火箭军某旅技师鲍春寿，在本职岗位，因刻苦努力，多次立功，被晋升为一级军士长。他的成长告诉我们通向理想的道路只有一条，那就是（    ）

如图是检验呼出气体的实验装置，请根据你所学的知识和实验经验回答下列问题．

根据上下文内容填空。

cat    afraid      shadow    sees     plays     again     takes

      Kitty the cat is lovely. She ____ a walk in the morning. Then she ____ a black shape behind her. She thinks it's a big black ____. She is ____. She runs. The black shape runs too. She stops, the black shape stops too. She runs, the black shape runs ____. “Oh, it's my ____ !”Kitty says. At last, she is happy. She ____with her new friend together.

下列所示的四个图形中，∠1和∠2是同位角的是（ ）

一百零五____

一百零五万____

一百零五亿____