小明将微风电风扇与小灯泡按如图所示的电路连接并进行实验,用手快速拨动风扇叶片,这时发现小灯泡发光,微风电风扇居然变成了“发电机”.关于该实验,下列说法正确的是( )
A:电风扇发电过程是把电能转化为机械能
B:电风扇发电的原理是通电导线在磁场中受到力的作用
C:小灯泡发光是把光能转化为电能
D:电风扇发电的原理是电磁感应
阅读理解
Mom: What would you like for dinner, Amy?
Amy: I'd like some noodles and vegetables.
Mom: What about you, Mike?
Mike: I'd like some soup and two hamburgers.
Mom: Would you like some dessert(甜品)?
Amy:Yes, I'd like some ice-cream: How about you, Mike?
Mike: No, thanks.
—Take a map of Wuxi with you. You'll find it of great _________ in helping you to get round Wuxi.
小刚做了如下实验: