题干

为提高信息在传输中的抗干扰能力,通常在原信息中按一定规则加入相关数据组成传输信息.设定原信息为),传输信息为,其中运算规则为:,例如原信息为111,则传输信息为01111.传输信息在传输过程中受到干扰可能导致接收信息出错,则下列接收信息一定有误的是()

A:11010

B:01100

C:10111

D:00011

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答案(点此获取答案解析)

C

同类题3

阅读下文,回答问题

    ①那是一个老师告诉我的故事,至今仍珍藏在心里,让自己明白在人世间,其实不应该放过每一个能够帮助别人的机会。

    ②多年前的一天,这位老师正在家里睡午觉,突然,电话铃响了,她接过来一听,里面却传来一个陌生粗暴的声音:“你家的小孩偷书,现在被我们抓住了,你快来啊!”在话筒里传来一个小女孩的哭闹声和旁边人的呵斥声。她回头看着正在看电视的唯一的女儿,心中立即就明白过来是怎么回事了。

    ③她当然可以放下电话不理,甚至也可以斥责对方,因为这件事和她没任何关系。

    ④但自己是老师,说不定她就是自己的学生呢?此时此刻,那个一念之差的小女孩,一定非常惊慌害怕,正面临着尴尬的境地。犹豫了片刻之后,她问清了书店的地址,匆匆忙忙赶了过去。正如她预料的那样,在书店里站着一位满面泪痕的小女孩,而旁边的大人们,正恶狠狠地大声斥责着。她一下子(走、冲)上去,将那个可怜的小女孩(搂、拉)在怀里,转身对旁边的售货员(严厉、严肃)地说:“有什么事就跟我说吧,我是她妈妈,不要吓着孩子。”在售货员不情愿的嘀咕声中,她交清了28元的罚款,才领着这个小女孩走出了书店,并看清了那张被泪水和恐惧弄得一塌糊涂的脸。

    ⑤她笑了起来,将小女孩领到家中,好好清理了一下,什么都没有问,就让小女孩离开了。临走时,惊魂未定的小女孩,深深地看了她一眼,便飞一般地跑掉了。

    ⑥时间如流水匆匆而过,不知不觉间,多少年的光阴一晃而过,她早已忘了这件事,依旧住在那里,过着平稳安详的生活。

    ⑦有一天中午,门外响起了一阵敲门声。当她打开房门后,看到了一位年轻漂亮的陌生女孩,露着满脸的笑容,手里还拎着一大堆礼物。“你找谁?”她疑惑地问着,但女孩却激动地说出了一大堆话。好不容易,她才从那陌生女孩的叙述中恍然明白,原来,她就是当年那个偷书的小女孩,刚从某名牌大学毕业,已找到了一份令人羡慕的工作,现在特意来看望自己。女弦眼睛泛着泪光,激动地说:“___________________________________________________________________________

____________________________________________________________________________________。”

⑧望着女孩脸上幸福的笑容,她也笑了。

同类题4

完形填空

       As I rushed among the tables, suddenly, a  1  asked if I could mind a child. I was quite   2 but I could tell the man was quite desperate. So I had to make a  3  with him that if he wanted his son to stay and wait for him, he had to 4  something in the shop.

       This was quite  5  for the man to do; I could  6  he was quite poor by the  7  he was dressed. It looked as if he had tried to come in his 8 clothes. But they still looked a bit old and worn out 9 he had often worn them, just to make himself look best. Looking down I could see his 10  were also a bit torn and the heels were in a terrible state. I thought he was going for a job interview. In the end he bought a small box of 11 for his little son and seated him down in the corner. I could tell the boy was feeling down and only could   12  with a bit of cheering up.

       Seeing that the kid sat there for quite a while, I was a bit  13  as the poor little kid was sitting  14  his own. People watched him and some kids even came over to pick on him. I was15  to see one of them even knocked his cookies off the table.He quickly went and got them back without saying a word.I was hoping his father would 16  up and come back for his son's 17  .

        At closing time, the only person left was the little boy.After a while, the father finally came in with a tiresome look. I  18 he didn't get any job.As they were leaving, I offered the kid a little cake, but the man rejected it. I19  he felt as if I had just abused him.Of course I didn't mean to.But I could understand why he felt like that.I only wished them good  20  whatever happened.

The man opened the door to leave-father and son hand in hand.