N_A表示阿伏加德罗常数的值．下列说法中正确的有几项（   ）

①1mol铁与1molCl₂充分反应，转移电子数为3N_A

②常温常压下，2gD₂¹⁶O中含中子数、质子数、电子数均不相等

③等质量的N₂和CO所含分子数均为N_A

④过氧化钠与水反应时，生成0.5molO₂转移的电子数为2N_A

⑤在含A1³⁺总数为N_A的AlC1₃溶液中，Cl^﹣总数大于3N_A

⑥一定温度下，1mol•L^﹣1的CH₃COONa溶液含N_A个CH₃COO^﹣．

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.

为了方便盲人行走，在马路两旁的人行道上设置有凸棱的盲道。小明在盲道上走路很不舒服，原因是在盲道上，脚与地面的____减少，从而增大____。