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从符号学的角度讲，二维条码和一维条码都是信息表示、携带和识读的手段。但从应用角度讲，尽管在一些特定场合我们可以选择其中的一种来满足我们的需要，但他们的应用侧重点是不同的：一维条码用于对“物品”进行标识，二维条码用于对“物品”进行()。

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There are many reasons why food fads have continued to flourish. Garlic has long been touted(兜售)as an essential ingredient of physical prowess(能力)and as a flu【B1】, squash has been thought by some to cure digestive disorders, and red pepper has been【B2】to promote endurance. The natural human desire for a simple solution to a difficult problem【B3】the stage for promoting miraculous potions(饮剂), pills and combination of chemicals. The 【B4】individuals who eagerly embrace any second-hand information with scientific overtones(暗示)provide the foundation for healthy business enterprises. A person who has never crossed the【B5】of a health food store may be astonished, 【B6】or over-joyed. Countless elixirs(万应灵药), herbs, powders and other fascinating extracts are only a【B7】of the high-profit selection. The available literature includes pamphlets extolling(赞扬)the amazing return of youth one can【B8】while drinking a potion filled with tropical weeds, as well as volumes【B9】the reader of an almost【B10】longevity. The store is directly keyed to arouse visitors【B11】over their health and to【B12】on real and imagined problems by offering solutions that, 【B13】cost more than the customers may be able to【B14】Health food store patrons are often cajoled(劝诱)into buying tonics(补药)that promise to make the functioning of healthy organs even better, 【B15】whether an improvement is【B16】for. Promotion of expensive products that consumers do not actually need takes【B17】initiative and insight. 【B18】occasion, there may even be some slight【B19】for truth in an entrepreneurs【B20】to cure customer of ills—for a price.
【B1】

A. remedy
B. medication
C. therapy
D. recipe

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信息量容量大、安全性高、读取率高、()等特性是二维条码的主要特点。

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According to Hofstadter, American teachers

A. serve as models to the intellectual life.
B. are not active in their intellectual life.
C. only work as adequate workman.
D. play an very important role in the society.

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Data Matrix 是一种矩阵式二维条码。它有两种类型，即 ECC000-140 和()。ECC000-140 具有几种不同等级的卷积纠错功能;而另一种 Data Matrix 则使用Reed-Solomon 纠错，在最新的应用中，另一种 Data Matrix 使用得更多。

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