如图,已知AB是⨀O的直径,点C在⨀O上,过点C的直线与AB的延长线交于点P,AC=PC,∠COB=2∠PCB.
A: Look! What beautiful pictures of flowers they are! ____
B: No, they are not mine.
A: ____
B: They are my father's.
A: Good job! Your father is a great man.
不改变分式0.5x-10.3x+2的值,把它的分子和分母中的各项系数都化为整数,则所得的结果为( )