问题
单项选择题
The olfactory regions of the nose are yellow, richly moist, and ______.
A．fully fatty substances
B．full, fatty substances
C．full of fatty substances
D．fatty substances are full
答案
参考答案：C
解析：[分析] 结构识别 此句是主系表结构，但此处这个表语substances带有三个并列的定语形容词：yellow， moist和fatty，而副词richly修饰moist，full of修饰fatty；因此答案为C。