Update app.py

app.py

@@ -75,7 +75,7 @@ def generate_math_questions(grade, term, qtype="Unspecified", num_questions=10):
     print(f"Retrieved {len(raw_questions)} document(s)")
 
     # 隨機選取並限制字串長度的題庫內容
-    input_question_bank = random_questions_with_limit(raw_questions, 1000)
+    input_question_bank = random_questions_with_limit(raw_questions, 1500)
 
     # 系統訊息 (system) 與使用者要求 (user) 的對話內容
     # 說明給模型：要產生新的英文題目，保持難度與風格類似，但不要直接抄題庫原文
@@ -101,7 +101,7 @@ def generate_math_questions(grade, term, qtype="Unspecified", num_questions=10):
             - Clearly distinguish the new question and the answer.
             - If multiple questions are generated, number them sequentially.
             - Ensure clarity and correctness in all generated content.
-            - Respond only in English."""
+            - Respond only in **English**."""
         },
         {
             "role": "user",