X₂＋2W^2＋===2X^－＋2W^3＋

Z₂＋2X^－===2Z^－＋X₂

2W^3＋＋2Y^－===2W^2＋＋Y₂

则在相同条件下，下列三个反应也能发生的是

①Y₂＋2X^－===2Y^－＋X₂

②Z₂＋2Y^－===2Z^－＋Y₂

③2W^3＋＋2Z^－===2W^2＋＋Z₂

A.只有①                                                       

B.只有②

C.①和②                                                       

D.②和③

常温下，下列三个化学反应均能发生：

X₂+2W²⁺2X^-+2W³⁺

Z₂+2X^-2Z^-+X₂

2W³⁺+2Y^-2W²⁺+Y₂

则在相同条件下，下列三个反应也能发生的是(  )

①Y₂+2X^-2Y^-+X₂

②Z₂+2Y^-2Z^-+Y₂

③2W³⁺+2Z^-2W²⁺+Z₂

A.只有①                                                               B.只有②

C.①和②                                                               D.②和③