问题 选择题
选出下列每组单词中与所给单词同类的一项。
( ) 1. river  
( ) 2. building
( ) 3. city
( ) 4. grass
( ) 5. picture
A. farm 
A. house
A. bridge   
A. class
A. photo
B. lake
B. forest
B. village
B. sky
B. computer
C. kitchen
C. flower
C. mountain
C. tree
C. doll
答案

1. B  2. A  3. B  4. C  5. A

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