[填空题]
A 35-g glass thermometer reads 21-1x lc5; rkrmsy8lju.hm (h)kp .uq7o.6zcncd 7ao60 g a9gtd y(c31h2--olgkx$^{\circ} C$ before it is placed in 135 mL of water. When the water and thermometer come to equilibrium, the thermometer reads 39.2$^{\circ} C$ . What was the original temperature of the water?$T_{iH_2O}$ = $^{\circ}C $