一、选出与其余两项不同类的一项。
() 1. A. skirt B. sweater C. size
() 2. A. cheap B. expensive C. hen
() 3. A. tomato B. ten C. potato
() 4. A. big B. cow C. duck
() 5. A. yours B. mine C. they
() 6. A. shorts B. short C. long
() 7. A. library B. playground C. computer
() 8. A. four B. first C. second
() 9. A. dinner B. lunch C. animal
() 10. A. sunny B. try C. rainy
() 11. A. music B. PE C. class
() 12. A. coat B. cold C. cool