在如图甲的电路中，电源电压为 9V 且保持不变，电流表的规格为“0～0.6A”，电压表的规格为“0～15V”，灯泡上标有“6V 6W”字样，灯泡电流随 电压变化关系如图乙所示，为保证电路安全，下列说法正确的是（ ）

 1996年在英国出生的克隆羊多莉与生它的母羊长相不同，而与提供细胞核的母羊几乎一样，这说明细胞中的____存在于细胞核中．多莉由小长大，是细胞生长、____和细胞分化的结果．

The lessons given by Mr Li are always interesting and________．

    When I left for the United States to study. I had butterflies in my stomach. I was nervous because I was going to ____ new place with new people and new customs. I couldn't even understand ____(they)language. Everything was different ____ my own country. There was nobody that I could talk to. I just had my husband, ____ was a new person for me, too.

    It was a sad moment when I had to say goodbye to my family and friends. I didn't want ____(leave)my hometown because I ____(grow) up there and had wonderful ____(memory) of the place. So, ____ (think)about all these changes made me nervous and I was ____(worry)about my new life. But studying abroad was a decision that I made myself. I had to continue and accept the challenge. I looked forward to ____(visit)my family in the summer vacation.

某同学在研究电容、电感对恒定电流与交变电流的影响时，采用了如图所示的电路，其中L₁、L₂是两个完全相同的灯泡，已知把开关置于3、4时，电路与交流电源接通，稳定后的两个灯泡发光亮度相同，则该同学在如下操作过程中能观察到的实验现象是（   ）