题目内容

c________


  1. A.
    air
  2. B.
    are
  3. C.
    ear
  4. D.
    ere
B
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Plants are very important living things. Life could not go on if there were no plants. This is because plants can make food from air, water and sunlight. Animals and man cannot make food from air, water and sunlight. Animals get their food by eating plants and other animals. Therefore animals and man need plants in order to live. This is why we find that there are so many plants around us.
If you look carefully at the plants around you, you will find that there are two kinds of plants: flowering plants and non-flowering(不开花的) plants.
Flowering plants can make seeds(种子). The seeds are protected by the fruits. Some fruits have one seed, some have two, three or four, and some have many seeds. But a few fruits have no seeds at all. An example of a fruit without seeds is the banana fruit.
Most non-flowering plants do not grow from seeds. They grow from spores(孢子). Spores are very, very small. Some spores are so small and light that they can float in the air. We may say that spores are quite the same as seeds. When these spores fall on wet and shady(阴凉的) places, they usually grow into new plants.
【小题1】What fact does the passage lead you to believe?

A．Of all living things, animals are most important.
B．Spores are seeds.
C．All fruits of flowering plants have seeds.
D．Without plants, man will die out.
【小题2】The paragraph following the passage will be about ________.
A．how plants can make food from air
B．how spores grow into new plants
C．why some plants have no seeds
D．why non-flowering plants are more important than flowering plants
【小题3】This passage is most likely to be taken from ________.
A．a story bookB．a novel
C．a science magazineD．a laboratory report


                 Beijing Travel Company
Beijing-Singapore: four days in Singapore
Website; www. beijingtour. com
Telephone: 010一62617788
Miramber Hotel
Restaurant & Cafe, Swimming pool, KTV, Clothing store, Reading room
Travel Plans
▲    Day 1:
Morning: land at Singapore Changi Airport
Afternoon: take a bus tour of the island
Evening: have a party in the KTV
▲    Day 2:
Morning: visit the Handicraft Center and the National Museum
Afternoon: take the car to Sentosa Island (圣淘沙岛)
▲    Day 3:
Morning: take a walking tour of old Singapore, including Chinatown
Afternoon: take a boat trip around the island
▲    Day 4:
Morning: free time for shopping
Evening: return by air
Date of Departure(出发)           Price
August 16, 2012                  ￥3,220
August 17. 2012                  ￥3,100
August 18, 2012                  ￥2, 950
Au gust 19, 2012                  ￥3,150
【小题1】 What's the telephone number of Beijing Travel Company?
A．010一62618877.B．010一62617788.
C．010一61627788.D．010一61628877.
【小题2】 Travelers in this tour group will go to Singapore______.
A．by airB．by trainC．by busD．by sea
【小题3】On the second day，travelers in this group can______.
A．visit Sentosa IslandB．travel around by boat
C．go to ChinatownD．have a party in the KTV
【小题4】. When can travelers shop finely during the tour?
A．On the fast day.B．On the second day.
C．On the third day.D．On the last day.
【小题5】. If you only want to spend less than 3, 000 yuan，you can choose______ as your
departure date.
A．August 16B．August 17
C．August 18D．August 19

A Simple Scientific Experiment

Below is a description of a single scientific experiment. It shows us how iron reacts ( 反应) with air and with water.
Aim : To find out if iron rusts( 生锈) (a) in dry air ; (b) in water that has no air in it ( air- free water) ; (c) in ordinary water.
Materials : 3 clean iron nails ( 铁钉) ; test tubes ; test tube holder ; cotton wool ; oil ; Bunsen burner.
Iron in dry air
Method
(1)Put some iron nails at the bottom of a test tube.
(2)Push some cotton wool down the tube.
(3)Leave the tube for one week.
Result
After one week, the nails have not rusted.
Conclusion
Iron does not rust in dry air.
Iron in air-free water
Method
(1)Half-fill a test tube with water.
(2)Boil the water for three minutes. (This makes sure there is no air in the water.
(3)Put two or three clean nails in the water.
(4)Add some oil to the water. (This will keep air out of the water.)
(5) Leave the tube for one week.
Result
The nails do not rust in the tube with air-free water.
Conclusion
Iron does not rust in air- free water.
Iron in ordinary water
Method
(1)Half –fill a test tube with water and add two or three clean nails.
(2)Leave the tube for one week.
Result
The nails rust in the tube with ordinary water.
Conclusion
Iron rusts in ordinary water. (238 words)
【小题1】In the first part of the experiment the cotton wool is most probably used to ______________.
A．keep the air dryB．keep the tube wet
C．make the nails rustD．keep the tube clean
【小题2】What are necessary steps to make sure the water in the tube is air free?
①Leave half a tube of water in it              
②Boil the water for some time
③Put some clean iron nails in the tube           
④Add some oil to the water
A．①②B．①③C．②③D．②④
【小题3】We can conclude from the experiment that only ____________ makes iron rusty.
A．dry airB．cotton woolC．ordinary waterD．air-free water
阅读理解。
　　Air is all around us. It is around us when we walk and play. From the
moment we are born, air surrounds (包围) us. When we sit down, it is around
us. When we go to bed, air is also around us. No matter where we are on the
earth, air surrounds us. We live in air.
　　All living things need air.  Living things cannot live without air.  We can go
without food or water for a few days, but we cannot live for more than a few
minutes without air. When we are asleep, we need less air.
1. Air is _____ around us.
A. always              
B. often
C. sometimes            
D. never
2. People can live without food or water for _____.
A. many years          
B. a few years
 C. a few months          
D. a few days
3. _____ can live for more than a few minutes without air.
A. Everybody            
B. Not everybody
C. Somebody            
D. Nobody
4. When we are sleeping we _____.
A. need much air
B. don't need so much air
C. need more and more air
D. need no air at all
5. The main idea of the article is that _____.
A. air is as important to us as food and water
B. air is much more important to us than food and water
C. air is around us and we can't live without it
D. air is far away from us and we can't get it

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