Questions 32 to 35 are based on the passage you have just heard.

　　32. What is the main topic of this talk?

　　【解析】選[D]。在聽錄音之前，預覽選項可知本文與飲食習慣和鍛煉有關。

　　33. According to the speaker, which will burn most quickly with exercise?

　　【解析】選[B]。預讀選項可知此題詢問有關食物種類的細節，聽的過程中需要留意對它們的描述。本題答案依據為When you exercise, cabohydrates are the first calories to burn, 根據常識sugar正是碳水化合物的一種，故選[B]。

　　34. According to the speaker, what is the most effective exercise time schedule for reducing weight?

　　【解析】選[D]。預讀選項可知此題詢問的有關鍛煉的時間安排。注意，只要抓住three to four days a week這個關鍵信息就可以了。

　　35. What does the speaker say is burned at the beginning of exercise?

　　【解析】選[A]。預讀選項可知此題詢問的有關食物營養成分的細節。注意，Carbohydrates的意思是“碳水化合物”。