小东同学做“测量小灯泡电阻”的实验，按要求完成下面各题：

A．G→Q+NaCl

B．Q+H₂O→X+H₂↑

C．Y+NaOH→G+Q+HO

D．Z+NaOH→Q+X+H₂O

判断氯的化合价由低到高的排列顺序（   ）

_______ is an unhealthy life style.

阅读下面这首诗，完成后面问题。
                                                                                      江亭夜月送别二首（其二）
                                                                                                    王勃
                                                                                               乱烟笼碧砌，
                                                                                               飞月向南端。
                                                                                               寂寞离亭掩，
                                                                                                江山此夜寒。