已知X、M都是中学教材常见元素，下列对两个离子反应通式的推断中，其中正确的是（　　）

（甲） XO₃^n﹣+X^n﹣+H⁺→X单质+H₂O（未配平）；  （乙）M^m++mOH^﹣=M（OH）_m↓

①若n=1，则XO₃^n﹣中X元素为+5价，X位于周期表第ⅤA族

②若n=2，则X最高价氧化物的水化物可能与它的氢化物反应

③若m=1，则M（NO₃）_m溶液和氨水互滴时的现象可能不同

④若m=2，则在空气中蒸干、灼烧MSO₄溶液一定能得到MSO₄

⑤若m=3，则MCl₃与足量氢氧化钠溶液反应一定生成M（OH）_m．

一个人活在世上，做人的良知是（   ） 

    Sally is a good girl. She never ____  up late. Her mother wakes her up（唤醒）at 6:00 a.m. From a quarter ____  six, she begins to do sports. The she comes back and has ____  at six forty. After that, she goes to school. Sometimes she ____ her bike.
At school, Sally has seven classes on ____ . Sally is good at（擅长）English. She san speak English very well. After school she often plays ____  games with her ____ . Then she goes home by bus. She gets home before 6:00 p.m.. After
____  she begins to do her ____ . Then she ____  TV for a while, she always goes to bed before half past ten.