单选题 通读下面的短文，掌握其大意。然后，从每小题的四个选择项中选出可填入相应空白处的最佳选项。
Over the summer, my family took a divip to Iceland to see the natural beauty of it.Little did I
21　 I would wake up one morning to have my eyes swelled up（肿胀）like balloons! I was frightened.So many questions were
22　 through my head.Am I allergic（过敏的）to something? Was there some Icelandic disease that I
23　  The only help I received was some allergy medicine
24　 a clinic nearby.Nothing was working.When the divip was over, l went to see my doctor.She gave me eye drops, but clearly they weren't worth the time or
25　 and the swelling got worse and worse.I finally decided that it would be best for me to
26　 being so sad and take it easy and have fun.It was summer after all.I had a fun night with my friends as if nothing was
27　The next morning I woke up and went to
28　 how swollen my eyes were, only to find myself
29　 at my normal face.It was a miracle（奇迹） I
30　 asking myself why I hadn't done that earlier.Was being with my friends and having fun really the
31　 to my problem?To this day I still do not know what I had, and
32　 do any of the many doctors that I
33　 during the summer.I would really like to go back to Iceland to see the Northern Lights, 　34　 I am very much frightened that I am just allergic to the coundivy.I hope I never
35　 having such terrible swelling in my eyes ever again.（　　）