小雯在铁路边玩，她的耳朵贴近铁轨，另一位同学在较远处敲了一下铁轨，小雯发现自己听到两次敲击声．请你解释一下这两次声音各是通过那种介质传来的，为什么会有前后两次敲击声？

    Most of us have probably1of Mickey Mouse, Donald Duck, and many other famous Disney characters. Perhaps we have even seen them in movies. But have you ever2to Disneyland? 3fact, there are now four4Disneyland amusement parks around the world. Two are in the United States, one is in Japan, and5 is in France.
    Disneyland is an amusement park, but we can 6call it a theme park. It has all the normal7that you can find at an amusement park, but it also has a theme. The theme, of course, is Disney movies and Disney characters. For example, you can find a roller coaster in most amusement parks, but in Disneyland, the8of the roller coaster is Disney characters. This means that you can find Disney characters all over the roller coaster. You can also 9Disney movies, eat in Disney restaurants, and buy Disney gifts. And you can see Disney characters 10around Disneyland all the time.

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：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。

Dear parents,

    The hardest time of my life is coming, and I know you are worry about my studies and my life. I can say nothing and thanks to you for the special occasion. Words failed me when I want to express my thanks to you for the care you showed me in the past few years. These days I have been studying hard and have performed to the best of my ability in the tests. I'll try your best to accomplish my assignment in the coming days.

    After the college entrance examination, I intend to helping you do some housework, that I have seldom done before. And I want to learn to cook in order to personal prepare a dinner for you both.

    My dear parents, everything is going well with me. do to relax!

    Love from,

    Your son