从team.txt中读取参赛队伍的基本信息，能够管理各参赛队的基本信息（包含参赛队编号，参赛作品名称，参赛学校，赛事类别，参赛者，指导老师），赛事类别共11项（参见大赛官网jsjds.blcu.edu.cn）；包括增加、删除、修改参赛队伍的信息。 （2）实现基于二叉排序树的查找。根据提示输入参赛队编号，若查找成功，输出该赛事类别对应的基本信息（参赛作品名称、参赛学校、赛事类别、参赛者和指导老师信息），同时，输出查找成功时的平均查找长度ASL；否则，输出“查找失败！”。

实现这个功能需要以下步骤：

1. 从team.txt中读取参赛队伍的基本信息，存储到二叉排序树中。

2. 实现增加、删除、修改参赛队伍信息的函数。

3. 实现基于二叉排序树的查找函数。

4. 根据输入的参赛队编号，调用查找函数进行查找，输出查找结果。

以下是示例代码：

class Team:
    def __init__(self, team_id, name, school, category, members, teachers):
        self.team_id = team_id
        self.name = name
        self.school = school
        self.category = category
        self.members = members
        self.teachers = teachers

class TreeNode:
    def __init__(self, team):
        self.team = team
        self.left = None
        self.right = None

class TeamManager:
    def __init__(self):
        self.root = None
        self.total_length = 0
        self.total_count = 0

    def add_team(self, team):
        if not self.root:
            self.root = TreeNode(team)
        else:
            self._add_team(self.root, team)

    def _add_team(self, node, team):
        if team.team_id < node.team.team_id:
            if not node.left:
                node.left = TreeNode(team)
            else:
                self._add_team(node.left, team)
        elif team.team_id > node.team.team_id:
            if not node.right:
                node.right = TreeNode(team)
            else:
                self._add_team(node.right, team)

    def delete_team(self, team_id):
        self.root = self._delete_team(self.root, team_id)

    def _delete_team(self, node, team_id):
        if not node:
            return None
        if team_id < node.team.team_id:
            node.left = self._delete_team(node.left, team_id)
        elif team_id > node.team.team_id:
            node.right = self._delete_team(node.right, team_id)
        else:
            if not node.left:
                return node.right
            elif not node.right:
                return node.left
            else:
                min_node = self._find_min(node.right)
                node.team = min_node.team
                node.right = self._delete_team(node.right, min_node.team.team_id)
        return node

    def _find_min(self, node):
        while node.left:
            node = node.left
        return node

    def modify_team(self, team):
        self.delete_team(team.team_id)
        self.add_team(team)

    def find_team(self, team_id):
        self.total_length = 0
        self.total_count = 0
        node = self._find_team(self.root, team_id)
        if node:
            print("参赛作品名称：", node.team.name)
            print("参赛学校：", node.team.school)
            print("赛事类别：", node.team.category)
            print("参赛者：", node.team.members)
            print("指导老师：", node.team.teachers)
            print("平均查找长度ASL：", self.total_length / self.total_count)
        else:
            print("查找失败！")

    def _find_team(self, node, team_id):
        if not node:
            return None
        self.total_length += 1
        self.total_count += 1
        if team_id == node.team.team_id:
            return node
        elif team_id < node.team.team_id:
            return self._find_team(node.left, team_id)
        else:
            return self._find_team(node.right, team_id)

teams = TeamManager()

# 从team.txt中读取参赛队伍的基本信息，存储到二叉排序树中
with open('team.txt', 'r') as f:
    for line in f:
        team_info = line.split()
        team_id = int(team_info[0])
        name = team_info[1]
        school = team_info[2]
        category = team_info[3]
        members = team_info[4]
        teachers = team_info[5]
        team = Team(team_id, name, school, category, members, teachers)
        teams.add_team(team)

# 调用增加、删除、修改参赛队伍信息的函数
team = Team(12, '作品名称', '学校', '赛事类别', '参赛者', '指导老师')
teams.add_team(team)
teams.delete_team(12)
team = Team(13, '作品名称', '学校', '赛事类别', '参赛者', '指导老师')
teams.modify_team(team)

# 根据输入的参赛队编号，调用查找函数进行查找，输出查找结果
teams.find_team(1)

以上代码实现了从team.txt中读取参赛队伍的基本信息，并存储到二叉排序树中。同时，实现了增加、删除、修改参赛队伍信息的函数，以及基于二叉排序树的查找函数。最后，根据输入的参赛队编号，调用查找函数进行查找，并输出查找结果。