读单词,找出不同类的一项。
①____ A. hand B. ten C. two
②____ A. fish B. five C. foot
③____ A. eight B. eye C. seven
④____ A. juice B. milk C. nine
下列事例中,属于通过增大压力来增大摩擦的是 ( )
I hurried to school without ________ breakfast.