(C)

    My name is Ben．I am eleven years old．I'm from Shenzhen．I'm in Class Six Grade Five．I'm tall and thin．I have short black hair．I am good at Maths and English．My favourite subject is English．I often read English in the morning．I often help others．So my classmates say to me，"You are a kind and helpful boy．" After school，I always do my homework first．And then I play table tennis with my brother．He likes playing table tennis too．We are good friends．

读一读，根据短文回答下列问题。

下列有关物质性质的应用正确的是（　　）

如图所示，下列判断正确的是（　　）

如图所示是电吹风的简化电路图，A是风扇的电动机、B是电热丝。要吹热风应闭合开关____ ，此时A与B____ 联在电路中。