舟夜书所见

（清）查慎行

月黑见渔灯，孤光一点萤。

微微风簇浪，散作满河星。

1947年6月，____ 、____ 率军千里跃进大别山。

某超市对今年前两个季度每月销售总量进行统计，为了更清楚地看出销售总量的总趋势是上升还是下降，应选用____ 统计图来描述数据．

阅读理解。根据短文内容，判断正误。

    I have a good family. There are four people in my family. They are my father, my mother, my sister and I. My father is 40. He is a Chinese teacher. My mother is 38. She is an English teacher. They work in different schools. My sister's name is Li Fang. She is ten. We are in the same school, but in different grades. We have a nice picture of our family. It's on the wall. Look! Our father and mother are on the chair, and we two stand behind them.

已知（m-2）$x^2$-3x+1是关于x的一元二次方程，则m的取值范围是____ 。