人类生存离不开能源．在煤炭、石油、太阳能、水能中，属于不可再生能源的是____ ；属于洁净能源的是____ ．自然界中，有些能源一旦消耗就很难再生，因此我们在发展生产、丰富人们物质生活的同时，还要注意____ 。

有关我国人口的叙述，错误的是（　　）

“$xy>0$”是“$\left|x+y\right|=\left|x\right|+\left|y\right|$”的（   ）

    Jodie doesn't like her job. She is a ____. She____to work in the evening. She has to work on____. She is always busy. She doesn't want to work in a restaurant. It's boring.

    She wants to be an ____. She likes to sing and dance. She likes to work ____ other young people. She wants to be in the pop play. She wants to be known by many people.

    ____ now she can only work in the restaurant. She is very unhappy every day.____ can she do? Can you help her?____a letter to her soon.