湖南省邵阳县2018年初中毕业班中考数学复习最后一模试卷

适用年级:初三
试卷号:567097

试卷类型:中考模拟
试卷考试时间:2018/7/4

1.单选题(共5题)

1.
下列各组运算中,结果为负数的是  ( )。
A.–(-3)B.(-3) ×(-2)C.D.(-3)²
2.
下列各式中,计算结果为x2﹣1的是(   )
A.(x+1)2B.(x+1)(x﹣1)C.(﹣x+1)(x﹣1)D.(x﹣1)(x+2)
3.
滴滴快车是一种便捷的出行工具,计价规则如下表:
计费项目
里程费
时长费
远途费
单价
1.8元/公里
0.3元/分钟
0.8元/公里
注:车费由里程费、时长费、远途费三部分构成,其中里程费按行车的实际里程计算;时长费按行车的实际时间计算;远途费的收取方式为:行车里程7公里以内(含7公里)不收远途费,超过7公里的,超出部分每公里收0.8元.
 
小王与小张各自乘坐滴滴快车,行车里程分别为6公里与8.5公里,如果下车时两人所付车费相同,那么这两辆滴滴快车的行车时间相差( )
A.10分钟B.13分钟C.15分钟D.19分钟
4.
已知电流I(安培)、电压U(伏特)、电阻R(欧姆)之间的关系为I=,当电压为定值时,I关于R的函数图象是( )
A.B.C.D.
5.
据中国电子商务研究中心监测数据显示,2015年第一季度中国轻纺城市场群的商品成交额达27 800 000 000元,将27 800 000 000用科学记数法表示为()
A.2.78×1010B.2.78×1011C.27.8×1010D.0.278×1011

2.选择题(共5题)

6.木炭粉还原氧化铜实验后的混合粉末中含有铜、氧化铜、少量木炭粉,实验室从该混合粉末中回收铜的方案如图1:

7.木炭粉还原氧化铜实验后的混合粉末中含有铜、氧化铜、少量木炭粉,实验室从该混合粉末中回收铜的方案如图1:

8.木炭粉还原氧化铜实验后的混合粉末中含有铜、氧化铜、少量木炭粉,实验室从该混合粉末中回收铜的方案如图1:

9.语法填空

MY Travel Experience in China

    During the summer holidays I visited a variety of regions in China.

My first stop was Beijing and of course the Great Wall. Without question it lived up to my {#blank#}1{#/blank#} (expect).

    After a long journey, I reached Yunnan. With{#blank#}2{#/blank#}(it) minority villages and impressive landscapes, Yunnan had a lot to offer. One of my {#blank#}3{#/blank#} (enjoy) moments in Yunnan was during my visit to The Tiger Leaping Gorge. The climb over the gorge was at times exhausting {#blank#}4{#/blank#} always breathtaking. The views couldn't {#blank#}5{#/blank#} (imagine) in their beauty and they {#blank#}6{#/blank#} (leave) me with many great memories.

    After taking a boat from the mainland I arrived at {#blank#}7{#/blank#} island province of Hainan. There I visited Baihua Waterfall. Floating on a pool of water at the base and looking up at the waterfall with a background of blue sky was one of the most {#blank#}8{#/blank#} (relax) experiences of my life.

    Throughout China there are many ancient buildings and in particular ancient towns. Lijiang and Dali both have glorious {#blank#}9{#/blank#} (example) of this. It was remarkable to step back in time and get an idea of{#blank#}10{#/blank#} China might have looked like all those years ago. I thought the buildings were beautiful and full of history.

    I had a wonderful time! China is both fascinating and beautiful!

10.语法填空

MY Travel Experience in China

    During the summer holidays I visited a variety of regions in China.

My first stop was Beijing and of course the Great Wall. Without question it lived up to my {#blank#}1{#/blank#} (expect).

    After a long journey, I reached Yunnan. With{#blank#}2{#/blank#}(it) minority villages and impressive landscapes, Yunnan had a lot to offer. One of my {#blank#}3{#/blank#} (enjoy) moments in Yunnan was during my visit to The Tiger Leaping Gorge. The climb over the gorge was at times exhausting {#blank#}4{#/blank#} always breathtaking. The views couldn't {#blank#}5{#/blank#} (imagine) in their beauty and they {#blank#}6{#/blank#} (leave) me with many great memories.

    After taking a boat from the mainland I arrived at {#blank#}7{#/blank#} island province of Hainan. There I visited Baihua Waterfall. Floating on a pool of water at the base and looking up at the waterfall with a background of blue sky was one of the most {#blank#}8{#/blank#} (relax) experiences of my life.

    Throughout China there are many ancient buildings and in particular ancient towns. Lijiang and Dali both have glorious {#blank#}9{#/blank#} (example) of this. It was remarkable to step back in time and get an idea of{#blank#}10{#/blank#} China might have looked like all those years ago. I thought the buildings were beautiful and full of history.

    I had a wonderful time! China is both fascinating and beautiful!

3.填空题(共4题)

11.
分解因式:x2﹣x=_____.
12.
如果m是从﹣1,0,1,2四个数中任取的一个数,n是从﹣2,0,3三个数中任取的一个数,则二次函数y=(x﹣m)2+n的顶点在坐标轴上的概率为________.
13.
如图,直线l1∥l2  , 直线l3与l1、l2分别交于A、B两点,若∠1=70°,则∠2=________.
14.
某校为了了解本校七年级学生课外阅读的喜好,随机抽取该校七年级部分学生进行问卷调査(每人只选一种书籍).下图是整理数据后绘制的两幅不完整的统计图,请你根据图中提供的信息解答下列问题:
(1)在扇形统计图中,“其他”所在扇形的圆心角等于   度;
(2)若该年级有600名学生,请你估计该年级喜欢“科普常识”的学生人数约是   

4.解答题(共5题)

15.
计算:
16.
先化简,再求值:,其中x=﹣3.
17.
如图,直线:y=2x+1与直线:y=mx+4相交于点P(1,b)

(1)求b,m的值   
(2)垂直于x轴的直线 x=a与直线分别相交于C,D,若线段CD长为2,求a的值
18.
交通工程学理论把在单向道路上行驶的汽车看成连续的液体,并用流量、速度、密度三个概念描述车流的基本特征。其中流量q(辆/小时)指单位时间内通过道路指定断面的车辆数;速度v(千米/小时)指通过道路指定断面的车辆速度;密度(辆/千米)指通过道路指定断面单位长度内的车辆数,为配合大数据治堵行动,测得某路段流量q与速度v之间的部分数据如下表:
速度v(千米/小时)

5
10
20
32
40
48

流量q(辆/小时)

550
1000
1600
1792
1600
1152

 
(1)根据上表信息,下列三个函数关系式中,刻画q,v关系最准确的是________(只需填上正确答案的序号)① q=90v+100 ② q=   ③ q=-2v²+120v
(2)请利用(1)中选取的函数关系式分析,当该路段的车流速为多少时,流量达到最大?最大流量是多少?   
(3)已知q,v,k满足 q=vk,请结合(1)中选取的函数关系式继续解决下列问题:
①市交通运行监控平台显示,当 12≤v<18时道路出现轻度拥堵,试分析当车流密度k在什么范围时,该路段出现轻度拥堵;
②在理想状态下,假设前后两车车头之间的距离d(米)均相等,求流量q最大时d的值
19.
丁丁参加了一次智力竞赛,共回答了30道题,题目的评分标准是这样的:答对一题加5分,答错或不答一题倒扣1分.如果在这次竞赛中丁丁的得分要超过100分,那么他至少要答对________题.
试卷分析
  • 【1】题量占比

    单选题:(5道)

    选择题:(5道)

    填空题:(4道)

    解答题:(5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:2

    5星难题:0

    6星难题:7

    7星难题:0

    8星难题:2

    9星难题:3