There is ________ ‘h’ in the word ‘ghost’, but the ‘h’ doesn't make _________sound.
A:a; a
B:an; a
C:a; the
D:an; the
下列分数中,能化为有限小数的是( )
在如图所示的四种现象中,属于光的直线传播现象的是( )
将抛物线y=x2+1向下平移2个单位,向右平移3个单位,则此时抛物线的解析式是____.