增加：在缺词处加一个漏字符号（Λ），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。
My favorite inventor is Alexander Graham Bell. When he was a small kid, Bell started to show much interest helping deaf people communicate, so his mother was almost entirely deaf. This interest led to his invention of the microphone. Beside, he also invents the telephone in 1876. However, at the beginning, that he actually tried to design was not a telephone but a multiple telegraph. During his search to improve the telegraph, Bell invented the first telephone. One of his most famous saying is: “Leave the beaten track occasional and dive into the woods. Every time you do so you will be certain to find something which is completely new in your life.” Indeed, what it was his acute curiosity that made his success. Bell was an inventor all his life. He made his first invention at 11 but his last invention at 75.
