【简答题】用方框里所给的单词的适当形式填空,使文章通顺、连贯、合理 photo regular good keep that Every person needs friends. Friends are 小题1: who open their hearts to us. They always encourage us to try our 小题2: to do everything, a...
【简答题】综合填空。根据句意,用所给单词的适当形式填空。 rapid, understand, hold, language, begin, need, wide English is the most 1 used language in the world. It's used as the mother tongue by most people in many c...
【简答题】写出下列溶液的质子条件式。 (1) 0.1 mol/L NH 3· H 2 O (2) 0.1mol/L H 2 C 2 O 4 (3) 0.1mol/L (NH 4 ) 2 HPO 4 (4) 0.1 mol/L Na 2 S (5) 0.1mol/L (NH 4 ) 2 CO 3 (6) 0.1mol/L NaOH (7) 0.1mol/L H 2 SO 4 (8) 0....