阅读短文，根据短文内容及首字母提示，在空白处填入一个适当的单词．
People and animals live in the same world．We should keep the balance（平衡）（66）b___ people and animals．If the balance is destroyed，there will be bad result to both people and animals．Wild animals are friends of people．We have to （67）p___ them，or there will be no wild animals in the future．Now we know that there are （68）n___ 2，000nature reserves（自然保护区） in China
There is a black and white animal（ 69）l___in China．It is always known as the national treasure（国宝） of China．Everyone knows it is （70）c___Giant panda．Now there are （71）f___ pandas than before．Most of them live in Sichuan and Gansu Provinces．There are also some other rare animals in China．（72 ）H___，the （73）n___is becoming smaller and smaller than before．So people should try （74）t___ best to help these animals．They are in （75）d___of disappearing from the world．