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【单选题】
What conclusion can be drawn from the essay about the United States during the time of Henry Ford's youth?A.
Horse-drawn carriages were used as a popular means of transportation.
B.
Most people were tired of horse-drawn carriages and wanted a better way to travel.
C.
the assembly line made it more difficult for people to invent new products.
D.
Many inventors were trying to invent a fast and comfortable way to travel.
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