问题
选择题
We are taught that a business letter should be written in a formal style in a personal one.
A．rather than
B．more than
C．better than
D．less than
答案
答案：A
题目分析：句意：我们被教育商业书信应该写成正式文体，而不是个人形式。rather than而不是；more than超过；better than比……更好；less than小于，选A。