生物学研究方法有观察、调查、文献、实验等方法．其中，现代生物学研究的重要方法是____ ，而英国科学家珍妮在研究黑猩猩时发现黑猩猩能用草根从白蚁窝中钩出白蚁，珍妮的这种研究方法是____．珍妮进一步查找相关资料获取信息的方法是____ ．

    Mr. Brown works on a farm. Mr. Green works in a park. But they don't know each other. Today is Sunday. Mr. Brown comes to the park. He feels tired. He wants to have a little rest. He sees a red chair under a tree over there. So he walks to the chair. Mr. Green is behind him. Mr. Green runs to the chair with a board when he sees Mr. Brown come to the chair. But Mr. Brown runs faster（更快） than Mr. Green. Then he sits on the chair. Mr. Brown is very happy. But Mr. Green doesn't say anything. He gives the board（板子） in his hand to Mr. Brown. It says, "Wet Paint(油漆未干). "