S-S-snakes! (Step into Reading， Step 3)[进阶阅读3：印度巨蛇] 英文原版 [平装] [5岁及以上] 下载 mobi epub pdf 电子书 2025

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内容简介

A scintillating survey of sensational serpents, from blood-spewing West Indian boas to " flying" golden tree snakes.

One of the Step into Reading series, Penner's book offers the attraction of reading about a nonbabyish topic in an easy-to-read format. There are some flaws: the illustrations are only loosely related to the text and are not given geographical context, and the generalization "Mother snakes don't take care of their babies" is made to seem a "character" flaw. Still, the subject is bound to attract kids, and beginning readers will gain a sense of accomplishment from the reading as well as an increase in their knowledge of the subject.

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精彩书评

This slim introduction offers barely enough information to whet one's appetite. Penner opens with a brief explanation of how an Indian snake charmer "charms" a cobra, and alludes to snakes in mythology and ancient history. The minimal text then describes some of the major physical and behavioral characteristics common to all snakes?diet, various hunting and feeding methods, birth of young?and special characteristics of assorted species. Full-color drawings of 30 representative species from around the world accompany each page of text. While they are adequate depictions, those of humans are mediocre; most of the children look like short adults. Although the book is clearly written, it suffers from poor organization; topics are addressed in random order. Also, the coverage is superficial. Descriptions of anatomy, methods of locomotion, and growth and development are particularly sketchy. Patricia Lauber's Snakes Are Hunters (Crowell, 1988) and Seymour Simon's Snakes (HarperCollins, 1992) provide more in-depth information on the same subject; the latter title also offers superb photography that gives a truer sense of the nature of snakes.
--Karey Wehner, San Francisco Public Library
S-S-snakes! (Step into Reading， Step 3)[进阶阅读3：印度巨蛇] 英文原版 [平装] [5岁及以上] 下载 mobi epub pdf txt 电子书 格式

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近代信息定义（肯定式的真定义）

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好！适合四年级小朋友

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近代信息定义（肯定式的真定义）

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信息就是信息，信息是物质、能量、信息及其属性的标示。

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标识与表征的区别

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用卷买的，便宜，送货很快，很满意

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内容很丰富，故事也很有趣，很好的分级读物

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1.邓's信息定义

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信息是不确定性的减少。连续用了两次否定，就像哲学中的“否定之否定定律”，否定之否定就是肯定。标准化“定义”的要求，是用“肯定式的属概念+种差”，故否定式的定义应该更贴近是“解释”。否定式的界定是定义的禁忌，被动式定义也是。

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