若函数$f\left(x\right)=x^2+2\left(a-1\right)x+2$在区间$(-\infty ,4$上是减函数，则实数$a$的取值范围是(      )

A、拟人         B、比喻        C、排比

①他们有的捉螃蟹，有的捞海鱼，有的捡贝壳。____

②荷叶挨挨挤挤的，像一个个碧绿的大圆盘。____

③杨梅树伸展着四季常绿的枝条，一片片狭长的叶子在雨雾中欢笑着。____

— Liu Xiang won the 110-meter hurdling gold        at the 11^th National Games again.

— He is always a super star in my heart. Congratulations to him.

下列各组划线实词含义相同的一组是  （     ）