题目

    下列有关化学用语表示正确的是                                    A．熔融状态下硫酸氢钾的电离方程式：KHSO4===K＋＋H＋＋SO B．Cl－的结构示意图： C．中子数为8的碳原子：6C D．NaCl的电子式： 答案：CNone of us expected Lily to _____ at the party. We thought she was still in Beijing.     A. turn in                     B. turn over                        C. turn up                            D. turn down