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. lakeB. forestB. villageB. skyB. computerC. kitchenC. flowerC. mountainC. treeC. doll 答案 1. B 2. A 3. B 4. C 5. A