题目

Please remain ______; the winner of the prize will be announced soon.A. seating                        B. seated                      C. to seat               D. to be seated 答案：B解析此题考查动词的非谓语形式。remain为系动词，意为“保持，仍是，尚待”后面接名词，形容词，分词，不定式或介词短语。句意“请保持就座，这个奖的获胜者就要宣布了。Seat用作及物动词，让某人坐是 somebody be seated 或seat somebody / oneself. 可以用sitting代替seated .三段论：“①只有船准时起航，才能准时到达目的港；②某艘船是准时到达目的港的；③所以这艘船是准时起航的”中小前提是（　　）A．①B．②C．①②D．③