My father, Yang Liwei, is a ____, and he is very ____. In October 2003, my father ____ (fly) into space in Shenzhou V. He ____ (spend) about twenty-one hours in space. He ____ (do) a lot of work there. He ____ (make) a video. Then he ____ (come) back to the earth. My mother and I ____ (go) to the airport to meet my father.

We ____ very happy. It was a great day! I____(be) very ____ of ____(he). Now he still ____ (tell) me his space travel. I want ____ (go) into space someday too.

称取NaCl和BaCl₂的固体混合物32.5g，加入100g蒸馏水，完全溶解后向该混合溶液中逐滴加入质量分数为10%的Na₂SO₄溶液，反应生成BaSO₄沉淀的质量与所加入的Na₂SO₄溶液的质量关系如图所示．试回答下列问题：

材料一：情感是与人的高级需要是否得到满足相联系的内心感受和体验，是比较稳定、深刻的内心体验。

材料二：国庆节前夕,某校为庆祝祖国的生日，组织了红歌会演唱比赛。七年级（2）班经过集体商讨,确定参赛曲目为《我的中国心》。