在Fe2(SO4)3溶液中，加入ag铜，完全溶解后，再加bg铁，充分反应后得到cg残余固体，且a>c，则下列说法正确的是
| A．所得溶液呈无色 | B．最后得到的溶液中一定含有Cu2+ |
| C．将残余固体加入到稀H2SO4中，有气泡产生 | D．最后得到的溶液中可能含有Fe3+ |
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All the dishes in this menu, ______ otherwise stated, will serve two to three people. 
| A．as | B．if | C．though | D．unless |
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| A．was | B．had been | C．has been | D．will be |
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| A．someone | B．anyone | C．not one | D．no one |
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