（）属于行业分析的宏观内容。
A.相关政策
B.市场需求
C.产品结构
D.主要经济指标
E.产业走势分析
参考答案：A, D, E
I did not accept any of the many offerings，because I found ________ satisfactory.
A．neither of them
B．none of them
C．either of them
D．all of them not
下列通过抑制细菌细胞壁的合成而产生抗菌活性的药物是
A．阿霉素B．氯霉素C．罗红霉素D．卡那霉素E．氨曲南
