有____根小棒，每____根摆1个 ，____有个 ，____÷____=____

    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). "

 李某因车祸不幸去世,留下房产和一笔存款,妻子、女儿、儿子、弟弟、岳母等提出遗产继承的要求。按照法定继承的原则,李某遗产的第一顺序继承人是　(　　)