2014届北京市朝阳二模文科数学试卷

适用年级:高三
试卷号:594399

试卷类型:高考模拟
试卷考试时间:2017/7/19

1.单选题(共1题)

1.
设等差数列的公差为,前项和为,若,则的最小值为()
A.10B.
C.D.

2.选择题(共1题)

2.阅读理解

    The Spring Festival is the biggest festival for Chinese people all around the world. The celebration usually lasts for 15 days. There is a lot to do.

    On the eve of the Spring Festival, family members get together and have big meals. Their favorite dish on this day is dumpling.

    Days before the Spring Festival, families will clean their homes. People think cleaning sweeps away bad luck. It makes the house ready for good luck.

    The color red is everywhere during the Spring Festival. People think red is a happy color and will bring them a bright future. People wear red, too. They decorate(装饰) their homes with pieces of red paper. Kids get a lot of “hongbao”. It is a red paper bag with money in it. Usually, older people give younger ones hongbao. They think it brings good luck.

    The Spring Festival is the time to make everybody happy. So don't say any bad words or do anything that will bring unhappiness to other people.

    For instance(例如), you'd better not say any bad words like “death”. Don't break anything. People think that it means your luck is running out. Also, don't borrow or lend money in these days. If you have borrowed money, return it before the Spring Festival.   

3.填空题(共1题)

3.
在如图所示的棱长为的正方体中,作与平面平行的截面,则截得的三角形中,面积最大的值是__________;截得的平面图形中,面积最大的值是__________.

4.解答题(共1题)

4.
某市规定,高中学生在校期间须参加不少于80小时的社区服务才合格.某校随机抽取20位学生参加社区服务的数据,按时间段(单位:小时)进行统计,其频率分布直方图如图所示.

(1)求抽取的20人中,参加社区服务时间不少于90小时的学生人数;
(2)从参加社区服务时间不少于90小时的学生中任意选取2人,求所选学生的参加社区服务时间在同一时间段内的概率.
试卷分析
  • 【1】题量占比

    单选题:(1道)

    选择题:(1道)

    填空题:(1道)

    解答题:(1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:3