Nowadays, many countries are looking for ____ (renewable/renew) energy to protect the environment.
What about ____ (go) to the Great Wall for our summer holiday?
小球在如图所示的地板上自由地滚动,并随机地停留在某块方砖上,那么小球最终停留在黑色区域的概率是 ____.
下列函数中,属于反比例函数的是( )