PartA ReadingAloud(模仿朗读)
Inthispart,youarerequiredtowatchavideoclipandreadafterthespeakerinthevideo.
The life of any one bloom is short.It opens in the evening and gives off a strong perfume.During the night,it closes and it stays closed for the whole of the next day,slowing flushing pink.On its second evening,it opens again.Then it closes for the last time.Why does it behave in this extraordinary way?It’s a neat way of avoiding any chance of being fertilized by its own pollen.The perfume it produces on its first evening attracts beetles.They bring with them pollen from other lilies,so this flower is about to be fertilized.But then the lily closes its petals.The beetles will be held captive inside for 24 hours.
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