英语阅读理解 in the sea there are many islands,

题目

英语阅读理解 in the sea there are many islands,
In the sea there are many islands.In its warm water there are some little ones.We call them "Coral islands".
A coral island is very nice to look at.It looks like a ring of land with trees,grass and flowers on it.One part of the ring is open to the water.There is a little round lake inside the island.
If you look into this lake,you will see beautiful coral.You may think they are flowers.
If you look at a piece of coral,you will see many little holes in it.In each of these holes a very small sea animal has lived.These sea animals make the coral.
They began to build under the water.Year after year,the coral grew higher and higher.At last it grew out of the water.
Then the sea brought it into small trees and something else.After some years,these things changed into earth.Sometimes the wind brought seeds to this earth.Sometimes birds flew over it and brought seeds to the island.
The little seeds grew.In a few years there

答案

56.C.a ring of land D
57.D.sea animals
58.A.The wind and birds brought them to the coral islands.
59.C.Small workers can do big things if they work hard and work a long time.