The first sentence of a paragraph is an introductory sentence, also called _______ sentence.

It was essential that the application forms ______ back...

单项选择题It was essential that the application forms ______ back before the deadline. A. must be sent B. be sent C. would be sent D. were sent

下列哪项不是中医养生的基本原则A． 天人合一 B． 顺应自然 C． 起居饮食 D． 形神共养 E． 阴阳平衡

单项选择题下列哪项不是中医养生的基本原则

当征收关税时，获得国内价格与出口价格之间差额的是A．有权进口物品的人 B．外国出口者 C．进口国政府 D．进口...

单项选择题当征收关税时，获得国内价格与出口价格之间差额的是