根据苯环多少和结合形式的差别，芳香烃分为3类，其中不含（）。
A、单环
B、双环
C、多环
D、稠环
参考答案：B
166. As we all know, _____ is very famous for its software industry though it is a developing country.
A．Japan
B．South Korea
C．India
D．Ireland
可明显减少维生素、矿物质等水溶性营养素损失的烹调方式是（ ）
A．炸
B．蒸煮
C．烤
D．微波加热
