A:would have
B:would have had
C:will have
D:had
判断下列图片与单词是否相符,用“正确”或“错误”表示。
friendship band
( )
His father bought iPhone 6s for his mother as useful gift yesterday.
我们曾体验过以下一些声现象,其中能说明声音产生原因的是( )