标志是说明______的概念。
A．总体单位特征 B．总体单位数量特征C．总体数量特征 D．总体品质特征
参考答案：A
I can hardly imagine a hard-working man like Jacky Chan. Could you tell us ________?
A．how much time did he devote to charity
B．what is Jacky Chan like
C．if or not his new movie Police Story 2013 is shown
D．what makes him so energetic
在清扫客房时，房内的电话响了服务员应如何处理？
