下列每组单词中有一个与所给单词不同类,将序号填入题前括号内。 (1)autumn A. summer B. season C. winter (2)Monday A. day B. Tuesday C. Friday (3)cloud A. rainy B. snow C. wind (4)heavier A. older B. young C. stronger (5)headache A. feel B. cough C. cold (6)piano A. guitar B. blouse C. violin