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

 

According to a new Ministry of Education (教育部) survey, student safety has become a big problem. Nearly 50 percent of students say they are worried about robbery on the way to and from school. Now in many big cities in China, some school has taught an unusual lesson: self– protection. Students like this lesson as there are no exams or boring classes. And they can learn how to save lives and know how to stop danger before it really happens.

Chen Haoyu, a teacher at Beijing No.25 Middle School and a self–protection expert, gives young students advice on how to deal with danger.

If you are robbed

Keep calm. If you cannot cry for help or run away, give the robber your money. Try to remember what the robber looks like and tell the police.

If you are in a traffic accident

If you are hurt by a car, take down the car number; if it is a bicycle, try to contact your parents before you let the rider go. This is because you don’t know how seriously you are hurt.

If it is raining hard and there is lightning

Don’t stay in high places and keep away from trees.

When there is a fire

Get away as fast as you can. Put wet things on your body and try and find an exit. Do not take the lift!

If someone is drowning(溺水)

If you can’t swim, don’t get into the water. Cry out for help.

Remember that danger is never as far away as you think. Take care of yourself at all times!

1.The underlined word “contact” means _______.

A.end up           B.wait for           C.search for         D.get in touch with

2.If your house is on fire, you must _____.

A.put dry things on your body

B.run quickly and take the lift

C.take everything you have and then run away

D.run away and find an exit as quickly as you can

3.What’s the best title for this passage?

A.Self- protection                         B.How to take care of yourself

C.The popular lesson                      D.An interesting lesson

 

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网