Pandas are in ____ (濒危). There are only ____ (大约) 1,600 pandas in the wild today. Zoos and research ____ （中心） are looking after about 340 pandas. Pandas do not have many ____ (婴儿), and baby pandas often die. The ____ (形势) is getting very difficult. ____ (科学家) are doing a lot of research to help pandas ____ (生育) more children and help baby pandas live. In order to ____ （保护） pandas in the wild, the government is setting up ____ (自然) parks and ____(发展) other plans.