x2?1,则?1?x?1”的逆否命题是( ) A.若x2?1,则x?1或x??1 C.若x?1或x??1,则x2?1
B.若?1?x?1,则x2?1 D.若x?1或x??1,则x2?1
9.命题“?x?R,2x?x2”的否定为( )
A.?x?R,2x?x2 B.?x?R,2x?x2 C.?x?R,2x?x2 D.?x?R,2x?x2 10.将“对任意实数x,y,都有x2?y2?2xy外”改写成全称量词命题为( ) A.?x,y?R,x2?y2?2xy B.?x,y?R,x2?y2?2xy C.?x?0,y?0,x2?y2?2xy D.?x?0,y?0,x2?y2?2xy 11.在区间(??,0)上为增函数的是 ( )
23A. y?()x B. y?log1x
3C. y??(x?1)2 D. y?log2(?x)
329 30 31 32 33 34
12.给定四个函数:①y?x3?3x;②y?1?x?0?;③y?x3?1;④xx2?1y?,其中是奇函数的有( )
xA.1个 B.2个 C.3个 D. 4个 13.下列函数中,在区间?0,2?上为增函数的是( )
1 D.y??x xA.y?3?x B.y?x2?1 C.y?14.函数y?ax?1?a?0?在区间?0,2?上的最大值、最小值分别是( )
2
35 36 A.1,2a?1 B.2a?1,1 C.1?a,1 D.1,1?a
37 38 39 40 41 42 43 44 45 ( 46 47 48 49 50 51
15.函数y?x?3?1x?4的定义域是( ) A.(3,4) B.[3,4)
C.?3,4??(4,??) D.(4,??)
16.二次函数y??x2?4x?2的顶点坐标、对称轴分别是( ) A. ??2,6?,x??2 B. (2,6),x?2 C. (2,6),x??2 D. (?2,6),x?2
17.已知一次函数y?kx?b(k?0)不经过第一象限,则k、b的符号是( A. k?0,b?0 B. k0,b0 C. k?0,b?0 D. k?0,?b?0 18.已知二次函数的图象顶点为?2,?1?,且过点?3,1?,则函数的解析式为 )
A. y?2?x?2?2?1 B. y?2?x?2?2?1 C. y?2?x?2?2?1 D. y?2?x?2?2?1
19.
f?x???x2?mx在???,1?上是增函数,则m的取值范围是( )
A. ?2? B. (??,2] C. ?2,??? D. ???,1?20.函数y?x2?x??1?x?3?的值域是( )
A. [0,12] B. ????14,12??? C. ??1??3???2,12?? D. ??4,12??
3
) 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69
21.函数f(x)?ax?3?4(a?0,且a?1)的图象恒过定点( ) A.(3,4) B.(0,1) C.(0,5) D.(3,5)
22.已知幂函数f(x)图象过点(3,3),则f(9) ?( ) A. 3 B. 9 C. -3 D. 1 23.函数y?lg?x?1?的定义域是( )
A.???,??? B.?0,??? C.??1,??? D.??1,???
24.函数y?ax?1?1,(a?0且a?1)的图像必经过一个定点,则这个定点的坐标是( )
A.?0,1? B.?1,2? C.?2,3? D.?3,4?25.已知logx8?3,则x的值为( )
1 2
A.B.2 C.3 D.4
26.函数f?x??x2?3x?4的零点是( )
A.1,-4 B.4,-1 C.1,3 D.不存在
27函数的零点是( )
A.1,-3 B.3,-1 C.1,2 D.不存在
28.函数f?x??x3?3x2?1的单调递减区间为( ) A. (2,??) B. (??,2) C. (??,0) D. (0,2)
4
70 71 72 73
2y?x在x?1处的导数为( ) 29.
A.2x B.2 C.2??x D.1
30.若函数f(x)?x3?2x2?1,则f'(?1)?( )
A.-7 B.-1 C.1 D.7
74
31等于
A.-2ln2
B.2ln2
C.-ln2
75 32.360°化为弧度是( )
76 A.π2 B.? C.
??2 D.2?77 33.tan??3则
sin??cos?sin??cos??( )
78 A. 2 B. 1 C. 3 79 D. 4
80 34.已知角?的终边经过点??4,3?,则cos?? ( )
81 A. ?4
B. 355
C. 3 D. -4
82
35.若点(?32,12)在角?的终边上,则cos?的值为( ) 83
A.?32 B.?1 C.3122 D.2
5
D.ln2