当今世界的人口问题，主要是由于人口增长____（过快、过慢）造成的。解决的措施主要有____。

下列符合低碳生活方式的是（　　）

读我国长江流域图，回答下列问题。

我们成年后还将建立自己的家庭，养育____，赡养____。一代接一代，绵延不断。

选择合适的单词补全短文。

teacher;   man;  girl;  father;  woman

    Look! This is my family. The old ____ is my grandpa. And this is my ____. He is a teacher. The ____ in red is my mother. She is a ____, too. Who's that ____? Guess! Haha, it's me.