下列物质在水中的电离方程式书写正确的是
| A．NaHSO4=Na＋＋HSO4－ |
| B．NaHCO3=Na＋＋H＋＋CO32- |
| C．KClO3=K＋＋Cl－＋3O2- |
| D．Al2(SO4)3=2Al3＋＋3SO42－ |
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 |
Charles was alone at home, with_______ looking after him.
| A．someone | B．anyone | C．not one | D．no one |
It is often ______ that human beings are naturally equipped to speak.
| A．said | B．to say | C．saying | D．being said |