听力文本：

Questions 1 and 2 will be based on the following news item.
问题1和问题2是关于新闻听力的9aLheLxN0tQb|0H。

Scientists have discovered the species of songbird performs a tap dance so fast that it can't be seen by the naked eye.
科学家发现了一种能够表演“踢踏舞”的鸣鸟，舞步快到肉眼难以辨识78~w^tmB9a9Qmlv(4S%n。
Researchers from Japan and Germany slow down footages of the blue capped cordon-bleu songbirds during courtship.
来自日本和德国的研究人员慢速播放了捕捉到“蓝顶蓝饰雀”求爱时舞姿的影像X.wBwVlegSGjSX!]B。
Scientists have discovered that tap dance is in the courtship performance of both male and female cordon-bleus.
科学家发现雄性和雌性“蓝顶蓝饰雀”在求爱时都会跳这种“踢踏舞”-%&[wdFMH;X。
The next step for the researchers is to try and pick
研究人员下一步要做的是确定
whether the bird's mate is moved by the sight, the sound or the vibrations of this fancy foot work.
这种鸟的求爱对象是被其动听的歌声还是漂亮的脚上功夫所征服，又或者是简单的心灵感应d7KNVwhVY(nXCW=T)R+T。
Such is the agility of the songbird's show-stopping quickstep that could only be fully appreciated in super slow-motion.
鸣鸟极快的精彩舞步只有以极慢的速度播放才能被完全欣赏到i0)*e^bBlE。

Question 1.When does the songbird perform a tap dance?
问题1 鸣鸟在什么时候会表演“踢踏舞”？
Question 2.How can songbirds' tap dance be seen?
问题2 怎样才能看到鸣鸟表演“踢踏舞”？

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