四川省成都市简阳市简城学区、镇金学区2019-2020学年九年级上学期10月月考数学试题

适用年级:初三
试卷号:571774

试卷类型:月考
试卷考试时间:2019/11/5

1.选择题(共2题)

1.根据短文内容,选择最佳答案。

    Baloo the bear, Leo the Lion and Shere Khan the tiger have the most unusual and unlikely friendship between them. They were saved eight years ago, when they were cubs only two months old.

    They were first sent to a rescue(救护)center, where they were raised together. Now they are in an American zoo. Because they came here as a kind of family, the zoo built a large clubhouse so that they could all sleep in it.

    Now they have grown up. You can see them playing around like brothers. The three big animals seem to no sense(意识) of their animal differences.

    Baloo and Shere Khan are very close. That is because they rise early, as Leo being a lion likes to spend most the day sleeping. When Leo wakes up the three of them mess around for most of the day before they settle down to some food. It is wonderful to see a giant American Black Bear put his arm around a Bengal tiger and then to see the tiger touch the bear with his nose lightly like a pet cat. You can often see they lie on top of each other for heat and for love.

    “They are not wild animals any more. But you must remember who you are dealing with when you are with them,” said one of the zoo keepers.

2.根据短文内容的理解,选择正确答案。

    In China, there're many different kinds of food. Some of them are very popular. The real Chinese food is dumplings. Now let's talk about them, OK?

    Everyone in China likes dumplings very much, and there are many different kinds of dumplings. Some have meat and vegetables in them, others have sugar, eggs and so on. I like dumplings with vegetables and pork better than any other kind.

    Usually people make dumplings at home. If you have no time to make them, you can buy them from any supermarket. Then you take them home and eat them with vinegar.

    The Spring Festival is very important in China. When it comes, we make dumplings, usually we put a coin(硬币) in a dumpling. If one eats the dumpling with the coin in it, he or she will be lucky in the year.

    In the old days, people couldn't often eat dumplings, because they were very poor. Now our country is becoming stronger and stronger, and our people are richer and richer. We can eat them very often.

    Now tell me, do you like dumplings?

    Welcome to China, and we'll invite you to eat the real Chinese food —dumplings.

2.单选题(共2题)

3.
下列说法中,错误的是(   )
A.平行四边形的对角线互相平分
B.对角线互相平分的四边形是平行四边形
C.菱形的对角线互相垂直
D.对角线互相垂直的四边形是菱形
4.
某厂一月份生产产品100台,计划二、三月份共生产250台,设二、三月份平均每月增长率为,根据题意列出方程是(   )
A.B.
C.D.

3.填空题(共2题)

5.
如图,将正方形OEFG放在平面直角坐标系中,O是坐标原点,点E的坐标为(2,3),则点F的坐标为_____.
6.
已知是关于x的一元二次方程x2+(2m+3)x+m2=0的两个不相等的实数根,且满足=﹣1,则m的值是____.

4.解答题(共2题)

7.
毕业在即,某商店抓住商机,准备购进一批纪念品,若商店花440元可以购进50本学生纪念品和10本教师纪念品,其中教师纪念品的成本比学生纪念品的成本多8元.
(1)请问这两种不同纪念品的成本分别是多少?
(2)如果商店购进1200个学生纪念品,第一周以每个10元的价格售出400个,第二周若按每个10元的价格仍可售出400个,但商店为了适当增加销量,决定降价销售(根据市场调查,单价每降低1元,可多售出100个,但售价不得低于进价),单价降低x元销售一周后,商店对剩余学生纪念品清仓处理,以每个4元的价格全部售出,如果这批纪念品共获利2500元,问第二周每个纪念品的销售价格为多少元?
8.
已知△ABC的两边AB,AC是关于x的一元二次方程x2-(2k+3)x+k2+3k+2=0的两个实数根,第三边BC的长为5.
(1)k为何值时,△ABC是以BC为斜边的直角三角形;
(2)k为何值时,△ABC是等腰三角形,并求出此时△ABC的周长.
试卷分析
  • 【1】题量占比

    选择题:(2道)

    单选题:(2道)

    填空题:(2道)

    解答题:(2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:0

    7星难题:0

    8星难题:0

    9星难题:6