由8个千万和3个十万组成的数是____。

学会与老师交往

    最近，对于八年级的李军来说是漫长而难熬的。妈妈生病住院了，他在家里既要做饭做家务，又要照顾年幼的弟弟，还要抽空去医院陪妈妈，往往连作业也顾不上写。期中考试结束了，李军知道自己考得不理想，但心里很想尽早知道自己的成绩。犹豫再三，他还是来到了班主任刘老师的办公室。李军说：“老师，我这次考试的成绩怎样？”刘老师说：“平时不好好用功，现在还有脸问我？”

根据短文理解，选择正确答案。

    At thirteen, I was diagnosed（诊断） with kind of attention disorder. It made school difficult for me. When everyone else in the class was focusing on tasks, I could not.

    In my first literature class, Mrs. Smith asked us to read a story and then write on it, all within 45 minutes. I raised my hand right away and said, “Mrs. Smith, you see, the doctor said I have attention problems. I might not be able to do it.”

    She glanced down at me through her glasses, “You are not different from your classmates, young man.”

    I tried, but I didn't finish the reading when the bell rang. I had to take it home. In the quietness of my bedroom, the story suddenly all became clear to me. It was about a blind person, Louis Braille. He lived in a time when the blind couldn't get much education. But Louis didn't give up. Instead, he invented a reading system of raised dots（点）, which opened up a whole new world of knowledge to the blind.

    Wasn't I the “blind” in my class, being made to learn like the “sighted” students? My thoughts spilled out and my pen started to dance. I completed the task within 40 minutes. Indeed, I was no different from others; I just needed a quieter place. If Louis could find his way out of his problems, why should I ever give up?

    I didn't expect anything when I handled in my paper to Mrs. Smith, so it was quite a surprise when it came back to me the next day- with an “A” on it. At the bottom of the paper were these words: “See what you can do when you keep trying?”