题目

请先阅读下面的短文,掌握其大意,然后根据短文内容从下面方框内的七个选项中选择五个还原到文中,使短文意思通顺、结构完整。 No matter who you are and where you live, the most important thing is what kind of person you are 【1】Among them, the following qualities are the most helpful ones. Have a positive attitude. Life is not always a bed of roses. When you face difficulties,don,t lose heart. Do you know what can help you overcome difficulties? It’s your attitude. Cheer up! 【2】When you smile in front of it, it will also smile at you. 如图甲所示,透明玻璃壳内有一个标有“6V  3W”字样的小灯泡L和一个由某种金属材料制成的电阻R,A、B、C是其外露的三个接线柱.图乙为电源电压恒为6V的实验装置,其中M、O、N为三个接线柱.用导线先把,M、N分别与A、B相连,再把O与M相连,闭合开关S,移动滑动变阻器的滑片P,测得多组电压表与电流表的读数,并绘制成如图丙所示的图线.求: (1)小灯泡L正常发光时的电阻. (2)在原来连线的基础上,再用导线连接A、C,闭合开关S,当把滑片P移到最左端时,电流表的示数是多少? (3)拆除上述在A、B、C、M、O、N间所有连接导线.把M、O、N分别与A、B、C相连,闭合开关S,电流表示数为0.35A,此时滑动变阻器连入电路的电阻为2Ω,小灯泡消耗的实际功率为多少?
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