The biggest whale is blue whale, which grows to be about 29 meters long-the heig

 Thebiggest whale is ___ blue whale, which grows to be about 29 meters long—theheight of ___ 9-story building.   

A. the; the     B. a; a      C. a;the     D. the; a

试题答案

【答案】

 D

解析：第一空用the+n表示类别，是指blue whale 这一类动物；第二空用a表示泛指。