题干
将下列图片和句子配对。
① Where are my books? ____ A. I'm from Shanghai.
② Do you like apples? ____ B. No, I don't.
③ Where are you from, John?____ C. They are in your bag.
答案(点此获取答案解析）
C,B,A
面ABC，A、C两点的球面距离为
，B、C两点的球面距离为
，则A、B两点的球面距离为