—Chinese.
A:Where
B:How
C:What
Miss Li is our g____ of the trip.
识图回答下列问题。
和平共处五项原则的首次提出是在
①____ Na2S2O3+____HCl→____ NaCl+____S+____SO2↑+
____H2O
②____ Zn+____H++____NO3﹣→____ Zn2++____NH4++____H2O.