从下列4个选项中,选择一个不同于其它3项的。(5分)
(1)A. apple. B. bird C. orange D. pear
(2)A.door B. window C. bed D. rubber
(3)A. cat B. pen C. ruler D. rubber
(4)A.thirteen B. fourteen C. lovely D. nineteen
(5)A.mango B. grape C. pineapple D. tiger