题目内容
Why do plants grow in some places and not in others? Why does some land have so much growing on it, while other land has almost no plants growing on it at all?
To grow, plants need several things. One is warmth. In very cold places almost nothing grows. Plants also need water. In very dry parts of the Earth only a few unusual plants can grow. That’s why dry deserts everywhere are almost not covered by trees or grass.
Plants must also have a place in which to put down their roots and grow. They find it difficult to grow on hard land. The town is built on hard land. The plants here have only the soil (土壤)found between the cracks of the stones to grow in.
Another thing plants must have before they can grow is food.
What will happen if we try to make things grow on the sandy beach? A few plants, such as beach grass, will grow in sand, but most plants won’t. Even if the weather is warm enough and we water the plants each day. Many of them will die because the sand on this beach has almost no food for plants.
1.According to the passage, plants need _____ things to grow well.
A.two B.three C.four D.five
2.What does the underlined word “cracks” mean in the text?
A.缝隙 B.表面 C.夹层 D.底部
3.From the passage, we can know it is _______ for plants to grow in dry places.
A.easy B.difficult C.impossible D.important
4.The reason why most plants can’t grow on the sandy beach is that _______.
A.there isn’t enough sunlight B.there is too much water
C.it is too crowded there D.it has little food for plants
5.The passage can most probably be found in a ______ book.
A.science B.history C.travel D.math
1.C
2.A
3.B
4.D
5.A
【解析】
试题分析:这篇短文主要描述了植物正在所需要的四种自然条件。
1.根据短文描述,可知植生长需要四种条件,温度,水分,土壤和养分。故选C。
2.联系下文of the stones 石头之间,可知此处指的是缝隙,故选A。
3.根据第二段In very dry parts of the Earth only a few unusual plants can grow.描述,可知植物很难在干旱的地方生长,故选B。
4.根据最后一段Many of them will die because the sand on this beach has almost no food for plants.描述,可知选D。
5.这篇短文主要介绍了植物生长所需要的条件,故最可能出自一本科学类书籍,故选A。
考点:关于植物生长条件的说明文阅读
点评:本文浅显易懂,层次分明,学生很容易把握文章中心内容。答题中注意带着问题阅读短文,一般就能顺利找出答题依据。对于不能直接找到根据的问题注意联系上下文,根据短文中心总结出正确答案。
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Can plants eat people? Probably not,but there are many plants that eat meat.Some of them are big.And they can eat small animals.One famous meat-eating plant is the Venus flytrap(捕蝇草).
The Venus flytrap is a very strange plant.It grows in dry parts of the United States.Its leaves are like the pages of a book.They can open and close very quickly.Inside the leaves,there are three small hairs.If a fly touches one of the hairs,the leaf closes quickly.The fly cannot get out.In about half an hour,the leaf presses the fly until it is dead.Then,the plant covers the fly.Slowly,the plant eats the fly.
Why do plants do it? Most plants get what they need from the sun,the air,and the ground.In some places,the ground is very poor.It doesn’t have all these important things,
especially nitrogen(氮).Animal meat has a lot of nitrogen, so some plants eat meat to get what they need.Let’s hope that some of the bigger plants don’t get the same idea !
【小题1】The Venus flytrap is a kind of_________.
A.plant | B.animal | C.food | D.meat |
A.most parts of the world | B.some parts of Africa |
C.dry parts of the United States | D.wet parts of England |
A.all plants can eat people | B.all plants can eat animals |
C.some plants can eat people | D.some plants can eat animals |
A.挤压 | B.关上 | C.打开 | D.松开 |
A.plants are dangerous to animals |
B.animals are dangerous to plants |
C.plants want to get what they need from animal me |
D.plants want to protect themselves against animals |