The singer was about to descend a staircase at Florida's Amway Arena during a performance of Ring The Alarm, when she lost her balance and fell head-first down 15 steps.

But Knowles is adamant mastering the art of moving in high heels on stage is "second nature", despite getting a heel caught in her trenchcoat which caused the fall.

She says, "The easiest part is dancing in the heels. I don't even think about it anymore; it's just second nature. But it is difficult to dance, to sing at the same time. I have to make sure I'm in shape and I'm hydrated... I don't want to wear myself out and get exhausted.

After Tuesday's accident, Knowles pleaded with the audience not to post any videos of the accident online; however one fan surrendered footage captured on a camera phone to local TV station WKMG-TV.

　　听力和书面表达通常是我们学生的弱项，希望大家在英语朗读的方法下，并结合实际情况安排练习，不要一味模仿别人，要在练习过程中及时总结经验，包括时间安排等，让自己的考研英语水平得到一个很大的提升！