1 . Photographer Joe Sartore began making studio portraits (肖像) of________in 2006. The purpose is to________for future generations species that someday might be extinct. Sartore expects to have portraits of nearly 1,000 animals. Here are some________of his project, which is featured in this special issue on________wildlife.

In Sartore’s opinion, the Rabbs’ fringe-limbed tree frog (巴拿马树蛙) is one of the most________species he has photographed that have since gone________. A few years ago there was one left________, a male, at the Atlanta Botanical Garden. He had________it there times before it passed away. At those moments he thought to himself________, “Don’t mess this up.” It might be this animal’s only________to have its story told well.

Another memorable species Sartore photographed is the Florida grasshopper sparrow (草蜢沙鹀). It is endangered, but seems to be________back. It’s a small brown bird, and some people________it enough to try to save it. There are many________stories, such as the California condor, the Mexican gray wolf, sand so on. They all got down to perhaps two dozen or fewer individuals, but they’re all________now due to human efforts.

The situation is still________as a recent report says that as many as one million species are already on their ________to extinction. It’s foolish to think that we can throw away so much________and not have it affect humanity in a(n)________way. Sartore’s goal is to get the________to care about the extinction crisis while there’s still________to save the planet.