题目

下列物质中的主要成分不属于糖类的是                                                                   （    ）       A．棉花                   B．木材                   C．豆油                   D．小麦  答案：C解析:  The thief was lucky that he missed ________ in the shop． [　　] A． catching B． to be caught C． being caught D． catch