________ students’ daily need, our school has built more than 2 canteens. A: Meeting B: Met C: To meet D: Having met

6 The students met their 'English teacher/English 'teacher on the street. A: 'English teacher B: English'teacher

I wish _____ my uncle yesterday. A: had met B: would met C: met D: have met

I ______ them in the past few years. A: has met B: met C: haven’t met D: haven’t been met

He arrived in Beijing, where he_____his friend . A: was met by B: was met C: was meeting D: met by

He arrived in Beijing, where he ____ his friend. A: meets B: met by C: was met D: was met by

This is the fifth time that we ______ each other. A. met B. have met C. had met D. meet

已知一中缀表达式为:6*2*(7+5)+2*(6+9/3),则等值的后缀表达式是( )。 A: 6 2 * 7 5 + * 2 6 9 3 / + * + B: 6 2 7 5 + * * 2 6 9 3 / + * + C: 6 2 * 7 5 + * 9 3 / 6 + 2 * + D: 6 2 7 5 + * * 2 6 9 + 3 / * +

【单选题】Cu 的基态电子组态为 。 A. 1s 2 2s 2 2p 6 3s 2 3p 6 3d 9 4s 2 B. 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 1 C. 1s 2 2s 2 2p 6 3s 2 3p 6 3d 5 4s 1 D. 1s 2 2s 2 2p 6 3s 2 3p 6 3d 6 4s 2

'Had you already met him?' She asked me ... A: whether had I already met him. B: if I already met him. C: if I'd already met him.