阅读文言文，回答问题

许仲平义不苟取

    许衡字仲平，怀之河内人也。尝暑中过河阳，渴甚，道有梨，众争取啖之，衡独危坐树下自若。或问之，曰：“非其有而取之，不可也。”人曰：“世乱，此无主。”曰：“梨无主，吾心独无主乎？”

如图，在某装置中有一匀强磁场，磁感应强度为B，方向垂直于xOy所在纸面向外．

某时刻在x＝l₀、y＝0处，一质子沿y轴负方向进入磁场；同一时刻，在x＝－l₀、y＝0处，一个α粒子进入磁场，速度方向与磁场垂直．不考虑质子与α粒子的相互作用，设质子的质量为m，电荷量为e.则：

函数$f\left(x\right)=\frac{ax+b}{1+x^2}$是定义在（﹣1，1）上的奇函数，且$f\left(\frac{1}{2}\right)=\frac{2}{5}$．

（1）确定函数的解析式；

（2）证明函数f（x）在（﹣1，1）上是增函数；

（3）解不等式f（t﹣1）+f（t）＜0．

    Three years ago, when I entered my school for the first time, I was welcomed by students wearing white shirts with a badge (徽章) saying “Prefect” on them, who greeted me with the1“Welcome to Huaxia Middle School”. I was immediately impressed and2 I could be one of them. Then next year, in the summer of 2016, my wish3 when I was selected to be a prefect. Just like the ones4 me, I was to stand at the school gate and 5 new freshmen.

    So, you may wonder, what 6 is a prefect? Prefects are student leaders in our school. They're usually top students7 from higher grades to help teachers run the school 8 of the classroom9 you're chosen to be a prefect, you need to be a nearly perfect student. Becoming a prefect wasn't10 for me. I used to be sensitive and 11 caring too much about what others thought of me. But since I was12 to become a prefect, I tried my best to be more brave and hardworking, making rapid13in a year.

    The biggest benefit of being a prefect is that it teaches me to be14 and set an example for lower grade students. I was a member of the school soccer team, but I wasn't a good 15 and felt embarrassed about my poor 16. After having some students from lower grades join our team, however, I knew that I had to set a good example. So, I kept practicing my skills and 17 greatly.

    Being a prefect doesn't 18 mean I have a badge on my shirt. It also means that I have a hardworking attitude deep in my19“You can make it,” I always remind myself. Becoming a prefect has20 me to work harder and become an even better person.

给划线字注音，根据拼音写汉字。

诘（）难    咬文嚼（）宇    chī（）笑    kè（）尽职守