题目

If they win the final tonight, the team are going to tour around the city ______ by their enthusiastic supporters.   A. being cheered       B. be cheered     C. to be cheered     D. were cheered   答案：C氢化铵（NH4H）与氯化铵结构相似，又已知NH4H 与水反应有H2生成，下列叙述中正确的是（　　）A．NH4H是共价化合物B．NH4H溶于水后，所形成的溶液显酸性C．NH4H溶于水时，NH4H是氧化剂D．NH4H固体投入少量水中，有两种气体生成