The answer of synchronous reading in the fifth grade of primary school

The answer of synchronous reading in the fifth grade of primary school

Classmate, I'm also from the past. I know how good it is to have an answer, but it's better to do it first. If you can't do it or look at the answer after you finish it, the efficiency will be greatly increased and the memory will be enhanced. So I think you should do it yourself first. If you encounter difficulties, you can find me. I'm usually online