题干

在探究“唾液对淀粉的消化作用”时,某小组同学展开了积极的讨论(如图所示),请分析作答:

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同类题3

    Twelve-year-old Leonardo was born in a poor family in Bambamarca in Peru. He knew how to read but he had never seen a book in his life. So he asked the new priest(牧师)in his village to give him one. But there was no electricity. So Leonardo borrowed candles from the church and sat up all night reading it. The next morning, he was at the door of the priest asking for another book to read.

    John Medcalf, the priest,was moved. He also realized that people would love to read if given a chance. But he knew how difficult it was for Leonardo and those in his village to get books. And yet, no one can be taught to read and write without books. To make people in a poor, faraway area grow to love books,they have to be with them. So he thought the only way was to bring books to people.

    But how could this be done? Mobile libraries or car libraries would be too expensive and difficult to continue in the rocky, hilly land of Peru. So what other method could be used?

    Medcalf got a new idea from the barefoot(赤脚)doctors of China. And that was how the barefoot librarians(图书管理员)first appeared in the villages of northern Peru,almost thirty years ago.

    The librarians began by going from village to village, lending books to villagers. They helped start The Rura1 Library Network of Peru.

    At first,they were teachers of the village schools which these faraway libraries belonged to. But the teachers were not very interested in the job because it meant a lot of hard work. So, village elders took on the job themselves.

    Today, there are 600 village libraries across Peru. The barefoot librarians who walk up to 15 hours a day with bags of books are their lifeline.

同类题5

阅读下面的文字,回答问题

天桥上的歌声

      山里的孩子,没啥爱好,就喜欢唱歌。一年的支教时间,在孩子们的歌声中,一晃就过了。想着朝夕相处了一年的孩子们,几天来,我的心情久久不能平静。

      我支教的学校,是一所山村小学,建在一座大山的脚下。学校的对面,远远近近地散落着几个村子。一座石砌的小桥,将学校和村子连为了一体。

      这天是我离校的日子。早晨,天还没有完全亮,我正收拾东西时,敲门声响起。开门一看,全班的三十多个学生,顶着晨风,排着队,静静地站在门外。孩子们脸上挂着泪痕,谁也没有说话,都怯生生地望着我。班长小慧红着脸,站在最前面。

      我愣了一会儿,走上前,摸着小慧的肩膀,问,你们有啥事吗?你们咋了?

      这时,小慧抬起头,擦了擦眼睛,忽然就笑了,说,老师,我们知道您要走了,我们想请您去看看天桥。

      小慧说完,孩子们全都抬起头说,老师,我们请您去看天桥。

      我傻了一下,天桥?啥天桥?

      小慧伸手往外一指,说,就是那座石桥。

      我一听,摸了摸小慧的头,看着孩子们,笑呵呵地说,那不是天天都看着嘛,有啥好看的?

      小慧垂下头,怯生生地说,我们想再为您唱首歌。这时,孩子们又望着我说,老师,我们想再为您唱首歌。

      看着孩子们那一双双企盼的眼睛,我的心里忽然有了一种特别难受的感觉,眼眶一湿,咬了咬嘴唇,说,好,走,我们去看天桥,老师也想再听听你们的歌。

      我刚说完,孩子们马上就紧紧地围在我身边,拉着我就往桥上走。

      几分钟后,我们来到了桥上。

      孩子们看见天桥,一扫刚才的阴郁,全都叽叽喳喳地跑开了。

      走上天桥,我一下愣住了。桥面上,孩子们用带着露水的鲜花铺了几个大字:老师,我们永远爱您!我怔在那里,眼泪又慢慢地开始往外涌。

      这时,一个男孩跑到我面前,拉住我的手问,老师,您知道这桥为什么叫天桥吗?

      我摇摇头,擦了下湿润的眼眶,朝男孩笑了笑。

      男孩说,这桥是村里的顺天爷爷带领我们修的,所以我们叫天桥。还有,我爸说,这是通往山外的金桥,是能使村子富起来的致富桥,所以叫天桥。老师,我爸还说了,您就是我们山里孩子的天桥。

      男孩一说完,孩子们又都围了上来,异口同声地说,老师,您就是我们的天桥。

      我的心被重重地震了一下,忙俯下身子,抱着男孩,望着孩子们,心里说不清是一种啥滋味,只是泪水立马就在脸上婆娑了起来。

      小慧走到我面前,指着桥面上的字说,老师,这是我们全班同学送给您的礼物,希望老师喜欢。老师,我们再给您唱首歌。说完,小慧不等我同意就开始唱了起来。刚唱了第一句,孩子们就跟着唱了起来:春天的花开了∕老师,我们想您∕您的恩泽如绵绵细雨滋润我心田∕夏天的蝉叫了∕老师,我们想您∕您的教诲似凉爽的风轻拂我耳际∕老师,我们想您……

      歌声在桥上回荡,在山里回荡。桥下的河水,带着孩子们的歌声,欢快地向山外流去。

      我忙走进孩子们中间,拉着他们的手,一起唱了起来。

      唱了一首又一首,后来,孩子们唱完了,唱累了,全都哽咽着说不出话来。我忙背过身子,低下头,偷偷掏出手机,拨通了爱人的电话,刚说了几句,爱人就长长地叹了口气,说,我知道你的意思,啥天桥不天桥的,你想留就留下吧!你放心,我和女儿会照顾好自己的。你要注意自己的身体,你那病不能太累了。说完,爱人就挂了电话。

      听着电话里的嘟嘟声,想起爱人和孩子,我的眼泪慢慢地又淌满了脸庞。