市场营销环境的特征中，( )要求企业要密切关注环境的变化，及时调整营销策略。
A．客观性 B．相关性C．多变性D．差异性
参考答案：C
根据所给信息补全对话，每空一词。
Mary: Hi, Betty, can you come to my l. _______2. _______?
Betty: Sure. I'd 3. _______ 4. _______ 5. _______ 6_______ is it?
Mary: It's at 7. _______ on 8. _______
Betty: But where is it?
Mary: In 9. _______ house,4 New Street.
Betty: OK. I'm 10. _______soon.
