15 My first day observing a community of forest chim-panzees showed me a richer and more satisfying world than I had imagined. I suddenly recognized why I, a non-scientist, or anyone should care about what happens to them: not, ultimately, because they use tools and solve 20 problems and are intellectual beings, but because they are emotional beings, as we are, and because their emotions are so obviously similar to ours.
I was moved by the play，the adult male chasing a toddler round and round a tree, the mother nibbling 25 her babys toes and looking blissful, the three females playing with and adoring a single infant. They feel!
That was my discovery.
9. Both passages support which generalization about wild chimpanzees?
Their family structures are somewhat similar to those of humans.
Their behavior often resembles that of humans.
Their actions are prompted by strong psychological urges.
Their facial expressions can be interpreted accurately by nonspecialists.
Their reactions differ from those of other apes.
10. The primary purpose of passage 2 is to
describe a typical days work on a scientific project
report details about an attempt to train wild chimpanzees
propose an alternative method of studying animal behavior