螳螂凶猛如____,____如妖魔,专食____的动物。
____A. Happy birthday!
____B. How old are you?
____C. How many plates?
____D. Here you are.
____E. Show me nine.
如果长方体的长为3a﹣4,宽为2a,高为a,则它的体积是( )