问题 选择题 请选出每组单词中不同类的那一个，将其序号写在括号中。( ) 1. A. library ( ) 2. A. post card ( ) 3. A. singer ( ) 4. A. sun ( ) 5. A. train B. apple B. newspaper B. artist B. cloud B. elephant C. cinema C. hamburger C. bike C. yellow C. plane 答案 答案：A
