Plants and animals usually do not live apart, as in many ways they are important to each other. Most green plants can make their own food. The food of other living things, even the food of meat-eating animals, comes directly or indirectly from green plants. For example, some people eat mutton (羊肉); mutton comes from a goat; the goats eat grass. These steps, or links, make up what is called a food chain. Without green plants, all other living things would in time die of starvation.

Plants help animals in other ways too. They furnish homes and shelter for many animals. Many birds, as you know, build their nests in trees. Deer and many other animals use bushes for shel­ter. And even man depends much upon plants for his shelter. Animals repay some of this debt by helping plants. You may be aware that many insects and some birds do important work for plants by pollinating (授粉) them. You must have also learned how animals often help plants by spreading seeds.

What is waste material for one of these kinds of life is often valuable substance for the other. For example, animals give off carbon dioxide gas when they breathe. When plants make food, they absorb this gas from the air, using the carbon and releasing some of the oxygen back into the air. The oxygen that is released, then, is again supplied to animals. Thus the cycle continues, ani­mals helping plants, and plants helping animals.

All plants and animals have their enemies. Insects eat plants; birds eat insects; other animals kill birds. But here too, animals such as birds and bats help the plants by destroying harmful in­sects. Many plants and animals are helpful to some living things but are harmful to others. Then there are other rules in nature that act as checks and balances. For example, if there are more animals in a certain area than there is food to support them, some of the animals must mi­grate or starve. In either case, the number of animals will be reduced until the balance between animals and the available food supply is restored.

These helps and hindrances (障礙) are constantly going on in the plant and animal world to achieve a balance. As long as one living thing is dependent on another, whenever the scales are tipped (使傾斜), nature takes steps to balance the scales again.

(Note: Answer the questions or complete the statements in NO MORE THAN TEN WORDS.)

81. What does the author mean by saying “Plants and animals usually do not live apart”?

82. Besides providing food and shelter for animals, plants can also ______ to help animals to live.

  

83. “Checks and balances” refers to ______ in the world of animals and plants.

84. What will be the final result if some animals migrate or starve for lack of food?

    

81. They are important to each other. / They depend on each other.

82. release oxygen

83. helps and hindrances that are going on

84. Their / Animal number will be reduced until the balance is restored.

 

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科目：高中英語(yǔ) 來(lái)源：2011屆寧夏銀川二中高三模擬英語(yǔ)卷（一） 題型：閱讀理解

Probably you have seen photos of the Grand Canyon（峽谷）, the great valley in the desert country of Arizona. But you must go there yourself to feel its true size and beauty. The Grand Canyon is one of the greatest natural wonders of the world
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The canyon looks different at different times of day, and in different seasons and weather. At sunrise and sunset the red, gold, brown and orange colors of the rocks are especially clear and bright. In winter, the canyon is partly covered with snow.
The view from the South Rim of the Grand Canyon is the best. Most visitors come here and stay in campgrounds or hotels. Every point along the canyon’s edge offers a different view.
The North rim of the Canyon is quieter. It takes all day to drive there from the South Rim because there is only one bridge across the Colorado River. On the way, you go through Navado Indian lands, and a colorful pink desert called “The Painted Desert”.
【小題1】The best way to feel the true beauty of the Grand Canyon is to________.

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【小題2】 The scene of the canyon is ________.
A．various depending on different time and places
B．a(chǎn)lmost the same
C．various depending on different time
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【小題4】 If you want to have a visit to the Grand Canyon, you’d better go to _______.
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科目：高中英語(yǔ) 來(lái)源：2010年山東省新泰一中北校區(qū)高一第一次月考英語(yǔ)卷 題型：閱讀理解

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【小題4】Where do the Hadza live in wet weather?
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【小題1】 What ate the requirements for the healthy growth of rose?

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科目：高中英語(yǔ) 來(lái)源：2012年人教版高中英語(yǔ)必修一Unit5練習(xí)卷（解析版） 題型：閱讀理解

Language is always changing. In a society where life continues year after year with few changes, the language does not change either. The earliest known languages had difficult grammar but a small, limited vocabulary. Over the century, the grammar changed, and the vocabulary grew. For example, the English and Spanish people who came to America during the sixteenth century gave names to all the new plants and animals they found. In this way, hundreds of new words were introduced into English and Spanish vocabularies. Today life is changing very fast, and language is changing fast too.

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B．words and easy grammar

C．words but no grammar

D．grammar but not many words

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A．stay exactly the same

B．change a great deal

C．change only a little

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With little business knowledge, the students had to learn new skills as the leaders of different departments, such as public relations （PR）, sales and marketing. They persuaded a joint Sino-French company near their school to give them training in business management.

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The 16-year-old was elected as PR manager thanks to her talent for speaking. She is also in charge of after sales service, dealing with complaints and providing suggestions.

As the head of the company, CEO Shi has a lot more to think about. First of all, she has to learn how to make her colleagues work efficiently（高效地） as the company only opens at weekends due to all their studies.

“It makes the company more formal，” she said.

1.The purpose of opening the company is to         .

A．earn money for their education fees.

B．spread love and culture with seeds.

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D．collect money to open a Hope School.

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A．Communication skills and teamwork 。

B．Creative and critical thinking.

C．Educational back ground.

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A．Selling seeds.

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D．To make her colleagues work efficiently.

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B．the company is over-night successful.

C．the company sells fresh flowers and old books

D．the company gets much help from other company selling seeds.

 

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