84. Why is the route being changed?
(A) The weather is too hot.
(B) A structure is being repaired.
(C) An event is taking place.
(D) The park is closing early.

Questions 83 through 85 refer to the following tour guide, Speech and Math.Welcome to the historic City Botanical Gardens. I'll be your guide for this morning's walk.Usually we start our tour at the Rose Garden, proceed through the Fern Valley and end at the Japanese Pavilion. However, Please note a change today. The bridge connecting the main Plaza to the Fern Valley is currently undergoing maintenance.Therefore, we'll take a detour from here. We will walk directly north to the Cactus Collection, past the gift shop, and loop around to the Japanese Pavilion from the back. We will unfortunately have to skip the Fern Valley today.
第 83 至 85 題參考以下導覽手冊：演講與數學。歡迎來到歷史悠久的城市植物園。今天早上的遊覽將由我擔任導遊。通常，我們的遊覽從玫瑰園開始，穿過蕨谷，最後到達日本館。但是，請注意今天的行程有所變動。連接主廣場和蕨谷的橋樑目前正在維修。因此，我們將繞道而行。我們將直接向北走到仙人掌區，經過禮品店，然後繞到日本館的後方。很遺憾，今天我們將無法參觀蕨谷。