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最佳答案：hi everyone,thank you for your coming.........finally i hope your children can g
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最佳答案：一球由两根线固定静止在A点,当水平那根线切断后,球开始摆动.B点是球右摆的最远点.问,当球运动到B时支持绳受力和切断水平那根线前球静止在A点时的比例是多少（这个
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最佳答案：The doctor said that I ate too many chillies that my gastric mucosa has been inj
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最佳答案：The last thing to say,aerobics competition will be held this evening .I hope tha
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最佳答案：i hope that you can forgive me ,fogive my rudeness.could i please ask you for an
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最佳答案：I struggle,the immediate start of a dark green sand beach,blue sky,flying above
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最佳答案：it's a pity that i can't stay with you on the last day of 2007.i wanted to give