VL Fe2(SO4)3溶液中含有ag SO42-,取此溶液0.5VL,用水稀释至2VL,则稀释后溶液中Fe3+的物质的量的浓度为
A. mol/L |
B. mol/L |
C. mol/L |
D. mol/L |
The CDs are on sale! Buy one and you get ______ completely free.
| A.other | B.others | C.one | D.ones ks |
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 |
Progress______ so far very good and we are sure that the work will be finished on time.
| A.was | B.had been | C.has been | D.will be |