一个细菌或真菌繁殖后形成的肉眼可见的集合体称为____．

    Helen Keller lived in the USA. When she was a baby, she got very sick. After she was better, she couldn't and hear well. A few years later, things got worse. There was no way for Helen to speak to other people. She heard nothing. She saw nothing. She didn't understand anything.

    One day a teacher came to live with Helen and her family. The teacher helped Helen learn about words. Helen was such a bright girl that she could spell her first word soon. When she was older, she went to college.

    Helen became very famous later. She traveled around the world and helped many blind and deaf people. The world remembers her today as a brave and wonderful person. She was blind and deaf, but she found a way to see and hear.

文中共有10处语文错误，每句中最多有两处。错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

删除：在错的词下面一横线，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。

    Last Sunday, I showed Tom, the friend from the USA, around the city. This was the first time that Tom visited my hometown, and he found the trip excited.

Early in the morning, I took her to the park near my home. He was astonished to seeing so many people did exercise in the park. Then, we went to the museum. From the exhibitions, he learned a lot at the history of the city. After leaving the museum, we went downtown and found it was crowded with quite a lot of building. On our way to home, Tom said he was really amazed by that he found. But he hoped that he would have chances to come here again.