阅读材料，回答题。 The New Technology ApplicationOn a more mundane level, third-generation mobile telephones, despite all the delays and the billions squandered on 3G licenses by telecom firms, are still expected to offer consumers high-speed, always on mobile internet access, complete with video, in the next few years.Rapidly proliferating "WiFi" networks already offer wireless access on a local basis. Tiny tracking chips called radio-frequency identific

单选

A are being used to offer wireless access

B are usually used to offer high-speed, mobile internet access

C are already cheap enough to be used as passports

D ale expected to be used as a means to control inventory

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正确答案：

本题解析：

【答案】D
【解析】本题答案在原文第一段。“Soon they will be small．powerful enough tO be implanted into everything from humans to milk cartons，…0r serve as form ofinventory control．”由此可见，D“无线电频率识别装置将可用来控制存货”为正确选项。