diff --git a/src/LoginScreen.py b/src/LoginScreen.py
new file mode 100644
index 0000000..fbded1f
--- /dev/null
+++ b/src/LoginScreen.py
@@ -0,0 +1,101 @@
+import tkinter
+
+from tkinter import *
+import tkinter.messagebox
+from AdScreen import AdSc
+from StuScreen import StuSc
+
+import pymysql
+
+
+class LoginScreen:
+    def __init__(self, master):
+        self.root = master
+        self.root.title('在线考试系统')
+
+        self.root.geometry('800x260')
+
+        self.window = Frame(self.root)
+        self.window.pack()
+        # Label(self.window)
+        # Label(self.window, text=
+
+
+        # '在线考试系统', font=('宋体', 25)).
+        # grid(row=0, column=1, padx=15, pady=15)
+        # Label(self.window, text='请输入账号： ', font=('宋体', 15)).grid(row=1, column=0, padx=15, pady=15)
+        Label(self.window)
+        Label(self.window, text='在线考试系统', font=('宋体', 25)).grid(row=0, column=1, padx=15, pady=15)
+
+        Label(self.window, text='请输入账号： ', font=('宋体', 15)).grid(row=1, column=0, padx=15, pady=15)
+
+        self.UserAccountInput = Entry(self.window)
+
+        self.UserAccountInput.grid(row=1, column=3, padx=15, pady=15)
+
+        Label(self.window, text='请输入密码： ', font=('宋体', 15)).grid(row=2, column=0, padx=15, pady=15)
+
+        self.UserPasswordInput = Entry(self.window, show='*')
+
+        self.UserPasswordInput.grid(row=2, column=3, padx=15, pady=15)
+
+        Button(self.window, text='登陆', width=20, command=self.login,font=('宋体', 15)).grid(row=3, column=1, padx=15, pady=15)
+
+    def login(self):
+        a = self.UserAccountInput.get()
+
+        b = self.UserPasswordInput.get()
+
+        conn = pymysql.connect(host='localhost', user='root', password='123456', db='ruangong', charset='utf8')
+
+        cur = conn.cursor()
+        if a[0] == '1':
+
+            search_sqi = "select AdPassword from admini where AdID=\""+a+"\";"
+            cur.execute(search_sqi)
+            info = cur.fetchone()
+            if info is None:
+
+                tkinter.messagebox.showerror(title='警告！', message='暂无该用户名！')
+
+            elif b == info[0]:
+
+                self.window.destroy()
+                AdSc(self.root, a)
+            else:
+                tkinter.messagebox.showerror(title='警告！', message='用户名或密码错误！')
+
+        else:
+            search_sqi = "select studentPassword from student where studentId=\""+a+"\";"
+            cur.execute(search_sqi)
+            info = cur.fetchone()
+
+            if info is None:
+                tkinter.messagebox.showerror(title='警告！', message='暂无该用户名！')
+            elif b == info[0]:
+
+                self.window.destroy()
+
+                StuSc(self.root, a)
+            # else:
+            #     tkinter.messagebox.showerror(title='警告！', message='用户名或密码错误！')
+
+            #     if info is None:
+
+            #         tkinter.messagebox.showerror(title='警告！', message='暂无该用户名！')
+            #     elif b == info[0]:
+
+            #         self.window.destroy()
+            #         StuSc(self.root, a)
+            #     else:
+            #         tkinter.messagebox.showerror(title='警告！', message='用户名或密码错误！')
+        cur.close()
+
+        conn.close()
+
+
+if __name__ == '__main__':
+    window = Tk()
+    LoginScreen(window)
+    window.mainloop()
+
diff --git a/src/StuScreen.py b/src/StuScreen.py
new file mode 100644
index 0000000..1a1b961
--- /dev/null
+++ b/src/StuScreen.py
@@ -0,0 +1,597 @@
+import tkinter
+from tkinter import *
+from tkinter import messagebox
+from tkinter.messagebox import *
+from tkinter.ttk import Treeview
+import random
+import pymysql
+import time
+
+
+class StuSc:
+    def __init__(self, master, no):
+
+        self.window1 = None
+        self.course_array = []
+
+        self.exam_array = []
+        self.id = no
+
+        self.flag = 0
+        self.que_no = 1
+        self.root = master
+        self.root.geometry('1100x500')
+        self.root.title('考生主页')
+
+        self.window = Frame(self.root)
+        self.window.pack()
+        self.main_menu = Menu(self.window)
+
+        self.main_menu.add_cascade(label="考试", command=self.show_course)
+
+        self.main_menu.add_command(label="查询成绩", command=self.sel_score)
+
+        self.main_menu.add_command(label="修改密码", command=self.chan_pw)
+
+        self.main_menu.add_command(label="发送留言", command=self.SendM)
+        self.UserOldInput = Entry(self.window)
+
+        self.UserNewInput = Entry(self.window, show='*')
+
+        self.root.config(menu=self.main_menu)
+
+    def show_course(self):
+        if self.flag == 1:
+            messagebox.showerror(title='警告', message='请专注于当前考试')
+
+        else:
+            self.window.pack_forget()
+            self.window = Frame(self.root)
+            self.window.pack()
+
+
+        # 点击 考试列表 时单击响应
+            def on_click_exam_list_tree(event):
+                if self.flag == 1:
+                    messagebox.showerror(title='警告', message='请专注于当前考试')
+
+                else:
+                    selected_item = event.widget.selection()
+                    exam_id = self.exam_array[int(selected_item[0]) - 1][0]
+                    ask = askyesno(title="考试提醒", message="是否确定进入?", )
+
+                    if ask:
+                        self.flag = 1
+                        timestamp = int(time.time())
+                        time_local = time.localtime(timestamp)
+
+                        timetable = time.strftime("%Y-%m-%d %H:%M:%S", time_local)
+                        self.Exam(exam_id, timetable)
+
+
+            # 点击 课程列表 时的单击响应函数
+
+            def on_click_course_list_tree(event):
+
+                if self.flag == 1:
+                    messagebox.showerror(title='警告', message='请专注于当前考试')
+                else:
+
+
+                    selected_item = event.widget.selection()  # event.widget获取Treeview对象，调用selection获取选择对象名称
+                    # 清空exam_select_tree上现有的内容
+                    # 清空exam_select_tree上现有的内容
+                    exam_select_tree.delete(*exam_select_tree.get_children())
+                    course_name = self.course_array[int(selected_item[0])-1][1]
+                    ad_id = self.course_array[int(selected_item[0])-1][2]
+
+
+                    conn1 = pymysql.connect(host='localhost', user='root', password='123456', db='ruangong', charset='utf8')
+                    cur1 = conn1.cursor()
+                    search_sqi1 = "select ExamID,ExamName from examnation,Course where CourseName=\""+course_name + \
+                                  "\" and examnation.AdID=\"" + ad_id + "\"and examnation.CourseID=Course.CourseID;"
+                    cur1.execute(search_sqi1)
+                    j = 1
+
+                    for row1 in cur1:
+                        exam_select_tree.insert("", 'end', str(j), text='', values=row1)
+                        j = j+1
+                        self.exam_array.append(row1)
+                    exam_select_tree.update_idletasks()
+                    cur1.close()
+                    conn1.close()
+
+            main_panedwindow = PanedWindow(self.window, sashrelief=RAISED, sashwidth=5, orient=VERTICAL)
+
+            # 课程列表区
+            course_list_frame = Frame()
+            course_list_sub_frame = Frame(course_list_frame)
+            course_list_tree = Treeview(course_list_sub_frame, selectmode='browse')
+            course_list_tree.bind('<<TreeviewSelect>>', on_click_course_list_tree)
+
+            # 课程列表垂直滚动条
+            course_list_vsc = Scrollbar(course_list_sub_frame, orient="vertical", command=course_list_tree.yview)
+            course_list_vsc.pack(side=RIGHT, fill=Y, expand=YES)
+            course_list_tree.configure(yscrollcommand=course_list_vsc.set)
+            course_list_sub_frame.pack(side=TOP, fill=BOTH, expand=YES)
+
+            # 课程列表水平滚动条
+            course_list_hsc = Scrollbar(course_list_frame, orient="horizontal", command=course_list_tree.xview)
+            course_list_hsc.pack(side=BOTTOM, fill=X, expand=YES)
+            course_list_tree.configure(xscrollcommand=course_list_hsc.set)
+
+            # 课程列表区列标题
+            course_list_tree["columns"] = ("CourseID", "CourseName", "AdID")
+            course_list_column_width = [333, 333, 333]
+
+            course_list_tree['show'] = 'headings'
+            # 载入列标题
+
+            for column_name, column_width in zip(course_list_tree["columns"], course_list_column_width):
+                course_list_tree.column(column_name, width=column_width, anchor='w')
+                course_list_tree.heading(column_name, text=column_name)
+
+            course_list_tree.pack(side=LEFT, fill=X, expand=YES)
+            course_list_frame.pack(side=TOP, fill=X, padx=5, pady=5, expand=YES, anchor='n')
+
+            # 将数据包列表区加入到主窗体
+            main_panedwindow.add(course_list_frame)
+            conn = pymysql.connect(host='localhost', user='root', password='123456', db='ruangong', charset='utf8')
+            cur = conn.cursor()
+            search_sqi = "select * from Course;"
+            cur.execute(search_sqi
+                        )
+            i = 1
+
+            for row in cur:
+                course_list_tree.insert("", "end", str(i), values=row)
+                i = i + 1
+                self.course_array.append(row)
+            course_list_tree.update_idletasks()
+            cur.close()
+            conn.close()
+
+            # 考试选择区
+            exam_select_frame = Frame()
+            exam_select_sub_frame = Frame(exam_select_frame)
+            exam_select_tree = Treeview(exam_select_sub_frame, selectmode='browse')
+            exam_select_tree.bind('<<TreeviewSelect>>', on_click_exam_list_tree)
+            exam_select_tree.pack(side=LEFT, fill=BOTH, expand=YES)
+
+            # 考试选择区垂直滚动条
+            exam_select_vsc = Scrollbar(exam_select_sub_frame, orient="vertical", command=exam_select_tree.yview)
+            exam_select_vsc.pack(side=RIGHT, fill=Y)
+            exam_select_tree.configure(yscrollcommand=exam_select_vsc.set)
+            exam_select_sub_frame.pack(side=TOP, fill=X, expand=YES)
+
+            # 考试选择区水平滚动条
+            exam_select_hsc = Scrollbar(exam_select_frame, orient="horizontal", command=exam_select_tree.xview)
+            exam_select_hsc.pack(side=BOTTOM, fill=X)
+            exam_select_tree.configure(xscrollcommand=exam_select_hsc.set)
+            exam_select_frame.pack(side=LEFT, fill=X, padx=5, pady=5, expand=YES)
+
+            # 载入列标题
+            exam_select_tree["columns"] = ("ExamID", "ExamName")
+            exam_select_column_width = [500, 500]
+            exam_select_tree['show'] = 'headings'
+            for column_name, column_width in zip(exam_select_tree["columns"], exam_select_column_width):
+                exam_select_tree.column(column_name, width=column_width, anchor='w')
+                exam_select_tree.heading(column_name, text=column_name)
+            exam_select_tree.pack(side=LEFT, fill=X, expand=YES)
+            exam_select_frame.pack(side=TOP, fill=X, padx=5, pady=5, expand=YES, anchor='n')
+
+            # 将考试列表区加入到主窗体
+            main_panedwindow.add(exam_select_frame)
+            main_panedwindow.pack(fill=BOTH, expand=1)
+
+    def sel_score(self):
+        if self.flag == 1:
+            messagebox.showerror(title='警告', message='请专注于当前考试')
+        else:
+            self.window.pack_forget()
+            self.window = Frame(self.root)
+            self.window.pack()
+            main_panedwindow = PanedWindow(self.window, sashrelief=RAISED, sashwidth=5, orient=VERTICAL)
+
+            # 课程列表区
+            score_list_frame = Frame()
+            score_list_sub_frame = Frame(score_list_frame)
+            score_list_tree = Treeview(score_list_sub_frame, selectmode='browse')
+
+            # # 课程列表垂直滚动条
+            # score_list_vsc = Scrollbar(score_list_sub_frame, orient="vertical", command=score_list_tree.yview)
+            # score_list_vsc.pack(side=RIGHT, fill=Y, expand=YES)
+            # score_list_tree.configure(yscrollcommand=score_list_vsc.set)
+            # score_list_sub_frame.pack(side=TOP, fill=BOTH, expand=YES)
+            #
+            # # 课程列表水平滚动条
+            # score_list_hsc = Scrollbar(score_list_frame, orient="horizontal", command=score_list_tree.xview)
+            # score_list_hsc.pack(side=BOTTOM, fill=X, expand=YES)
+            # score_list_tree.configure(xscrollcommand=score_list_hsc.set)
+
+            # 课程列表垂直滚动条
+            score_list_vsc = Scrollbar(score_list_sub_frame, orient="vertical", command=score_list_tree.yview)
+            score_list_vsc.pack(side=RIGHT, fill=Y, expand=YES)
+            score_list_tree.configure(yscrollcommand=score_list_vsc.set)
+            score_list_sub_frame.pack(side=TOP, fill=BOTH, expand=YES)
+
+            # 课程列表水平滚动条
+            score_list_hsc = Scrollbar(score_list_frame, orient="horizontal", command=score_list_tree.xview)
+            score_list_hsc.pack(side=BOTTOM, fill=X, expand=YES)
+            score_list_tree.configure(xscrollcommand=score_list_hsc.set)
+
+            # 课程列表区列标题
+            score_list_tree["columns"] = ('ExamName', 'Grade', 'beginTime', 'endTime')
+            score_list_column_width = [250, 250, 250, 250]
+            score_list_tree['show'] = 'headings'
+
+            # 载入列标题
+            for column_name, column_width in zip(score_list_tree["columns"], score_list_column_width):
+                score_list_tree.column(column_name, width=column_width, anchor='w')
+                score_list_tree.heading(column_name, text=column_name)
+            score_list_tree.pack(side=LEFT, fill=X, expand=YES)
+            score_list_frame.pack(side=TOP, fill=X, padx=5, pady=5, expand=YES, anchor='n')
+
+            # 将数据包列表区加入到主窗体
+            main_panedwindow.add(score_list_frame)
+            main_panedwindow.pack(fill=BOTH, expand=1)
+            conn = pymysql.connect(host='localhost', user='root', password='123456', db='ruangong', charset='utf8')
+            cur = conn.cursor()
+            search_sqi = "select ExamName,grade,beginTime,endTime from studentscore where " \
+                         "studentId=\"" + self.id + "\";"
+            cur.execute(search_sqi)
+            i = 1
+            for row in cur:
+                score_list_tree.insert("", "end", str(i), values=row)
+                i = i + 1
+            score_list_tree.update_idletasks()
+            cur.close()
+            conn.close()
+
+    def chan_pw(self):
+        if self.flag == 1:
+            messagebox.showerror(title='警告', message='请专注于当前考试')
+        else:
+            self.window.pack_forget()
+            self.window = Frame(self.root)
+            self.window.pack()
+            Label(self.window, text='请输入旧密码： ', font=('宋体', 15)).grid(row=0, column=0, padx=70, pady=70)
+            self.UserOldInput = Entry(self.window)
+            self.UserOldInput.grid(row=0, column=1, padx=75, pady=75)
+            Label(self.window, text='请输入新密码： ', font=('宋体', 15)).grid(row=1, column=0, padx=70, pady=70)
+            self.UserNewInput = Entry(self.window, show='*')
+            self.UserNewInput.grid(row=1, column=1, padx=75, pady=75)
+            Button(self.window, text='确认', width=10, command=self.confirm,
+                   font=('宋体', 15)).grid(row=2, column=0, padx=70, pady=70)
+
+    def confirm(self):
+        a = self.UserOldInput.get()
+        b = self.UserNewInput.get()
+
+        conn = pymysql.connect(host='localhost', user='root', password='123456', db='ruangong', charset='utf8')
+        cur = conn.cursor()
+        search_sqi = "set sql_safe_updates=0;"
+        cur.execute(search_sqi)
+        search_sqi = "select studentPassword from student where studentId=\"" + self.id + "\";"
+        cur.execute(search_sqi)
+        info = cur.fetchone()
+        if a == info[0] and b != info[0]:
+            search_sqi = "update student set studentPassword =\"" + b + "\" where studentId=\"" + self.id + "\";"
+            cur.execute(search_sqi)
+            conn.commit()
+            tkinter.messagebox.showinfo(title='提示', message='密码修改成功！')
+        elif a != info[0]:
+            tkinter.messagebox.showerror(title='警告', message='旧密码输入错误')
+        else:
+            tkinter.messagebox.showinfo(title='提示', message='新旧密码不能一样！')
+        cur.close()
+        conn.close()
+
+    def Exam(self, exam_id, begin_time):
+        def choose(num):
+
+            self.que_no = num
+
+            no = "第" + str(self.que_no) + "题选项"
+            ts["text"] = no
+            if user_answer[num - 1] == 'A':
+                bta["bg"] = gai
+                btb["bg"] = yuan
+                btc["bg"] = yuan
+                btd["bg"] = yuan
+            elif user_answer[num - 1] == 'B':
+                bta["bg"] = yuan
+                btb["bg"] = gai
+                btc["bg"] = yuan
+                btd["bg"] = yuan
+            elif user_answer[num - 1] == 'C':
+                bta["bg"] = yuan
+                btb["bg"] = yuan
+                btc["bg"] = gai
+                btd["bg"] = yuan
+            elif user_answer[num - 1] == 'D':
+                bta["bg"] = yuan
+                btb["bg"] = yuan
+                btc["bg"] = yuan
+                btd["bg"] = gai
+            else:
+                bta["bg"] = yuan
+                btb["bg"] = yuan
+                btc["bg"] = yuan
+                btd["bg"] = yuan
+
+        def zt(y):
+            if y == 'A':
+                bta["bg"] = gai
+                btb["bg"] = yuan
+                btc["bg"] = yuan
+                btd["bg"] = yuan
+            elif y == 'B':
+                bta["bg"] = yuan
+                btb["bg"] = gai
+                btc["bg"] = yuan
+                btd["bg"] = yuan
+            elif y == 'C':
+                bta["bg"] = yuan
+                btb["bg"] = yuan
+                btc["bg"] = gai
+                btd["bg"] = yuan
+            else:
+                bta["bg"] = yuan
+                btb["bg"] = yuan
+                btc["bg"] = yuan
+                btd["bg"] = gai
+            user_answer[self.que_no - 1] = y
+            if self.que_no == 1:
+                button1["bg"] = gai
+            elif self.que_no == 2:
+                button2["bg"] = gai
+            elif self.que_no == 3:
+                button3["bg"] = gai
+            elif self.que_no == 4:
+                button4["bg"] = gai
+            elif self.que_no == 5:
+                button5["bg"] = gai
+            elif self.que_no == 6:
+                button6["bg"] = gai
+            elif self.que_no == 7:
+                button7["bg"] = gai
+            elif self.que_no == 8:
+                button8["bg"] = gai
+            elif self.que_no == 9:
+                button9["bg"] = gai
+            else:
+                button10["bg"] = gai
+
+        def tj():
+            for op in user_answer:
+                if op == 'E':
+                    tkinter.messagebox.showerror(title='警告', message='温馨提示，您还有题未作答！')
+                    break
+            else:
+                fraction = 0
+                for op in range(10):
+                    if standard_answer[number_list[op]] == user_answer[op]:
+                        fraction += 10
+
+
+                conn1 = pymysql.connect(host='localhost', user='root', password='123456', db='ruangong', charset='utf8')
+                cur1 = conn1.cursor()
+
+                # timestamp = int(time.time())
+                # time_local = time.localtime(timestamp)
+                # timetable = time.strftime("%Y-%m-%d %H:%M:%S", time_local)
+                # search_sqi1 = "set sql_safe_updates=0;"
+                # cur1.execute(search_sqi1)
+                # search_sqi1 = "select ExamName from examnation where ExamID=\"" + exam_id + "\";"
+                # cur1.execute(search_sqi1)
+                # inf1 = cur1.fetchone()
+                # search_sqi1 = "insert into studentscore values (\"" + \
+                #               self.id + "\",\"" + inf1[0] + "\"," + str(fraction) + ",\"" + begin_time + "\"," + "\"" \
+                #               + timetable + "\");"
+                timestamp = int(time.time())
+                time_local = time.localtime(timestamp)
+                timetable = time.strftime("%Y-%m-%d %H:%M:%S", time_local)
+                search_sqi1 = "set sql_safe_updates=0;"
+                cur1.execute(search_sqi1)
+                search_sqi1 = "select ExamName from examnation where ExamID=\"" + exam_id + "\";"
+                cur1.execute(search_sqi1)
+                inf1 = cur1.fetchone()
+                search_sqi1 = "insert into studentscore values (\"" + \
+                              self.id + "\",\"" + inf1[0] + "\"," + str(fraction) + ",\"" + begin_time + "\"," + "\"" \
+                              + timetable + "\");"
+                cur1.execute(search_sqi1)
+                conn1.commit()
+                cur1.close()
+                conn1.close()
+                tkinter.messagebox.showinfo(title='考试结束', message='你的总分是'+str(fraction)+'!')
+                self.window.pack_forget()
+                self.window = Frame(self.root)
+                self.window.pack()
+                self.flag = 0
+                # 将成绩存入数据库并关闭当前答题界面回到学生页面
+
+        self.window.pack_forget()
+        self.window = Frame(self.root)
+        self.window.pack()
+        count = 1
+        maxCount = 10
+
+        user_answer = []
+        for i in range(maxCount):
+            user_answer.append('E')
+
+        standard_answer = []
+
+        space_list = []
+
+        conn = pymysql.connect(host='localhost', user='root', password='123456', db='ruangong', charset='utf8')
+
+        cur = conn.cursor()
+
+        search_sqi = "select * from examnation where ExamID=\"" + exam_id + "\";"
+
+        cur.execute(search_sqi)
+
+        info = cur.fetchone()
+
+        for i in range(4, 14):
+            search_sqi = "select * from questions where QuesId=\"" + info[i] + "\";"
+
+            cur.execute(search_sqi)
+
+            info1 = cur.fetchone()
+
+            standard_answer.append(info1[7])
+
+            tab = '\n\t'
+
+            content = info1[2] + tab + info1[3] + tab + info1[4] + tab + info1[5] + tab + info1[6]
+
+            space_list.append(content)
+        cur.close()
+        conn.close()
+        # 此时 space_list 变量存储的才是我们真正想要的题库数据 (数据清洗)
+        # 随机产生索引 使用set集合是为了不随机产生相同的索引数字
+        # 创建一个空集合，用于存储产生不重复的随机数 用作索引题库(space_list)
+        number_list = []
+        while True:
+
+            # 如果number_set的长度等于最大题数，说明产生了我们想要的随机数个数 那就跳出死循环
+            if len(number_list) == maxCount:
+                break
+            # 将产生的随机数添加到number_list
+            x = random.randint(0, len(space_list) - 1)
+            if x not in number_list:
+                number_list.append(x)
+
+        # 并将产生的新题目存入到paper_list
+
+        paper_list = []
+        for i in number_list:
+            paper_list.append(space_list[i])
+
+        s = ''
+        for i in number_list:
+            s += str(count) + "、" + space_list[i]
+            s += '\n'
+            count += 1
+
+        # 创建滚动条，放到窗口的右侧, 填充Y竖直方向
+        main_panedwindow = PanedWindow(self.window, sashrelief=RAISED, sashwidth=20, orient=VERTICAL)
+
+
+        # 题目列表区
+        course_list_frame1 = Frame()
+        text = Text(course_list_frame1, width=100, height=25, wrap='char')
+        text.insert("insert", f'{s}')
+        text['state'] = 'disabled'
+        text.pack()
+        # course_list_frame1.pack(side=LEFT, fill=X, expand=YES)
+        course_list_frame1.pack(side=TOP, fill=X, padx=5, pady=5, expand=YES, anchor='n')
+
+        # 将数据列表区加入到主窗体
+        main_panedwindow.add(course_list_frame1)
+
+        # 定义按钮点击前后颜色
+        yuan = 'DimGray'
+        gai = 'DeepSkyBlue'
+        self.window1 = Frame(self.root)
+
+        # 当前所做所做题号，初始化默认为1
+
+        button1 = Button(self.window1, width=5, text="1", command=lambda: choose(1), bg=yuan)
+
+        button2 = Button(self.window1, width=5, text="2", command=lambda: choose(2), bg=yuan)
+
+        button3 = Button(self.window1, width=5, text="3", command=lambda: choose(3), bg=yuan)
+
+        button4 = Button(self.window1, width=5, text="4", command=lambda: choose(4), bg=yuan)
+
+        button5 = Button(self.window1, width=5, text="5", command=lambda: choose(5), bg=yuan)
+
+        button6 = Button(self.window1, width=5, text="6", command=lambda: choose(6), bg=yuan)
+
+        button7 = Button(self.window1, width=5, text="7", command=lambda: choose(7), bg=yuan)
+
+        button8 = Button(self.window1, width=5, text="8", command=lambda: choose(8), bg=yuan)
+
+        button9 = Button(self.window1, width=5, text="9", command=lambda: choose(9), bg=yuan)
+
+        button10 = Button(self.window1, width=5, text="10", command=lambda: choose(10), bg=yuan)
+
+        button1.pack(side=LEFT, padx=10)
+
+        button2.pack(side=LEFT, after=button1, padx=10, pady=5)
+
+        button3.pack(side=LEFT, after=button2, padx=10, pady=5)
+
+        button4.pack(side=LEFT, after=button3, padx=10, pady=5)
+
+        button5.pack(side=LEFT, after=button4, padx=10, pady=5)
+
+        button6.pack(side=LEFT, after=button5, padx=10, pady=5)
+
+        button7.pack(side=LEFT, after=button6, padx=10, pady=5)
+
+        button8.pack(side=LEFT, after=button7, padx=10, pady=5)
+
+        button9.pack(side=LEFT, after=button8, padx=10, pady=5)
+
+        button10.pack(side=LEFT, after=button9, padx=10, pady=5)
+
+        bta = Button(self.window1, width=5, text="A", command=lambda: zt('A'), bg=yuan)
+
+        btb = Button(self.window1, width=5, text="B", command=lambda: zt('B'), bg=yuan)
+
+        btc = Button(self.window1, width=5, text="C", command=lambda: zt('C'), bg=yuan)
+
+        btd = Button(self.window1, width=5, text="D", command=lambda: zt('D'), bg=yuan)
+
+        t = "第" + str(self.que_no) + "题选项"
+        ts = Label(self.window1, width=10, text=t, bg=gai)
+        ts.pack(side=LEFT, padx=10)
+        # bta.pack(side=LEFT, after=ts, padx=10)
+        # btb.pack(side=LEFT, after=bta, padx=10, pady=5)
+        # btc.pack(side=LEFT, after=btb, padx=10, pady=5)
+        # btd.pack(side=LEFT, after=btc, padx=10, pady=5)
+        bta.pack(side=LEFT, after=ts, padx=10)
+
+        btb.pack(side=LEFT, after=bta, padx=10, pady=5)
+
+        btc.pack(side=LEFT, after=btb, padx=10, pady=5)
+        btd.pack(side=LEFT, after=btc, padx=10, pady=5)
+        tj = Button(self.window1, width=8, text="提交试卷", bg="red", command=tj)
+        tj.pack(side=LEFT, after=btd, padx=10, pady=5)
+        main_panedwindow.add(self.window1)
+        main_panedwindow.pack(fill=BOTH, expand=1)
+    def SendM(self):
+        self.window.pack_forget()
+        self.window = Frame(self.root)
+        self.window.pack()
+
+
+        Label(self.window, text='请输入留言： ', font=('宋体', 15)).grid(row=0, column=0, padx=70, pady=70)
+        self.MInput = Entry(self.window)
+        self.MInput.grid(row=0, column=1, padx=75, pady=75)
+
+        Label(self.window, text='请输入收件人： ', font=('宋体', 15)).grid(row=1, column=0, padx=70, pady=70)
+        self.ReInput = Entry(self.window, show='*')
+
+        self.ReInput.grid(row=1, column=1, padx=75, pady=75)
+
+        Button(self.window, text='确认', width=10, command=self.confirmM,
+
+               font=('宋体', 15)).grid(row=2, column=0, padx=70, pady=70)
+    def confirmM(self):
+
+        if len(self.MInput.get())==0 or len(len(self.ReInput.get()))==0:
+            messagebox.showerror(title='提示', message='不允许为空！')
+
+
+        else:
+            messagebox.showinfo(title='提示',message='已发送！')
+if __name__ == '__main__':
+    root = Tk()
+    StuSc(root, '021154001')
+    root.mainloop()