某模拟"人工树叶”电化学实验装置如图所示，该装置能将H2O和CO2转化为O2和燃料(C3H8O)。下列说法正确的是
| A．该装置将化学能转化为光能和电能 |
| B．该装置工作时，H＋从a极区向b极区迁移 |
| C．每生成1 mol O2，有44 g CO2被还原 |
| D．a电极的反应为：3CO2+ 18H＋＋18e－＝C3H8O+5H2O |
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 |