zoo/zu:/和moon/mu:n/的oo读音一样，都读/u:/音。
Is this the right way to the zoo ?去动物园是走这条路吗
Animals in zoos are not in their natural surroundings .动物园中的动物没有自然环境。
Crowds of visitors flock to zoos to observe the animals .大批游人涌向动物园去看动物。
Lionesses bearing cubs in the zoo is nothing new now .狮子在动物园繁殖早已屡见不鲜了。
The moon is a celestial body that does not glow by itself.
月球是一个自身不发光的天体。
