找出下列各组词中不同类的单词。( ) (1) A. a hat B. a hot dog C. a vest ( ) (2)A. brown B. belt C. red ( ) (3) A. a pie B. a vest C. a hot dog ( ) (4) A. trousers B. pears C. shoes ( ) (5) A. a kitchen B. a study C. a camera
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