将硬脂酸甘油酯和氢氧化钠溶液共热进行皂化反应，能把硬脂酸钠和甘油从混合溶液中分离出来的方法是：①盐析②过滤③蒸馏④分液⑤结晶。其中正确的组合是
| A．①②③ | B．①③④⑤ | C．②③④ | D．①②④⑤ |
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 |