选出下列各组单词中不属于同类的一项,将序号填入括号内。 ( ) 1. A. cousin B. danger C. aunt D. grandma ( ) 2. A. grass B. tree C. flower D. bird ( ) 3. A. second B. three C. fourth D. fifth ( ) 4. A. October B. May C. January D. Wednesday ( ) 5. A. remember B. camera C. Walkman D. radio ( ) 6. A. pick B. beach C. farm D. camp ( ) 7. A. relative B. delicious C. favourite D. popular ( ) 8. A. mine B. your C. hers D. theirs ( ) 9. A. visited B. got C. went D. did ( ) 10. A. wallet B. comb C. sunny D. teapot