增加题目id

server/routes_io_exam.ts

@@ -151,6 +151,7 @@ export function setupExamEvents({ socket, apiClient }: Variables) {
       //   }
       // });
       const quizState:QuizState = {
+        id: `question-${Date.now()}`,
         date: question.date, 
         price: question.price
       }