这里有些数据
https://www.cdc.gov/nchs/pressroom/nchs_press_releases/2017/201706_NSFG.htm
55%不算低,离100%还有些距离。。:)
这里有些数据
https://www.cdc.gov/nchs/pressroom/nchs_press_releases/2017/201706_NSFG.htm
55%不算低,离100%还有些距离。。:)
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调查不一定准,看看周围的孩子们,才知道当今实况。。。。。
-lovecat08-
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10/09/2021 postreply
08:03:59
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你周围是局部,有那个地区的特点,未必就是全美国的普遍啊。。
-桃子苹果-
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10/09/2021 postreply
08:42:18
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