单选题 Which of the following is NOT a function of the household system?

A、 The system can recognize your fingerprint.
B、 You can call the refrigerator from the supermarket.
C、 The system can call for help when there is a household problem.
D、 The system can do the shopping for you.

【正确答案】 D

【答案解析】本题测试对主要内容的理解能力，要求判断该系统不具有哪种功能。选项A、B、C 在文中都有明确提及，只有选项D没有提到，因此正确答案应为D。
robot n．机器人，遥控设备
burst v．爆裂，炸破，爆发
plumber n．水管工人
fire extinguisher 灭火器
fingerprint n．指纹，手印
figure out合计为，计算出，领会到