阅读理解。

    Aunt Judy's birthday is coming. She will be 38 years old. Dad and Mum are going to take me to her house. She lives in Guangzhou. We are going to go there by train. Her birthday party will be on Saturday. We are leaving on Friday afternoon. And we are coming back on Sunday evening. I am going to give my dear Aunt Judy a picture . I am drawing it now. I am drawing some beautiful flowers. I am drawing a small dog, too. That's because she likes dogs. The picture will be very nice.

长江、黄河共性特征叙述错误的是（    ）

看图填空。

480×0.32=（       ____        ），0.48×3.2=（      ____        ）

小帆在练习使用弹簧测力计测物体重力时，她先将测力计竖直放置，反复几次轻拉挂钩后，测力计的指针位置如图甲所示．