题目内容：

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下短文。短文中共有10处错误，每句中最多有两处。错误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。

Last weekend,after pay a visit to the city of New York,I visited the Smithsonian Institutions National Air and Space Museum,where lies in Washington,D.C.

The museum,which covers a area of 18,000 square meters,is made of 24 exhibition halls.All kinds of planes, rockets,missiles and spaceship of great importance and variously old instruments that famous pilots and astronauts used are on display.In addition,I see copies of some satellites and aircraft.More interestingly,I tried operating on some aircraft by myself.During the visit,I took lots of pictures as well.

This brief visit helped myself learn much about the history of human's space exploration.It made me more interesting in science and technology.