阅读下列材料，回答问题：

材料一：“仁”者爱人。——孔子

材料二：罢黜百家，独尊儒术。——董仲舒

请回答：

阅读下面诗歌，回答问题。

桃花溪

【唐】张旭

   隐隐飞桥隔野烟，石矶①西畔问渔船。

桃花尽日流水，洞②在清溪何处边？

     【注解】①石矶：河流中露出的石堆。②洞：指《桃花源记》中武陵渔人找到的洞口。

如图，二次函数y=ax²+bx+c的图象交x轴于A、B两点，下列结论：

①abc＞0；②2a+b=0；③当m≠1时，a+b＞am²+bm；④a﹣b+c＞0；⑤若ax₁²+bx₁=ax₂²+bx₂，且x₁≠x₂，则x₁+x₂=2；⑥OA•OB=$\frac{c}{a}$；

其中正确的有（　　）

增加：在缺词处加一个漏词符号（∧），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：在错的词下划一横线，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11处起）不计分。

    Ladies and gentlemen,

    It's my honor to give a speech here. After-class activities play a important part in our school life. Proper activities help enrich our lives, broaden our horizons or develop our personalities.

    Mine own experience can serve as a case in point. When I was in Senior One, I become a member of our drama club, that I used to visit on weekends. Since my participation in various activities organizing by the club, I achieved a lot.

    These activities bring me a lot of funs, provide me with good opportunities to develop new friendships and open a window through which I have a brand-new outlook. With so much advantages shown above, why not to join us at once?