1.选择题- (共9题)
1.将函数f(x)=sin( {#mathml#}{#/mathml#} +x)(cosx﹣2sinx)+sin2x的图象向左平移 {#mathml#}{#/mathml#} 个单位长度后得到函数g(x),则g(x)具有性质( )
2.在直角坐标系xOy中,直线l的参数方程为 {#mathml#}{#/mathml#} (t为参数),在以坐标原点O为极点,x轴的正半轴为极轴的极坐标系中,曲线C的极坐标方程为ρ=2 {#mathml#}{#/mathml#} cos( {#mathml#}{#/mathml#} +θ).
(I)求直线l的普通方程和曲线C的直角坐标方程;
(Ⅱ)设直线l与曲线C相交于M,N两点,求|MN|的值.
3.已知正项等比数列{an}满足:a7=a6+2a5,若存在两项am,an,使得 {#mathml#}{#/mathml#} =4a1,则 {#mathml#}{#/mathml#} + {#mathml#}{#/mathml#} 的最小值为( )
4.抛物线C:y2=4x的焦点为F,准线为l,P为抛物线C上一点,且P在第一象限,PM⊥l于点M,线段MF与抛物线C交于点N,若PF的斜率为 {#mathml#}{#/mathml#} ,则 {#mathml#}{#/mathml#} =( )
5.在某市记者招待会上,需要接受本市甲、乙两家电视台记者的提问,两家电视台均有记者5人,主持人需要从这10名记者中选出4名记者提问,且这4人中,既有甲电台记者,又有乙电视台记者,且甲电视台的记者不可以连续提问,则不同的提问方式的种数为( )
6.在某市记者招待会上,需要接受本市甲、乙两家电视台记者的提问,两家电视台均有记者5人,主持人需要从这10名记者中选出4名记者提问,且这4人中,既有甲电台记者,又有乙电视台记者,且甲电视台的记者不可以连续提问,则不同的提问方式的种数为( )
9.设F1、F2分别是双曲线C: {#mathml#}{#/mathml#} ﹣ {#mathml#}{#/mathml#} =1(a>0,b>0)的左右焦点,点M(a,b).若∠MF1F2=30°,则双曲线的离心率为{#blank#}1{#/blank#}.
2.单项选择- (共13题)
10.
________ President Xi Jinping put________ clearly and firmly, “The Chinese dream, after all, is the dream of the people. We must make persistent efforts and strive to realize it.”
A.It, that | B.As, it | C.What, that | D.It, it |
11.
—Could I surf the Internet for twenty more minutes, Mum?
—Oh, dear, if you________.
—Oh, dear, if you________.
A.must | B.can | C.may | D.should |
12.
According to our school rules, students ________ not carry mobile phones when taking a exam.
A.will | B.may | C.shall | D.need |
13.
Food safety has become a growing concern. Had the offenders been punished severely enough, the situation________ different now.
A.will have been | B.would have been | C.would be | D.shall be |
14.
Seeing the coach nodding ________ to her, the little dancer was no more nervous and went on with her performance.
A.obviously | B.amazingly | C.increasingly | D.encouragingly |
15.
Look! Some workers are busy building a monument, one ______ the national hero
A.in memory of | B.in favor of | C.in need of | D.in place of |
16.
________ we have got everything ready, let’s begin the debate.
A.Before long | B.Rather than | C.Now that | D. Even if |
17.
Little John hardly got anything in________ for his kind act, ________ made him unhappy.
A.award; as | B.reward; which | C.prize; which | D.medals; as |
18.
That hazy(雾霾)weather has hit 104 cities in middle-east China lately makes citizens well aware of
______a terrible problem China is faced with.
______a terrible problem China is faced with.
A.what | B.how | C.which | D.that |
19.
His mind went so blank that little________ down for the first ten minutes in the test.
A.he wrote | B.he was written | C.did he write | D.was he written |
20.
It’s inner beauty, in my opinion, rather than physical beauty, ____matters in the long run.
A.how | B.that | C.when | D.which |
21.
—Cathy, what are you going to do this weekend?
—________, I’m going to see my parents in the countryside.
—________, I’m going to see my parents in the countryside.
A.If ever | B.If busy | C.If anything | D.If possible |
试卷分析
-
【1】题量占比
选择题:(9道)
单项选择:(13道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:13
7星难题:0
8星难题:0
9星难题:0