A:电流表的示数变小
B:电压表的示数变小
C:电灯L消耗的功率变大
D:电阻R1消耗的功率变小
细菌都是单细胞个体,细胞内没有成形的细胞核.(判断对错)
Shelly had prepared carefully for her biology examination so that she could be sure of passing it at her first ________.( )