Look! The boys are ________ .But the girls run ________.A.slow; quickB.quick; slowC.slow; quicklyD.slowly; quickly
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C解析形容词有两种用法:(1)用在系动词后,如:be,feel,look(看起来),sound(听起来)等,作表语.(2)用在名词前作定语.如:a short ruler(一把短尺),a long river(一条长河)等;而副词通常用在实义动词后,修饰实义动词.如:walk slowly,speak loudly,play happily,do well等.