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 (龙舌兰) grows only one flower and then it dies! Even more amazing is a plant from South America called Puya raimondii. 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 (无根萍). Its leaves are only 1mm across!
● Bamboo 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 (睡莲)is the size of a football, and the flower turns purple after it has been pollinated (授粉).
● The Caucasian lime can grow in Britain. Its flowers are poisonous to bees. If they touch the flowers, they will die.
Which of the following plants needs the longest time to grow flowers?
A.The bamboo. | B.The watermeal. |
C.The Puya raimondii. | D.The Caucasian lime. |
From the fourth paragraph we know that ________.
A.bamboo is the most amazing plant in the world |
B.all kinds of bamboo grow beautiful flowers every year |
C.the flowers of a bamboo is as large as the size of a football |
D.the same kind of bamboo will grow flowers at the same time |
The Amazon water lily’s white flowers can ________.
A.change color | B.grow long |
C.kill bees | D.attract insects |
The underlined word “poisonous” in the last paragraph means “________” in Chinese.
A.有香味的 | B.有毒的 |
C.有吸引力的 | D.有营养的 |
Which of the following is TRUE according to the passage?
A.Many insects get their food from flowers. |
B.After growing a flower, the century plant will grow better. |
C.The common watermeal has the smallest leaves in the world. |
D.Bees will die if they touch the leaves of the Caucasian lime. |