根据所学课文内容填空(每空0.5分，共计7分) I am ___1__ of my sister but she has one serious ____2___ . She can be really __3__ . Although she didn’t know the best way of getting to places, she insisted that she _ _4__ _ the trip properly. Now I know that the proper way is always her way. I kept asking her, “When are we leaving and when are we ___5__ _ back?” I asked her whether she had looked at a map yet. Of course she hadn’t; my sister doesn’t care ___6_ _ details. So I told her that the 7  _ of the Mekong is in Qinghai Province. She gave me a ___8__ look-- the kind that said she would not change her mind. When I told her that our journey would begin 9 an altitude of more than 5,000 metres, she seemed to be excited about it. When I told her the air would be hard to _ __10_ _ and it would be very cold, she said it would be an interesting __ _11__ . I know my sister well. __ _12___ she has made up her __13_ _, nothing can change it. Finally, I had to give 14 .