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?

—Cool!

短周期元素组成的物质Q，发生如下反应：QR+T+H₂O，下列说法正确的是（　　）