题目

阅读理解Thursday, April 24thWe got to the clean, lovely city of Yangzhou early in the morning. This is our first trip to China. All the different smells attract our attention to the local food. We are going to try something special for dinner tonight. The hotel we are staying in is not expensive but very clean. We plan to stay here for a few days, visit some places in the city, and then travel to the Great Wall in the north. Sunday, April 27thWe visited the famous Slender West Lake (瘦西湖) which was crowded with visitors from all over the world, and bought a lot of toys for our friends如果把分数的分子、分母分别加上正整数a、b，结果等于，那么a＋b的最小值是多少？