已知NH4+＋AlO2-＋2H2O＝Al(OH)3↓＋NH3·H2O。向含有等物质的量的NH4Cl、AlCl3和HCl混合溶液中慢慢滴加NaOH溶液至过量,并不断搅拌，可能发生以下离子反应：
①H＋＋OH－＝H2O； ②Al(OH)3＋OH－＝AlO2－＋2H2O； ③Al3＋＋3OH－＝Al(OH)3↓；
④NH4＋＋OH－＝NH3·H2O； ⑤NH4＋＋AlO2－＋2H2O＝Al(OH)3↓＋NH3·H2O。
其正确的离子反应顺序是
| A．①③②④ | B．①③④② | C．①③②⑤ | D．①④③② |
If you leave the club, you will not be_____back in .
| A．received | B．admitted | C．turned | D．moved |
What I need is_____ book that contains ______ABC of oil painting.
| A．a; 不填 | B．the; 不填 | C．the; an | D．a ; the |
Jenny nearly missed the flight______ doing too much shopping.
| A．as a result of | B．on top of | C．in front of | D．in need of |
The CDs are on sale! Buy one and you get ______ completely free. 
| A． | other | B． | others | C． | one | D． | ones |
I’m sure that your letter will get______ attention. They know you’re waiting for the reply. 
| A．continued | B．immediate | C．careful | D．general |