Without flowers, many plants would not be able to reproduce (繁殖) and many insects would not be able to get enough food to live. Here are some interesting facts about flowers plants. ● Most plants grow flowers each year, but some take much longer. The century plant (龍舌蘭) grows only one flower and then it dies! A plant fron South America called Puya raimondii is even more amazing. It doesn’t grow a flower until it is 150 years old, and after that it dies, too. ● The smallest flowering plant in the world is thought to be the common watermeal (無根萍). Its leaves are only 1 mm across! ● Bamboo (竹子) has amazing flowering habits. There are many different kinds of bamboo in the world. And they have different flowering habits. A few flower each year, but most wait much longer. What is amazing is that all bamboo of the same kind will flower almost at the same time, where it is 6 growing! Nobody knows why. ● The white flower of the Amazon water lily (睡蓮)is the size of a football, and the flower turns purple after it has been pollinated (授粉).
    76. 判斷正誤。Many plants reproduce by flowers and provide insects with food.
    77. 完成句子。Puya raimondii grows in .
    78. What is the common watermeal’s feature?
    79. How big is the flower of the Amazon water lily?
    80. Put the underlined sentence into Chinese.
    答案：
    76. T 77. South America
    78. It’s the smallest flowering plant in the world.
    79. It is as big as a football.
    80. 令人驚訝的是，所有同類的竹子無論長在什么地方，機(jī)會(huì)都在同一時(shí)間開花
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