In advertisement English, there is a tactful use of homophones — words that are pronounced alike but written differently and often have different meanings. This feature can be seen in ______.

A．I’m MORE satisfied. (cigarette)

B．The new computer from AT&T. Flexible. Reliable. And very compatible. (computer)

C．7 days without 7-up make one weak. (beverage)

D．Less is more. (car)

医院感染研究细菌学方法常用的是

A．传统手工鉴定方法
B．调查与实验研究设计
C．描述性研究和分析性研究
D．DNA克隆技术
E．以上都是