下列溶液中有关微粒的物质的量浓度关系正确的是
| A．常温下，将醋酸钠、盐酸两溶液混合后，溶液呈中性，则混合溶液中： c(Na+)=c(CH3COO-) |
| B．相同条件下pH＝5的①NH4Cl溶液 ②CH3COOH溶液 ③稀盐酸溶液中由水电离的 c(H+)：①>②>③ |
| C．pH相等的①NH4Cl ②(NH4)2SO4 ③NH4HSO4溶液中，c(NH4+)大小顺序：①＝②>③ |
| D．0.1mol/L醋酸钡溶液中，c (Ba2+)>c(CH3COO-)>c(OH-)> c (H+) |
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 |
All the dishes in this menu, ______ otherwise stated, will serve two to three people. 
| A．as | B．if | C．though | D．unless |
The children loved their day trip, and they enjoyed the horse ride ______.
| A．most | B．more | C．less | D．little |