如果 x+yy=74 ,那么 xy 的值是( )
— Did you listen to the program yesterday?
— Yes. I can't believe I heard her singing ______ the radio.
What do you like?
已知:I.
II.
回答下列问题:
在思想品德课堂上,老师要求根据下列图片概括成就主题,你认为最合适的是( )