题目内容

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。

1996 年美国标准化委员会(ANSI)将()(二维码)做为美国的运输包装的纸面 EDI 标准。

具有代表性的矩阵式二维条码有:QR Code 、Data Matrix、()、Code One等。

Things, ______is often the case, will turn out to be contrary to ones wishes.

A. as
B. which
C. that
D. it

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