阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。
I like taking photos very much. Once I travelled by ship ____ a cloudy morning. It was in the afternoon____the weather turned fine. Therefore, I wanted to take some ____(photo). I was looking around and I saw next to me a lovely little girl sitting on her father's shoulders.____was lucky for me ____(meet) such a perfect moment—the girl was smiling and the surrounding view was beautiful. Without ____（think）, I took a picture of____little girl at that moment.
Her mother was____(surprise) that a stranger was photographing her daughter. I explained that I was moved by that sight and showed them the photo on my digital(数字的) camera. They loved it very much. I said I could email it to them when I got home.____ (Final), they gave me their email address. The next day, I ____(send) them their daughter's photo as I had promised.
nC(g)△H＞0生成物C的浓度随压强变化并建立平衡的关系图,则n值与压强p1、p2的关系正确的是 （ ）
