我们要感谢父母和长辈的____之恩,尽力为家人做一些力所能及的事,关心、体贴父母,孝敬长辈。
若3amb2与5a3b2是同类项,则m=____.
One of this car's ____ (advantage) is that it doesn't use much gasoline.
“人民币上学地理”,依人民币上所显示的景观,上图20元和50元人民币上所显示的景观分别是( )
— Nowadays more and more foreigners are becoming interested in Beijing Opera.
—That's true. It's an important part of Chinese____________.