47. What does the passage say about the idea of a self-service grocery?
A) It was put forward by King Kullen.
B) It originated in the United States.
C) It has been under constant debate.
D) It proves revolutionary even today.
（本题出自2023年6月四级真题卷二）
答案&解析：
47.B)
【精析】细节辨认题。定位句提到，自助式杂货店这个想法最早起源于美国，故答案为B)。
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