Is the main nutritional component of glutinous rice starch or sugar?

From a daily perspective, of course it is starch, because starch is re-decomposed into maltose → glucose in the human body, thereby providing an energy source for humans, but its essence is still a starch sugar.

This is the so-called professional perspective. Living substances include sugars, lipids, proteins, etc. Starch undoubtedly belongs to the category of sugars, but this sugar is not the so-called sugar in our daily life. Because sugar in daily life means "sucrose or glucose". For example, sugar cane is said to be mainly composed of sugar, but glutinous rice is not.

So whether to choose or not, the key is daily life or exams. If it is daily life and you say it is sugar, people will laugh at you. If it is an exam, the answer "starch" is more accurate, so to be on the safe side, it is all Count it as starch.