________（47）A.However they just don’t have as muc
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________（47）
A.However,they just don’t have as much fun as children in small towns.
B.Children in the cities had few options,fewer choices of places to play.
C.Why is there no place children in cities to play?
D.One clear finding from their studies is that people need green spaces for better mental health.
E.However,tending window boxes isn’t the same as being an amateur gardener and growing peas,tomatoes and salad greens in a backyard garden.
F.these are the spaces that no one uses and they are everywhere.
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答案：D
前一句讲的是“心理学家们一直研究人们在离开乡村搬到城市环境后所经历的变化”，而选项D中的核心词one clear finding与该句联系最紧，该选项的意思是：“他们的研究得出的一个清晰的结果是：为了更健康的心理，人们需要绿色的空间”。