E 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,wat 题目和参考答案——青夏教育精英家教网—

题目内容

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（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（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.

72. 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

73. 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

74. What can we infer 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

75. This passage may be taken from______.

A. a medicine book B. a novel

C. a science magazine D. an experiment report

【小题1】A

【小题2】B

【小题3】D

【小题4】C

练习册系列答案

宏翔文化3年中考2年模拟1年预测系列答案

初中毕业生升学模拟考试系列答案

过好寒假每一天系列答案

寒假作业中国地图出版社系列答案

中考复习攻略南京师范大学出版社系列答案

相关题目

阅读理解

　　Tom Dyson tried to find out what his new machine could do. One day he fixed the small box to a flowering plant that was growing in a pot. He didn't say anything at all, but he began to think some cruel thoughts.

　　“I'm going to cut off these flowers. They're getting old and ugly. So I'll cut them off…”

　　The needle on the machine climbed quickly from zero to 8, then 10, 12, 15. It stopped at 17. The plant was in trouble! Something was worrying it. Was it fear or sadness? The thought of being cut? The flowers bent their heads. They suddenly looked old and tired, and Tom felt sorry for them.

　　“No, no!” he cried.“I won't cut you. You're my friends. I just want you to grow and be lovely. I'll take you outside, into the sunshine. You'll like that, won't you?”

　　The flowers lifted their heads slowly and seemed to smile at him. The needle returned to zero. Tom put away the machine, picked up the plant and walked outside. It was very nice in the garden that morning.

　　All plants enjoy their owner's love and care and kindness. They know the sound of their voice. They also seem to understand people's thoughts. So if you have flowers of your own, think about them with love. They will return your kindness in the only way they can: they will grow strong and beautiful.

1．Choose the right order of the events given in the passage.

[　　]

a．The needle pointed to 17.

b．Tom felt sorry for the flowers.

c．Tom thought of cutting off the flowers.

d．The flowers looked old and tired.

e．Tom fixed the machine to a plant.

f．Tom took the plant outside.

g．The needle returned to zero.

h．Tom cried, “I won't cut you.”

[　　]

A．e; a; g; h; d; b; c; f

B．c; e; d; a; b; h; g; f

C．e; c; a; d; h; b; f; g

D．e; c; a; d; b; h; g; f

2．The only way in which plants can show their love is ________.

[　　]

A．enjoying their owner's love

B．bringing up nicely

C．holding up their heads

D．smiling at their owners

3．According to the passage, which of the following is true?

[　　]

A．Tom wanted to cut off the flowers.

B．Tom said nothing, but the flowers could understand him.

C．The machine didn't work properly.

D．The flowers were getting bad - looking

信息匹配（共5小题；每小题2分，满分10分)

A. Agra Fort

Near the gardens of the Taj Mahal stands the important 16th-century Mughal monument known as the Red Fort of Agra. This powerful fortress of red sandstone encompasses, within its 2.5-km-long enclosure walls, the imperial city of the Mughal rulers. It comprises many fairy-tale palaces, such as the Jahangir Palace and the Khas Mahal, built by Shah Jahan; audience halls, such as the Diwan-i-Khas; and two very beautiful mosques.

B. Taj Mahal

Taj Mahal is regarded as one of the eight wonders of the world, and some Western historians have noted that its architectural beauty has never been surpassed. The Taj is the most beautiful monument built by the Mughals, the Muslim rulers of India. Taj Mahal is built entirely of white marble. It was constructed over a period of twenty-two years, employing twenty thousand workers. It was completed in 1648 C.E. at a cost of 32 Million Rupees.

C. Keoladeo National Park

This former duck-hunting reserve of the Maharajas is one of the major wintering areas for large numbers of aquatic birds from Afghanistan, Turkmenistan, China and Siberia. Some 364 species of birds, including the rare Siberian crane, have been recorded in the park.

D. Humayun's Tomb, Delhi

This tomb, built in 1570, is of particular cultural significance as it was the first garden-tomb on the Indian subcontinent. It inspired several major architectural innovations, culminating in the construction of the Taj Mahal. The gardens also contain the red-and-white sandstone and black-and-yellow marble tomb of Humayun’s wife and the tomb of Humayun’s barber.

E. Grand Canyon National Park

The Grand Canyon is perhaps the most awesome sight in the United States--and one of the wonders of the world. Much of the park's beauty is related to its geology and ecology. Schmidt explores the shape of the land, its plants and animals, and its human history. A fascinating book that everyone visiting the Grand Canyon should read. The Skywalk at Grand Canyon West is really exciting.

F. Sundarbans National Park

The Sundarbans covers 10,000 sq. km of land and water (more than half of it in India, the rest in Bangladesh) in the Ganges delta. It contains the world's largest area of mangrove forests. A number of rare or endangered species live in the park, including tigers, aquatic mammals, birds and reptiles.

请阅读以下旅游者的信息，然后匹配旅游者和他/她拟旅游的景点。

Carina is fond of art and likes travelling very much. In order to take part in the following exhibition, she wants to take some photos of birds from all over the world, especially the rare Siberian crane. In the meanwhile, she doesn’t want to spend too much money.

Daisy’s major is biology. She is interested in studies of tigers in India. Before graduation, she needs to write an essay on the tiger. She hears that it is one of the largest tiger populations of any of India’s parks. And so she wants to go there to do some research.

Alexander is a college student of Physics. He learns that this canyon is a gift from past generations that goes beyond what we experience. He is looking forward to going there and experiencing the Skywalk in the park.

Sammy majors in history. He will visit it again this summer. He says it’s built entirely of white Marble and is one of the eight wonders of the world. Its beauty is beyond description, particularly at dawn and sunset. It seems to glow in the light of the full moon. On a foggy morning, the visitors experience it as if suspended when viewed from across the Jamuna river.

Nancy comes from the history department. Last summer she visited the ancient markets of Agra and this year she wants to visit it again. Not long ago she said: “Arriving at the Delhi airport, we representatives were warmly received. Our tirdness flew in seconds by the traditional welcome that we got at the hotel’s reception.” The next day they visited the famous tomb.

Plants can’t communicate by moving or making sounds, as most animals do. Instead, plants produce volatile compounds, chemicals that easily change from a liquid to a gas .A flower’s sweet smell, for example, comes from volatile compounds that the plant produces to attract insects such as bugs and bees.

Plants can also detect volatile compounds produced by other plants. A tree under attack by hungry insects, for instance, may give off volatile compounds that let other trees know about the attack, In response, the other trees may send off chemicals to keep the bugs away- or even chemicals that attract the bugs’ natural enemies.

Now scientists have created a quick way to understand what plants are saying: a chemical sensor(传感器) called an electronic nose. The “e-nose” can tell compounds that crop plants make when they’re attacked. Scientists say the e-nose could help quickly detest whether plants are being eaten by insects, But today the only way to detect such insects is to visually inspect individual plants. This is a challenging task for managers of greenhouses, enclosed gardens that can house thousands of plants.

The research team worked with an e-nose that recognizes volatile compounds. Inside the device, 13 sensors chemically react with volatile compounds. Based on these interactions, the e-nose gives off electronic signals that the scientists analyze using computer software.

To test the nose, the team presented it with healthy leaves from cucumber, pepper and tomato plants, all common greenhouse crops. Then the scientists collected samples of air around damaged leaves from each type of crop. These plants had been damaged by insects, or by scientists who made holes in the leaves with a hole punch (打孔器).

The e-nose, it turns out, could identify healthy cucumber, pepper and tomato plants based on the volatile compounds they produce. It could also identify tomato leaves that had been damaged. But even more impressive, the device could tell which type of damage by insects or with a hole punch had been done to the tomato leaves.

With some fine tuning, a device like the e-nose could one day be used in greenhouses to quickly spot harmful bugs, the researchers say. A device like this could also be used to identify fruits that are perfectly ripe and ready to pick and eat, says Natalia Dudareve, a biochemist at Purdue University in West Lafayette, Ind. who studies smells of flowers and plants. Hopefully, scientists believe, the device could bring large benefits to greenhouse managers in the near future.

49. We learn from the text that plants communicate with each other by______.

A. making some sounds B. waving their leaves

C. producing some chemicals D. sending out electronic signals

50. What did the scientists do to find out if the e-nose worked?

A. They presented it with all common crops..

B. They fixed 13 sensors inside the device.

C. They collected different damaged leaves.

D. They made tests on damaged and healthy leaves.

51. According to the writer, the most amazing thing about the e nose is that it can ______.

A. pick out ripe fruits

B. spot the insects quickly

C. distinguish different damages to the leaves

D. recognize unhealthy tomato leaves

52. We can infer from the last paragraph that the e-nose_____.

A. is unable to tell the smell of flowers

B. is not yet used in greenhouses

C. is designed by scientists at Purdue

D. is helpful in killing harmful insects

E
Camping wild is a wonderful way to experience the natural world and, at its best, it makes little environmental influence. But with increasing numbers of people wanting to escape into the wilderness, it is becoming more and more important to camp unobtrusively（不引人注意地）and leave no mark.
Wild camping is not permitted in many places, particularly in crowded lowland Britain. Wherever you are, find out about organizations responsible for managing wild spaces, and contact them to find out their policy on camping and shelter building. For example, it is fine to camp wild in remote parts of Scotland, but in England you must ask the landowner’s permission, except in national parks.
Camping is about having relaxation, sleeping out door, experiencing bad weather, and making do without modern conveniences. A busy, fully-equipped campsite（野营地）seems to go against this, so seek out smaller, more remote places with easy access to open spaces and perhaps beaches. Better still, find a campsite with no road access: walking in makes a real adventure.
Finding the right spot to camp is the first step to guaranteeing a good night’s sleep. Choose a campsite with privacy and minimum influence on others and the environment. Try to use an area where people have obviously camped before rather than creating a new spot. When camping in woodland, avoid standing dead trees, which may fall on a windy night. Avoid animal runs and caves, and possible homes of biting insects. Make sure you have most protection on the windward side. If you make a fire, do so downwind of your shelter. Always consider what influence you might have on the natural world. Avoid damaging plants. A good campsite is found, not made—changing it should be unnecessary.
57. You needn’t ask for permission when camping in ________.
A. most parts of Scotland                B. national parks in England
C. crowded lowland Britain          D. most parts of England
58. The author thinks that a good campsite is one ________.
A. used previously                    B. with easy access
C, with modem conveniences           D. far away from beaches
59. The last paragraph mainly deals with ________.
A. protecting animals                          B. building a campfire
C. camping in woodland                            D. finding a campsite with privacy
60. The passage is mainly about ________.
A. the protection of campsites                 B. the human influence on campsites
C. the importance of wild camping      D. the dos and don’ts of wild camping

Earlier this year, the Environmental Protection Agency proposed a stricter nationwide health standard for smog-causing pollutants that would bring substantial benefits to millions of Americans. With a final rule expected by the end of this month, some opponents, mainly from industrial and oil-producing states, are pushing back. They say investments required to produce cleaner air are too expensive and not scientifically justified.
Lisa Jackson, the E.P.A. administrator, needs to stick to her guns. This is only the first of several political tests to come this fall, as she also seeks to tighten rules governing individual pollutants like mercury and global warming gases like carbon dioxide.
The health standard she is proposing covers ground-level ozone, commonly known as smog, which is formed when sunlight mixes with pollutants from factories, refineries, power plants and automobiles. Ozone is a major health threat, contributing to heart disease and various respiratory (呼吸道的) problems.
Ms. Jackson’s proposal—to reduce the permitted level of smog in the air from the current 75 parts per billion to between 60 parts per billion and 70 parts per billion—is sensible, no matter what industry’s defenders may claim. It had been recommended by the agency’s independent scientific panel but rejected by the Bush administration, which proposed a weaker standard.
Industry will have to make investments in cleaner power plants, and new technologies may be required. As it is, about half the counties that monitor ozone levels are not yet in compliance with current standards, let alone the proposed standard.
Fears about burdening industry raised by critics like George Voinovich, a Republican of Ohio, and Mary Landrieu, a Democrat of Louisiana, cannot be dismissed out of hand, especially in the middle of a recession (萧条). But the health benefits, E.P.A. says, far outweigh the costs, and the time frame for compliance (服从) is generous.
【小题1】Why are some people strongly against a stricter limitation of smog-caused pollutants?

A．Because they have to live a poorer life.

B．Because they think they have to spend more money.

C．Because they hold different political view.

D．Because they want to make more money.

【小题2】 What does Ms Jackson propose to do?

A．To reduce the permitted smog level as much as possible.

B．To raise the permitted smog level as much as possible.

C．To keep the permitted smog level from 60 to 70 to 75 parts per billion.

D．To lower the permitted smog level from 75 to 60 to 70 parts per billion.

【小题3】What is the attitude of the author to the smog-controlling issue?

A．Objective.

B．Subjective.