diff --git a/ExamSphere_demo/class_picture/C++.png b/ExamSphere_demo/class_picture/C++.png
new file mode 100644
index 0000000..311d315
Binary files /dev/null and b/ExamSphere_demo/class_picture/C++.png differ
diff --git a/ExamSphere_demo/class_picture/Java.jpg b/ExamSphere_demo/class_picture/Java.jpg
new file mode 100644
index 0000000..1566c8f
Binary files /dev/null and b/ExamSphere_demo/class_picture/Java.jpg differ
diff --git a/ExamSphere_demo/class_picture/Linux.jpg b/ExamSphere_demo/class_picture/Linux.jpg
new file mode 100644
index 0000000..a99729f
Binary files /dev/null and b/ExamSphere_demo/class_picture/Linux.jpg differ
diff --git a/ExamSphere_demo/class_picture/PHP.jpg b/ExamSphere_demo/class_picture/PHP.jpg
new file mode 100644
index 0000000..6f883fc
Binary files /dev/null and b/ExamSphere_demo/class_picture/PHP.jpg differ
diff --git a/ExamSphere_demo/class_picture/Python.jpg b/ExamSphere_demo/class_picture/Python.jpg
new file mode 100644
index 0000000..3de3f58
Binary files /dev/null and b/ExamSphere_demo/class_picture/Python.jpg differ
diff --git a/ExamSphere_demo/class_picture/Vue.jpg b/ExamSphere_demo/class_picture/Vue.jpg
new file mode 100644
index 0000000..4c04f34
Binary files /dev/null and b/ExamSphere_demo/class_picture/Vue.jpg differ
diff --git a/ExamSphere_demo/class_picture/前端.jpg b/ExamSphere_demo/class_picture/前端.jpg
new file mode 100644
index 0000000..eb2cd8a
Binary files /dev/null and b/ExamSphere_demo/class_picture/前端.jpg differ
diff --git a/ExamSphere_demo/class_picture/数据结构.gif b/ExamSphere_demo/class_picture/数据结构.gif
new file mode 100644
index 0000000..3695832
Binary files /dev/null and b/ExamSphere_demo/class_picture/数据结构.gif differ
diff --git a/ExamSphere_demo/class_picture/计算机操作系统.gif b/ExamSphere_demo/class_picture/计算机操作系统.gif
new file mode 100644
index 0000000..05d8159
Binary files /dev/null and b/ExamSphere_demo/class_picture/计算机操作系统.gif differ
diff --git a/ExamSphere_demo/class_picture/计算机组成原理.jpg b/ExamSphere_demo/class_picture/计算机组成原理.jpg
new file mode 100644
index 0000000..5889e23
Binary files /dev/null and b/ExamSphere_demo/class_picture/计算机组成原理.jpg differ
diff --git a/ExamSphere_demo/class_picture/计算机网络.jpg b/ExamSphere_demo/class_picture/计算机网络.jpg
new file mode 100644
index 0000000..37a7a24
Binary files /dev/null and b/ExamSphere_demo/class_picture/计算机网络.jpg differ