A:or does she know mine
B:and where does she live
C:she would come here
D:I would have invited her
用频率估计概率,可以发现,抛掷硬币,“正面朝上”的概率为0.5,是指( )
①礼貌 ②宽容 ③友善 ④尊重
为新航路的开辟作出重大贡献的航海家中,发现美洲新大陆的是( )