题干

如图分别是小明家上月初和月末的电能表的表盘,表盘上“1600imp/kW•h”表示每消耗1kW•h的电能,指示灯闪烁1600次,断开其他用电器,只让电饭锅单独工作2min,指示灯闪烁32次.下列选项正确的是(   )

A:小明家干路中的电流不得超过10A

B:小明家上月消耗的电能为911kW•h

C:小明家使用的电饭锅的功率为600W

D:指示灯闪烁越快,电能表所在电路消耗电能越多

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答案(点此获取答案解析)

C

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     An Iowa elementary school principal was taped onto a gym wall by his students on Friday,November 5th,2014.Principal Ryan Castle of Colorado Elementary School in Iowa,America let 27 students in his school tape him to a gym wall.He stayed up there,with his both feet suspended(悬浮) above the floor,from the morning until lunch time.

     Ryan Castle earlier promised to the students that if they sold 10,000 fall festival tickets,he agreed to be taped onto a gym wall at his school.Unexpectedly,the students had sold 11,000 fall festival tickets by October the 31st.He kept his promise and he let the students tape him onto a gym wall.

     Twenty-seven top-selling students were allowed to tape Ryan Castle up.Ryan Castle was photographed wearing a fake mustache because it was Mustache Day for the school.It was not the first time that principals were taped onto a wall in America.Ryan Castle's case comes after at least three other recent cases of school principals being taped up on the wall for a good cause.

     On last Wednesday,Jay Woller of La Crescent Elementary School in Minnesota America was taped onto a wall after $21,000 was collected by his students through fundraising.And last month,Randy Ten Pas of Hull Christian School in Iowa America was taped onto a wall with duct tape.He was taped on a 300-feet-tall building wall in his school—as a symbolic reward for students' fundraising efforts coming to $3,300.Randy Ten Pas was photographed wearing a green cap and with a drawing of the Denver Broncos logo(商标) next to him.At St.Mary Catholic School in Orange,Texas,principal Donna Darby offered a similar ticket-selling challenge to students in September.He was also taped onto the wall in the end.They kept their word and set good examples to their students.