the bananas to go bad, he preferred to sell them at half price. A．Rather than allowing B．Rather than to allow C．More than allow D．Rather than allow 题目和参考答案——青夏教育精英家教网—

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 plants. Flowering plants can make seeds. 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（胚芽）。 Spores are 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 are all on wet and shady places， they usually grow into new plants.

The main idea of the first paragraph is that ______.

A. plants are important for life B. plants cannot grow without air

C. there are many plants in the world D. we can not live without water

Plants can make food from______.

A. flower， water and air B. water， sunlight and air

C. air， water and soil D. air， sun and light

What can we infer（推断） from the passage ？

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

This passage may be taken from______.

A. a medicine book B. a novel C. a science magazine D. an experiment report

The underlined word “protected” in the third paragraph can be replaced by ______.

A. damaged B. polluted C. prevented D. guarded

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 plants. Flowering plants can make seeds. 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（胚芽）。 Spores are 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 are all on wet and shady places， they usually grow into new plants.
【小题1】The main idea of the first paragraph is that ______.

A．plants are important for life	B．plants cannot grow without air
C．there are many plants in the world	D．we can not live without water

【小题2】Plants can make food from ______.

A．flower， water and air	B．water， sunlight and air
C．air， water and soil	D．air， sun and light

【小题3】What can we infer（推断） from the passage ？

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4】This passage may be taken from ________.

A．a medicine book	B．a novel
C．a science magazine	D．an experiment report

【小题5】The underlined word “protected” in the third paragraph can be replaced by ______.

阅读下面的短文，并根据短文后的要求答题。(请注意问题后的词数要求)

[1]Some expressions describe people who are important，or who at least think they are．One such expression is bigwig．

[2]In the seventeenth century，important men in Europe began to wear false hair，called wigs．As years passed，wigs began to get bigger．The size of a man’s wig depended on how important he was． The more important he was—or thought he was一．Today，the expression bigwig is used to make fun of a person who feels important．People never tell someone he is a bigwig．They only use the expression behind his back．

[3]Big wheel is another way to describe an important person．A big wheel may be the head of a company，a political leader，a famous movie star．They are big wheels because they are powerful．What they do affects many people．Big wheels give the orders．Other people carry them out．As in many machines，a big wheel makes the little wheels turn．Big wheel became a popular expression after World WarⅡ．It probably comes from an expression used for many years by people who fix parts of cars and trucks．They said a person roiled a big wheel if he was important and had influence．

[4]The top of something is the highest part．So it is not surprising that top is part of another expression that describes an important person．The expression is top banana．A top banana is the leading person in a comedy show．The funniest comedian is called the top banana．The next is second banana．And so on．Why a banana?A comedy act in earlier days often included a part where one of the comedians would hit the others over the head with a soft object. The object was shaped like the yellow fruit：the banana．Top banana still is used mainly in show business．Yet the expression can also be used to describe the top person in any area．

1.What’s the best title of the text ?(no more than 7 words)

2.Fill in the blank in Paragraph 2 with proper words. (no more than 6 words)

3.How and when is “bigwig” used in a proper way nowadays?(no more than 20 words)

4.Complete the following sentence with proper words from Paragraph 3 . (no more than 3 words)

As a big wheel makes the little wheels turn in many machines, powerful people give orders for others to .

5.Translate the underlined sentence in Paragraph 4 into Chinese.

Plants are very important living things. Life could not go 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. So 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 plants.

Flowering plants can make seeds. 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 don’t grow from seeds. They grow from spores(孢子). Spores are so small and light that they can float in the air. We may say that spores are quite the same as the seeds. When these spores fall on wet and shady places, they usually grow into new plants.

1.The main idea of the passage is that __________.

A．plants are important for life

B．plants cannot grow without air

C．there are many plants around us

D．we cannot live without water

2.Which of the following is NOT TRUE?

A．Plants can be divided into main types: flowering plants and non-flowering plants.

B．All fruits have seeds in them

C．Seeds are protected by the fruits.

D．Some plants grow from spores.

3.The word “non-flowering ” in this passage means __________.

A．开花的

B．有花的

C．多花的

D．不开花的

As bananas ripen， the green skin turns ye11ow gradually. Chemical changes occur in the f1esh of the fruit as well：starch（淀粉）changes to sugar；pectin（果胶）breaks down，losing its stiffness； and the f1esh softens.

Is ripening fruit a self－contained system， or is the rate of these changes affected by the environment？ We designed the experiment below to see if different atmospheres， produced by different packaging， affected the rate of ripening. You will vary the atmosphere surrounding unripe bananas and observe the effect on the ripening process。

Now set up the bananas in their environments as follows：

1. Put two green bananas in a paper bag and fo1d the top over to seal out the air.

2．Put one green banana and the very ripe banana in the other paper bag and fold over the top.

3. Put two green bananas in a plastic bag and seal it.

4. Wrap（包）one green banana tightly in a plastic bag.

5. Leave one green banana exposed to the air.

Leave the fruit a1one or five days to ripen. Ripening fruit“breathes”． This means that it takes up oxygen and gives off C02. Oxygen is extremely important and necessary for the chemical reactions involved in ripening. In addition, ripening fruit gives off another gas, called ethylene（乙烯）. Not only is ethylene a product of ripening fruit, it also promotes the further ripening of the fruit.

Paper bags tend to keep the ethylene in, but they allow oxygen and ethylene to pass through slowly. Plastic bags do not allow the free flow of oxygen or ethylene. In this experiment, the green banana in paper bag with the ripe banana should ripen most quickly. The green bananas in the paper bag should ripen faster than the bananas in the plastic bag. The banana left exposed to air has an unlimited supply of oxygen, so it will turn brown most quickly. You will notice that the side of this banana that rests on the counter will ripen more quickly than the other sides, because it has the

closest contact（接触）with its own ethylene. The banana that is tightly wrapped in plastic has no oxygen supply and should ripen most slowly. Now can you see why bananas are sealed in plastic in many supermarkets？

72. What makes the green banana in Bag 2 ripen more quickly than the ones in Bag 1？

A. Ethylene from the very ripe banana. B. The free flow of oxygen or ethylene

C. C02 from the very ripe banana. D. The limitation of oxygen supply.

73. How can we slow down the ripening of bananas exposed to the air？

A. To rest them on the counter. B. To keep them in the basket.

C. To put them on the ground. D. To hang them up from the ceiling

74. It can be concluded from the passage that .

A. the ripening banana is a self-contained system

B. the rate of ripening bananas is affected by the environment

C. wrapped bananas experience no chemical changes to ripen

D. ripening bananas give off oxygen, C0, and ethylene

75. Why are bananas sealed in plastic in many supermarkets？

A. To make them ripen more quickly. B. To make them ripen more slowly.

C. To make banana flesh soften. D. To turn green bananas yellow.

A．Rather than allowing	B．Rather than to allow
C．More than allow	D．Rather than allow

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