正确答案: D

淀粉

题目：糖类

解析：D

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学习资料的答案和解析：

[单选题]第三节（共13小题，每小题1分，满分听下面4段对话或独白。每段对话或独白后有几个小题， 从题中所给的A、B、C三个选项中选出最佳选项。听每段对话和独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间，每段对话或独白读两遍。听第13段材料，回答第13至15题。13.What does the woman want to get？

Tickets to a play.

[单选题]AIf you go to a fast food restaurant．you will probably see a lot of teenagers． Today，many teenagers are overweight，and some of．this is because of their bad eating habits．， Most teenagers love food with a lot of fat，oil，salt，and sugar． People often call this kind of food "junk food"．

fat，oil，salt and sugar

解析：．21．D【解析】由第一段最后两句Most teenagers love food with a.lot of fat，oil，salt，and sugar. People of- ten call this kind of food“junk food".可知。