diff --git a/.cache/mergePDFs.exe b/.cache/mergePDFs.exe
new file mode 100644
index 0000000..3d1576a
Binary files /dev/null and b/.cache/mergePDFs.exe differ
diff --git a/.cache/mergePDFs.go b/.cache/mergePDFs.go
new file mode 100644
index 0000000..6793f18
--- /dev/null
+++ b/.cache/mergePDFs.go
@@ -0,0 +1,58 @@
+package main
+
+import (
+	"io/ioutil"
+	"os"
+	"sort"
+	"strings"
+)
+
+func main() {
+	dirPath := "." // 当前目录
+	mergeSplitPDFsInDirectory(dirPath)
+}
+
+func mergeSplitPDFsInDirectory(dirPath string) {
+	files, err := ioutil.ReadDir(dirPath)
+	if err != nil {
+		panic(err)
+	}
+
+	splitFiles := make(map[string][]string)
+
+	for _, file := range files {
+		if file.IsDir() {
+			continue
+		}
+		fileName := file.Name()
+		if strings.Contains(fileName, ".pdf.") {
+			baseName := strings.Split(fileName, ".pdf.")[0] + ".pdf"
+			splitFiles[baseName] = append(splitFiles[baseName], fileName)
+		}
+	}
+
+	for baseName, parts := range splitFiles {
+		sort.Strings(parts) // 确保文件顺序正确
+		mergeFiles(baseName, parts)
+	}
+}
+
+func mergeFiles(baseName string, parts []string) {
+	mergedFile, err := os.Create(baseName)
+	if err != nil {
+		panic(err)
+	}
+	defer mergedFile.Close()
+
+	for _, part := range parts {
+		data, err := ioutil.ReadFile(part)
+		if err != nil {
+			panic(err)
+		}
+		_, err = mergedFile.Write(data)
+		if err != nil {
+			panic(err)
+		}
+		os.Remove(part) // 合并后删除分割文件
+	}
+}
diff --git a/高中/英语/重庆大学版-重庆大学出版社/mergePDFs.exe b/高中/英语/重庆大学版-重庆大学出版社/mergePDFs.exe
new file mode 100644
index 0000000..3d1576a
Binary files /dev/null and b/高中/英语/重庆大学版-重庆大学出版社/mergePDFs.exe differ