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4152.7 × 1=____(用小数表示)
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4152.7

同类题3

阅读课文《精读与略读》,回答问题。

      一个人要积累知识,就必须读书。对重要的文章和书籍,要认真读反复读,要逐字逐句地深入钻研,对重要的语句和章节所表达的思想内容还要做到透彻理解。这就是精读。我们所读的课文,都是经过精心编选的,对我们学习语文很有帮助,因此须要精读。

      然而,人的精力是有限的,而书籍却浩如烟海,谁也不可能读完所有的书,更不可能对每本书每篇文章都去精读。为了获取更多的知识,更多的信息,又必须读大量的书,因此我们还要学会略读。

      略读就大略的读。略读可以增加阅读量。通过略读,可以用较少的时间浏览大量的书刊,从而扩大自己的知识面,获得对有关读物的总的认识,便于以后需要 的时候去查找。略读又是精读的基础。通过泛读,可以在很短的时间内知道一篇文章或一本书的基本内容,从而确定它是否须要精读,或哪些地方需要精读。

      怎样进行泛读呢?

      如果面对一大堆读物,我们可以将每本书的内容提要、前言、章节、目录等很快地从头到尾看一遍,这样就能大致了解每本书的梗概、特点和应用范围。对于一本读物来说,可以几段几段地粗读,也可几页几页地翻阅,而不要探究某个字、词或句子的意思。俗话说的“一目十行”就是指这种走马观花式的快速阅读方法。

      为了提高读书速度,略读通常采用默读的方式。

      当然,泛读也并不是读完了事,每次泛读完毕,也应想一下所读的东西,最好用简炼的语言概括一个读物内容。

      只要我们善于把精读和略读结合起来,就能取得最佳的读书效果。

课文分几部分,每段的段意是什么?

同类题4

阅读理解

    Parents and kids today dress alike, listen to the same music, and are friends. Is this a good thing? Sometimes, when Mr. Ballmer and his 16-year-old daughter, Elizabeth, listen to rock music together and talk about interests both enjoy, such as pop culture, he remembers his more distant relationship with his parents when he was a teenager.

    “I would never have said to my mom, 'Hey, the new Weezer album is really great. How do you like it?''' says Ballmer. “There was just a complete gap in taste.”

    Music was not the only gulf. From clothing and hairstyles to activities and expectations, earlier generations of parents and children often appeared to move in separate orbits.

    Today, the generation gap has not disappeared, but it is getting narrow in many families. Conversations on subjects such as sex and drugs would not have taken place a generation ago. Now they are comfortable and common. And parent-child activities, from shopping to sports, involve a feeling of trust and friendship that can continue into adulthood.

    No wonder greeting cards today carry the message, “To my mother, my best friend.”

    But family experts warn that the new equality can also result in less respect for parents. “There's still a lot of strictness and authority on the part of parents out there, but there is a change happening,” says Kerrie, a psychology professor at Lebanon Valley College. “In the middle of that change, there is a lot of confusion among parents.”

    Family researchers offer a variety of reasons for these evolving roles and attitudes. They see the 1960s as a turning point. Great cultural changes led to more open communication and a more democratic process that encourages everyone to have a say.

    “My parents were on the 'before' side of that change, but today's parents, the 40-year-olds, were on the 'after' side,” explains Mr. Ballmer, “It's not something easily accomplished by parents these days, because life is more difficult to understand or deal with, but sharing interests does make it more fun to be a parent now.”