（2012·宁波）如图甲所示，电源电压恒定，导体电阻的阻值不随温度的变化而变化。某同学把不同的定值电阻分别接入ab之间，得到ab两端的电压与接入电阻大小的关系如图乙所示。当ab间只接入电阻R₁时，电压表的示数U₁如图丙所示；当ab间只接入电阻R₂时，电压表的示数为3.6伏，电阻R₀所消耗的功率为2.43瓦。

 ____ ____  the book called Oliver Twist, I think it is really fantastic.

阅读下面这首小令，完成小题。
                                                                                                   天净沙·春
                                                                                                  【元】白朴
                                                                                                春山暖日和风，
                                                                                                阑杆楼阁帘栊，
                                                                                                杨柳秋千院中。
                                                                                                啼莺舞燕，
                                                                                                小桥流水飞红。
     【注释】① 帘栊：带帘子的窗户。②飞红：花瓣飞舞，像落花。

下列各种微粒中，属于同一种元素的是（  ）