. Lion: Want to have a fight, little dog? Dog: No. I don’t want to fight an animal that is ______extinction(灭绝). My master told me that we should protect endangered animals.
Stanford opened its doors in 1891 and more than a century later, it remains _____finding solutions to the great challenges of the day and to _______ its students for leadership in today’s complex world.
----In recent years, _____problem of global warming has become very serious. ----That’s right. People are facing _____diversity of natural disasters now.