选出一个与其它三个不属于同一类的单词,并将序号填入题前的括号里。
（1）A. twenty       B. eight         C. four        D. too
（2）A. yellow       B. ruler         C. green       D. purple
（3）A. thin         B. sports        C. strong      D. quiet
（4）A. apple        B. vegetable     C. pear        D. orange
（5）A. cake         B. car           C. bike        D. plane
（6）A. crayon       B. sharpener     C. pen         D. picture
（7）A. spoon        B. sofa          C. fork        D. plate
（8）A. brother      B.uncle          C. aunt         D. teacher