阻值较大的电阻R₁和R₂串联后，接入电压U恒定的电路，如图所示。现用同一电压表依次测量R₁与R₂的电压，测量值分别为U₁与U₂，已知电压表内阻与R₁、R₂相差不大，则

A．U₁ + U₂＝U

B．U₁ + U₂＜U

C．U₁／U₂＝R₁／R₂

D．U₁／U₂ ≠R₁／R₂

This printer is of good quality. If it _______ break down within the first year, we would repair it at our expense.

A．would

B．should

C．could

D．might