题干

如图,边长为a的正六边形内有一边长为a的正三角形,则=(  )

A:3

B:4

C:5

D:6

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答案(点此获取答案解析)

C

同类题4

美文品析

阅读下面文章,完成下列问题。

风吹不掉的红榜

葛俊康

①上高二那年,我18岁。当时,在老师的心目中,我是一个无可救药的、扶不上墙的差生。其实我不是天生就是如此的。我读小学、初中的时候成绩还蛮好的。只是升入高中后,由于爸爸的去世,我才失去了学习的兴趣。爸爸是镇里的老师。一次,爸爸为了救一名落水的学生,永远地离开了我和妈妈。

②爸爸的死,让妈妈成了学校里的临时工,专门负责打扫学校的教学楼。从此,我们家就搬到了学校。母亲是农民,没有读过书,在学习上帮不了我啥忙,只知道在生活上让我吃好穿好,平时回家啥都不让我做。所以,每次考试拿到成绩后,我觉得最对不起的就是我母亲,不敢拿回家面对母亲的眼神。母亲问考试情况,我就只好含糊其词地说:“考得不好。”母亲往往就会叹口气,说:“康娃,你爸走了几年了,妈现在就只有你,妈的希望就全部在你身上,你无论如何给妈争口气。”  

 ③母亲的这些话,常常压得我喘不过气来。但知道母亲也是望子成龙,想我能考上一所好的大学。终于,在高二下学期的期中考试中,我进了年级的前50名。名字终于上了学校的红榜。看着贴在教学楼前面墙壁上的红榜,我的心里不知是啥滋味。   

④放学回家,我告诉母亲我上了红榜。母亲的脸上立即就露出了灿烂的笑容。忙说:“真的?快,马上带我去看看。”说完,母亲不顾锅里正炒着菜,把火一关,拖着我就往教学楼跑。看着红榜上我的名字,母亲的脸上满是喜悦的笑容。   

⑤那晚,母亲的笑意一直挂在脸上。母亲很久没有这样笑过了。看着母亲的笑容,我的心里多少也感到好受了一些,不久就慢慢地沉入了梦乡。要到天亮的时候,我被外面的风雨声惊醒了。原来外面下起了大雨,我躺在床上,听着外面的风雨声,没有睡意的我便起了床。走过母亲的房间时,我发现母亲的房门是开着的。往里一瞧,床上却没有母亲的身影。   

⑥母亲去哪里了?我的心一下就慌了,在这大风大雨的夜晚,母亲一个人会到哪里去呢?我忙拿上手电筒出门去找。走到教学楼的时候,我看见一个人正站在那里用手扶着墙壁。我忙走了过去,发现是母亲。只见母亲两手紧紧地压着下午才贴上去的红榜。   

⑦看着母亲的样子,我十分地不解。母亲看着我,说:“你来干啥?快去睡,明天还要读书!”我问母亲:“妈,你那样压着红榜干啥?”母亲看着我,认真地说:“我这样压着,它才不会被风吹掉。”听完母亲的话,我还是不理解。我想,即使吹掉了又怎样?母亲看着我困惑的样子,说:“我就是想让大家明天再看看,我儿子也上了红榜。”母亲一说完,我的心里竟猛地震动了一下。母亲,这就是我可亲可敬的母亲。此时,看着母亲在风雨中扶着红榜的样子,我的眼泪不自觉地就流了出来。我走上前,紧紧地抱着母亲,任泪水肆意地流淌。

⑧一年后,我终于考上了一所理想的大学。走的那天,母亲送我到车站。在火车开动的一瞬间,看着站台上母亲那花白的头发,我的眼睛又湿润了。我觉得最对不起的就是我母亲,因为我第一次上红榜的成绩全是假的,是作弊的结果。

 (选自《齐鲁晚报》2012年11月2日,有改动)

同类题5

阅读理解

    Knowing how much her own children loved presents at Christmas, Ann Sutton always tried to seek help for one or two poor families. With a social worker mother, the Sutton children had inherited her commitment to service, and knew never to take their good fortune at Christmas for granted. This year, Kinzie, her seven-year-old daughter was thrilled that Santa Claus would make a special visit to a 22-year-old mother named Ashley who worked in a factory raising her 12-month-old son by herself.

    The phone rang on Sunday. A representative from a local organization was calling to say that the aid Ann had requested for Ashley had fallen through. No Santa Claus, no presents, nothing.

    Ann saw the cheer vanish from her children's faces at the news. Without a word, Kinzie ran into her bedroom. She returned, her face set with determination. Opening up her piggy bank, she put all the coins onto the table: $3.30. Everything she had.

    “Mom,” she told Ann, “I know it's not much. But maybe this will buy a present for the baby.”

    At a breakfast meeting the next day, Ann told her coworkers about her daughter's story. To her surprise, staff members began to open their purses and empty their pockets to help Kinzie. By day's end, the story of Kinzie's gift had spread beyond Ann's office. She received a call from an unknown donor. If a seven-year-old could give everything she had, he said, he should at least match her gift 100 to 1. He contributed $300.

    On Christmas Eve, Ann drove through the pouring rain to the small trailer where the Ashleys lived. Then she began to unload the gifts from the car, handing them to Ashley one by one.

    Ashley was very moved. Reflecting on a little girl's generosity, Ashley says she'll one day be able to do something similar for someone else in need. “Kinzie could have used that money for herself, but she gave it away,” Ashley says. “She's the type of kid I'd like my son to grow up to be.”