邻国:①____;②____;③____;④____;
隔海相望的国家:⑤____;⑥____;
海域:⑦____;⑧____
大洋:⑨____;⑩____
——What do you think of the woman singer?
—— Her voice sounds _____. I like her songs.
一行星绕恒星做圆周运动,由天文观测可得,其运动周期为T,速度为v,引力常量为G,则下列说法错误的是( )