小军喜欢集邮，一天他在学校传达室发现一封信上有一张自己喜欢的邮票，便悄悄地把信拿走，撕下了邮票，并把信丢到了垃圾桶里。他的做法（　　）

①没有分清是非

②是个人的正当爱好，没有什么错误

③应该受到批评，因为他损害了他人的利益

④是违背道德和法律标准的

根据短文理解，完成下了各题。

Dear Tom,

    I go on a trip to Beijing with my father Rick. On the first day, we visit (参观) the Palace Museum. It is in the centre of Beijing. There are many rooms in it. You can see “No photos!” in some places. If so, you need to follow the instructions (指示). On the second day, we visit the Summer Palace. It's great fun to boat there. I can swim, so I'm not afraid of water. Tomorrow we will go to the Great Wall.

I also make a new friend Tony who comes from Australia. When he leaves, he gives me his e-mail address and telephone number. After the six-day trip, we can go back to New York by plane. I hope to see you soon.

Bill

写出下列单词的缩略形式。

Friday（缩略形式）____

题目《静夜思》的“思”字的意思是（       ）。