Which of the following is the main message from the sentence "sidewalks and sycamores are
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Which of the following is the main message from the sentence "sidewalks and sycamores are equally important" in paragraph 7？
A．Sidewalks and pedestrians are both important factors in city planning.
B．Besides sidewalks, trees are also an important part of good environment.
C．It is of no use asking people which is more important, sidewalks or sycamores.
D．Sidewalks and sycamores should both give way to planting trees in city.
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