diff --git a/LPR.doc b/LPR.doc
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diff --git a/Util.docx b/Util.docx
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diff --git a/gitTraining.txt b/gitTraining.txt
deleted file mode 100644
index b0e23de..0000000
--- a/gitTraining.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-#include<iostream>
-#include<algorithm>
-#include<cmath>
-using namespace std;
-
-int main(){
-    
-}
\ No newline at end of file
diff --git a/main.docx b/main.docx
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diff --git a/main.java b/main.java
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index 51e055b..0000000
--- a/main.java
+++ /dev/null
@@ -1,108 +0,0 @@
-package Hello;
-import java.io.*;
-import java.util.*;
-import java.math.*;
-public class Hello{
-	
-	public static double mypow(double e,double x) {
-		double ans=Math.pow(e, x);
-		return ans;
-	}
-	
-	public static double mylog(double a,double x) {
-		double ans=Math.log(x)/Math.log(a);
-		return ans;
-	}
-	
-	public static double myadd(double a,double b) {
-		return a+b;
-	}
-	
-	public static double mysub(double a,double b) {
-		return a-b;
-	}
-	
-	public static double mymultiply(double a,double b) {
-		return a*b;
-	}
-	
-	public  static double mydivide(double a,double b) {
-		return a/b;
-	}
-	
-	public static double mysin(double x) {
-		return Math.sin(x);
-	}
-	
-	public static double mycos(double x) {
-		return Math.cos(x);
-	}
-	
-	public  static double mytan(double x) {
-		return Math.tan(x);
-	}
-	
-	public static void main(String args[]) {
-		Scanner cin=new Scanner(System.in);
-		System.out.printf("功能表：\n说明：输入add a b执行a+b\n"
-				+ "pow e x\nlog a x\nadd a b\nsub a b\nmultiply a b\n"
-				+ "divide a b\nsin x\ncos x\ntan x\nquit:退出\n");
-		while (cin.hasNext()) {
-			String op=cin.next();
-			double a,b,ans=0;
-			switch(op) {
-				case "pow":
-					a=cin.nextDouble();
-					b=cin.nextDouble();
-					ans=mypow(a,b);
-					break;
-				case "log":
-					a=cin.nextDouble();
-					b=cin.nextDouble();
-					ans=mylog(a,b);
-					break;
-				case "add":
-					a=cin.nextDouble();
-					b=cin.nextDouble();
-					ans=myadd(a,b);
-					break;
-				case "sub":
-					a=cin.nextDouble();
-					b=cin.nextDouble();
-					ans=mysub(a,b);
-					break;
-				case "multiply":
-					a=cin.nextDouble();
-					b=cin.nextDouble();
-					ans=mymultiply(a,b);
-					break;
-				case "divide":
-					a=cin.nextDouble();
-					b=cin.nextDouble();
-					while(b==0) {
-						System.out.printf("除数不能为0，请重新输入除数!\n");
-						b=cin.nextDouble();
-					}
-					ans=mydivide(a,b);
-					break;
-				case "sin":
-					a=cin.nextDouble();
-					ans=mysin(a);
-					break;
-				case "cos":
-					a=cin.nextDouble();
-					ans=mycos(a);
-					break;
-				case "tan":
-					a=cin.nextDouble();
-					ans=mytan(a);
-					break;
-				default:
-					System.out.println("已退出计算器\n");
-					return;
-			}
-			System.out.printf("%f\n",ans);
-		}
-		cin.close();
-	}
-}
diff --git a/shibie.docx b/shibie.docx
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diff --git a/trigonometric_function.java b/trigonometric_function.java
deleted file mode 100644
index 377d7ba..0000000
--- a/trigonometric_function.java
+++ /dev/null
@@ -1,12 +0,0 @@
-public double mysin(double x) {
-		return Math.sin(x);
-	}
-	
-	public double mycos(double x) {
-		return Math.cos(x);
-	}
-	
-	public double mytan(double x) {
-		return Math.tan(x);
-	}
-