1. (2023九上·北京市月考)  完形填空

When I was in primary school, I enjoyed learning about interesting things. But one thing 1  me. I could never get a perfect mark on my math tests like some of the girls did. 

Every time I brought home my report card, before my mom read it, she could guess what the math score was — it had always been sitting just above 90. My mom even 2 about it. She said sweetly, "Could you bring home a perfect mark just once?"

One day I talked to my mom about this. She asked me to think about why this was so. I thought about it. After a lot of thinking, I understood what my problem was. 

"Mom, some questions are really simple. I know how to solve them right away. So I work them out fast. " "Oh?" Mom listened carefully. "Yes. They are so easy that I get 3 . And I make mistakes like copying my answer with an extra zero. And I don't check. "

"I see," Mom said. "When the questions are simple, you are not careful enough. So any mistake 4 you the perfect mark. "

She continued, "But I don't think copying an extra zero is a 5 mistake. If you're calculating (计算) a number of a spaceship, extra zero may cause a total failure of the launch (发射). "

"I see. I'll try to be fast and careful, too. " Our 6 continued. "How about the difficult questions?" asked Mom.

"I tried to solve them, but they are hard. "

Mom laughed, "Difficult questions take a long time to solve. The first thing you have to do is to understand the question. Then you do your best to solve it. And you never give up easily, right?"

Mom's 7 made it really easy. I could hardly 8 until the next math exam.

You know what? A few weeks later, I did finally get a perfect mark!