The use of the bar code, or Universal Product Code, which was created in part to enable supermarkets to process customers at a faster rate, has expanded beyond supermarkets to other retail outlets and have become readily accepted despite some initial opposition when it was first introduced in 1974.
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Ahave become readily accepted despite some initial opposition when it was first introduced in 1974
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Bhas become readily accepted despite some initial opposition when they were first introduced in 1974
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Chave become readily accepted despite some initial opposition when first introduced in 1974
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Dhas become readily accepted despite some initial opposition when the bar code was first introduced in 1974
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Ebar codes have become readily accepted despite initial opposition when it was first introduced in 1974
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正确答案: D