下列说法中正确的是（）

 如图是人体与外部环境之间的物质交换模式图，图中的序号代表着人体的某些生理过程，据图回答下列问题．

2的倍数的牌子是____(按题中牌子的顺序，填牌子上的数)

增加：在缺词处加一个漏字符号（∧），并在此符号下面写出该加的词。

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。

    Are you afraid of delivering a speech before people?I can well remember his first speech which was titled A Real Test in My Life at the age of 9!You can't imagine how terrible shy I was the moment I thought of that—with so many eyes fixed in me.I have no choice but prepare for it,though.When a real moment came,I stood on the platform with my legs trembled and my mind blank.Although it was hard for me to find myself back,but I made it!From then on,I gradually turned out to be a great speakers without any fear of talking.