Question

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

 

Answer 1

【答案】

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。