1.单选题- (共7题)
| 捐款（元） | 20 | 40 | 50 | 100 |
| 人数 | 10 | | | 8 |
表格中捐款40元和50元的人数不小心被墨水污染已看不清楚、若设捐款40元的有x名同学，捐款50元的有y名同学，根据题意，可得方程组（ ）
A． | B． |
C． | D． |
的解为（ ）
＞
| A．在公园调查了1000名老年人的健康状况 |
| B．在医院调查了1000名老年人的健康状况 |
| C．调查了100名小区内老年邻居的健康状况 |
| D．利用派出所的户籍网随机调查了该地区10%的老年人的健康状况 |
2.选择题- (共1题)
根据短文内容，用方框中所给词的正确形式填空，使短文完整、正确。
for you be good careful do should ever friend true |
Middle school is going to use a new way to decide who the {#blank#}1{#/blank#} students are in your class. The top students won't only have high marks. They will also be kids who don't dye (染) their hair, smoke or drink. Here {#blank#}2{#/blank#} some of the new rules.
Tell the {#blank#}3{#/blank#}. Have you ever copied someone else's work on an exam? Don't do it again! If you have played computer games for two hours in your room, don't tell your parents you have{#blank#}4{#/blank#}homework.
Do more at school. Good students love animals and care for other people. You should learn more about animals and try to protect them. Be {#blank#}5{#/blank#} to other people. Try to think of others, not only yourself.
Be open to new ideas. Have you {#blank#}6{#/blank#} thought that people could live on the moon? You {#blank#}7{#/blank#} welcome new ideas, because they make life better for everyone.
Protect {#blank#}8{#/blank#}. If you have to go home late, you should let your parents know. Use the Internet {#blank#}9{#/blank#}. The Internet can be very useful for your studies. But some things on the Internet aren't good {#blank#}10{#/blank#} kids, so try to look at Websites that are good for you.
3.填空题- (共5题)
是方程kx﹣2y﹣1=0的解，则k的值为 ．
4.解答题- (共6题)
．
，并把它的解集在数轴上表示出来．
| 数据段 | 30～40 | 40～50 | 50～60 | 60～70 | 70～80 | 总计 |
| 频数 | 10 | 40 | | | 20 | |
| 百分比 | 5% | | 40% | | 10% | |
注：30～40为时速大于等于30千米而小于40千米，其他类同．
（1）请你把表中的数据填写完整；
（2）补全频数分布直方图；
（3）如果此路段汽车时速超过60千米即为违章，则违章车辆共有多少辆？
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【1】题量占比
单选题:(7道)
选择题:(1道)
填空题:(5道)
解答题:(6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：2
7星难题：0
8星难题：4
9星难题：12