问题
选择题
．We are taught that a business letter should be written in a formal style ____ in a personal one．
A．less than
B．other than
C．better than
D．rather than
答案
答案：D
短语辨析。A．小于B．除了；不同于 C．超过；好于……D．而不是。句意：已经教给你了商业信函应该用正式的格式书写而不是以私人风格，故选D。