从分散隔绝到联系紧密，今天的我们都生活在“地球村”。

①促成世界开始连成一个整体的重大历史事件是____。

②第二次工业革命中，____的发明使人类真正进入了航空时代．

③当今世界最大的国际政治组织是____。

阅读短文，选择正确的答案。

    Mrs. Jones was a teacher. Her house was not far from her school, and she often walked there in the morning. All the students in the school were very young.

    One cold and windy morning in October, Mrs.Jones walked to school. The cold wind went into her eyes and big tears（泪）began to run out of them. She reached (到达) the school, opened the door and went into the classroom.

    It was nice and warm there and Mrs. Jones was happy. But then a small boy looked at her for a while, put his arms a round her and said (说):"Don't cry, Mrs. Jones. School isn't very bad. "

—                           ?

— She is my grandmother.