题目

Don't eat ________ sweets, Benny! There is ________ sugar in them. A . too much; too much B . too many; too much C . too many; too many 答案：B如图，某人在建筑物AB的顶部测得一烟囱CD的顶端C的仰角为45°，测得C在湖中的倒影C1的俯角为60°，已知AB=20m，则烟囱CD的高为______m．