增加:在缺词处加一个漏字符号(A),并在其下面写出该加的词。

删除:把多余的词用斜线()划掉。

修改:在错的词下画一横线,并在该词下面写出修改后的词

注意:1）每处错误及其修改均仅限一词;

2）只允许修改10处,多者(从第1处起)不计分。

    When I was young, I was terribly poor in the Chinese. Be afraid of expressing myself was one of the reasons why I rarely did well in school. Once I failed in a mid-term exam. When I got the papers, I realized things could have been better if I listened to the teacher much more attentive. So I turned to my teacher for helps and he told me, “Where there is a will, there is a way. If you are devoted to learn Chinese, you'll make it.” I couldn't agree much. From then on, I began to work harder. Out of my expect, I made great progress soon. Today, Chinese is which my strength lies. And I'm grateful for my Chinese teacher.

抛物线$y^2=2px\left(p>0\right)$的焦点为F，倾斜角为${60}^0$的直线l过点F且与抛物线的一个交点为A，$\left|AF\right|=3$，则抛物线的方程为(   )

如图，是关于x的不等式2x-a≤-1的解集，则a的取值是（　　）