题干

一次考试某简答题满分5分,以0.5分为给分区间.这次考试有100人 参加,该题没有得零分的人,所有人的得分按(0,1],(1,2],...(4,5]分组所得的频率分布直方图如图所示.设其众数、中位数、平均分最大的可能值分别为m0,mc,x-,则(  )

A:m0>mc>x-

B:m0<mc<x-

C:mc<m0<x-

D:m0<x-<mc

上一题 下一题 0.0难度 选择题 更新时间:2019-06-08 10:37:55

答案(点此获取答案解析)

B

同类题4

阅读下面短文,从短文后各题所给的四个选项(A, B, C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

     “Daily Star, sir” called Jason, carrying some newspapers under his arm. The little boy had been running up and down the street, but there were still twenty 1 left. His voice was almost gone and his heart was 2. The shops would soon close, and all the people would go home. He would have to go home too, carrying the papers 3 money. He had hoped to sell more papers tonight to make more money to buy a4for his mother and some seeds for his bird. That was why he had bought the papers with all his money. He 5 as he thought of his failure to sell all his papers.

     “You don't know the 6of selling papers. You must shout, “Hot news! Bomb bursting!” another newsboy Chad told Jason. “7 it's not in the paper at all,” replied Jason. “Just run away quickly 8they have time to see, and you'll 9out and get your money,” Chad said.

    It was a new 10to Jason. He thought of his bird with no 11 and the cake he wanted to buy for his mother, but was 12 that he would not tell a lie. Though he was 13 a poor newsboy, he had been 14 some good things.

The next afternoon Jason went to the office for his papers 15 Several boys were crowding around Chad, who declared with a 16 smile that he sold six dozen the day before. He added that Jason 17 money because he would not tell a lie. The boy 18 at Jason. “You wouldn't tell a lie yesterday, my boy?” A gentleman at the office came up and patted Jason's shoulder 19.”You're just the boy I am looking for.” A week later, Jason started his new20. He lost sale of twenty papers because he would not tell a lie, but got a well-paid job because he told the truth.

同类题5

阅读下面的文字,完成下列小题

柴门小院

王本道

    记忆的底片中,似有幅图画,那是一棵老树掩映下的一个方方正正的小院。院墙底部砌有尺把高的青石,上部多由稀疏的树木枝条拼凑而成,高不盈米。院门十分简陋,由薄薄的木板条钉制而成,门上无锁,通常是四敞八开的,夜间也只是虚掩着。透过院墙和院门的缝隙,清晰可见院中栽种的瓜果菜蔬、欢蹦乱跳的鸡鸭猫狗、墙上挂着的农具、墙角立着的磨盘,还有那一串串金灿灿的玉米和红艳艳的辣椒。有时候,能看到院里老人拉着幼小的孩子蹒跚学步,系着围裙的女人安静地择菜,“咯咯咯”地召唤着鸡鸭吃食……这是当年我在辽南山区插队时,每天都司空见惯的柴门小院。

    这样的柴门小院,在中国这片古老的土地上不计其数,千百年来,它们供一代代子民繁衍生息。从呱呱坠地、牙牙学语,到十年寒窗、面壁苦读,一个个孩子在柴门的进进出出中长大成人,而后告别小院,走上各自的人生舞台。他们生于斯、长于斯,对柴门小院怀有厚重的情感,寄托了无限情思,无论走到哪里,无一不葆有质朴的家国情怀,涌动着割舍不断的乡愁。

    那一幢幢质朴无华的柴门小院,演绎着许多动人的故事,续写着源远流长的中华文明。“日暮苍山远,天寒白屋贫。柴门闻犬吠,风雪夜归人。”风雪交加的夜晚,出门在外的游子归心似箭,远远看见柴门内微弱的灯光,听到门前的犬吠,那是何等温暖与亲切。“峥嵘赤云西,日脚下平地。柴门鸟雀噪,归客千里至。”诗圣杜甫在饱受安史之乱的磨难之后,与家人久别重逢时发出这样的感慨。柴门虽然简陋,然而它淡泊宁静,里里外外的人和事都清晰可见。“去年今日此门中,人面桃花相映红。人面不知何处去,桃花依旧笑春风。”当年那位风流倜傥的才子崔护,若不是透过柴门的缝隙,一睹那位面若桃花的姑娘的风采,如何能最终成就一段佳话?

    在中国,由于“门第”观念,“门”有着诸多讲究,历来颇受重视。旧时男女谈婚论嫁,首先想到的是“门当户对”,女孩子出嫁被称作“出门子”,迎娶新媳妇称为“过门”。而“门”的种类更是林林总总,“五花八门”。所有的门中,柴门当属造型与材质最为简陋、价值最为低廉的,却也是数千年来中国老百姓用得最多的门。近30多年来,随着生活水平的提高、居住条件的改善,华夏大地随处可见“向阳门第春长在”。然而有一段时间,一些“先富”起来的人们对于“门”的内涵有过误解。他们过分注重装点“门面”,门楼越砌越高,金碧辉煌,且户户朱红的大门终日紧锁,只留一个“猫眼”用以察看外面的动静。一幢幢封闭的宅院如同一座座戒备森严的堡垒,让人望而生忧,望而生畏,寄托着游子乡愁的那一个个小院已无从可寻。

    一个秋日,在从红海滩归来的途中,我顺路去了盘锦市大洼区石庙子村。距村口不远处,就看到几户乌瓦白墙的民居,透过柴门和院墙的缝隙,清晰可见院中栽种的五彩斑斓的鲜花,以及几株硕果盈枝的苹果树、梨树、枣树。我似乎又回到了当年插队的村庄,见到了那一个个修缮一新的柴门小院。在那里,我与知青同学们交谈、嬉戏,周遭树上是熟透的苹果、红枣、香梨,秋意正浓。朦胧之中,辽南山区的那些柴门小院,与如今我生活的辽东湾的乡村小院连成了一片,与祖国江南塞北广袤土地上所有的柴门小院连成了一片——华夏大地上,一眼望不到尽头的柴门小院,蜿蜒曲折,一直通向遥远的地平线,如同古老的大河、大江,绵延不绝。

(有删改)