.
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.
54. 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
55. 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
56. This passage may be taken from______.
A. a medicine book B. a novel
C. a science magazine D. an experiment report
57. The underlined word “protected” in the third paragraph can be replaced by ______.
A. damaged B. polluted C. prevented D. guarded
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科目:高中英語 來源:2015屆河南省高一下學(xué)期第一次月考英語試卷(解析版) 題型:閱讀理解
Nearly all our food comes from the soil. Some of us eat meat, of course, but animals live on plants. If there were no plants, we would have no animals and no meat. So the soil is very necessary for life. The top of the ground is usually covered with grass or other plants. There may be dead leaves and dead plants on the grass. The waste matter (糞) from animals also falls on it.
All soil needs food. If we do not give it any, the plants will be weak. Farmers found that animals’ waste is the best food for the soil, but chemical fertilizers (化肥) are also very useful. The same crop (莊稼) should not be grown in the same place every year; it’s better to have a different crop. A change of crop and the use of a good fertilizer will keep the land good.
1.What would happen first without plants?
A.People would have more crops. B.Animals would die.
C.There would be more food. D.There would be less soil.
2.What does the writer tell us in the first paragraph (段落)?
A.Leaves, plants, grass and waste live on each other.
B.There would be no animals without meat.
C.There would be no plants without animals.
D.People, animals, plants and soil live on each other.
3.Which is the best food for soil in the field?
A.Chemical fertilizers B.Plants and grass. C.Animals’ waste. D.Different crops.
4.Why do we often grow a different crop in the same place every year?
A.Because we can keep the soil rich this way.
B.Because we don’t have enough land.
C.Because we want to have a different food.
D.Because we do this as a habit.
5.What is the best title for the passage?
A.Soil and Waste B.Plants and Animals C.Food and Waste D.Soil and Food
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科目:高中英語 來源:2014屆浙江省高一下學(xué)期期末考試英語試卷(解析版) 題型:閱讀理解
Plants can’t communicate by moving or making sounds, as most animals do. Instead, plants produce volatile compounds (揮發(fā)性化合物) —— chemicals that easily change from a liquid to a gas. A flower’s sweet smell, for example, comes from such volatile compounds to attract insects such as bugs and bees.
Plants can also discover volatile compounds produced by other plants. A tree under attack by hungry insets, for instance, may give off these chemicals in order to let other trees know about the attack. In response, the other trees may send off their chemicals to keep the bugs away —— or even chemicals that will attract the bugs’ natural enemies.
Now scientists have created a quick way to understand what plants are saying: a chemical sensor (傳感器) called an “electronic nose”. The “e-nose” can tell such compounds as plants make. When plants are attacked, scientists say, the e-nose could help quickly decide whether plants are being eaten by insects. But today, the only way to spot such insects is to inspect individual plants by observing them. This is a challenging task for managers of greenhouses, including those that can house thousands of plants. The research team is working with an e-nose that can recognize volatile compounds. Inside the device, 13 sensors chemically react with volatile compounds based on the interactions (相互作用), and then the e-nose will give off electronic signals that the scientists can analyze by using computer software.
To test the e-nose, the team presented it with healthy leaves from cucumber, pepper and tomato plants, all being common greenhouse crops. Then scientists collected samples of the air around damaged leaves from each type of crop. These plants had been damaged either by insects or by scientists who made holes in the leaves with a hole punch (打孔器).
The e-nose, it turns out, can 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 (微調(diào)), a device like the e-nose can one day be used in greenhouses to quickly spot harmful bugs, the researchers say. A device like this can also be used to identify fruits that are perfectly ripe and ready to pick and eat, says Natalia Dudareva, a biochemist at Purdue University in West Lafayette, India, who studies smells of flowers and plants. Hopefully, scientists believe, the device can bring large benefits to greenhouse managers in the near future.
1.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 |
2.What did the scientists do to find out if the e-nose worked?
A.They fixed 13 sensors inside the device. |
B.They presented it with all common crops. |
C.They collected different damaged leaves. |
D.They do tests on damaged and healthy leaves. |
3.According to the writer, the most amazing thing about the e-nose is that it can ______.
A.pick out ripe fruits quite expertly |
B.spot the insects in a very quick way |
C.tell different damages to leaves |
D.recognize unhealthy tomato leaves |
4.We can infer from the last paragraph that the e-nose ______.
A.is unable to tell the smell of flowers |
B.is not yet tested in greenhouses |
C.is designed by scientists at Purdue |
D.is helpful in killing harmful insects |
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科目:高中英語 來源:陜西省2010屆高考下學(xué)期第九次模擬考試試卷(英語) 題型:單項(xiàng)填空
– Can you tell me ___________?
– An engineer from Jinan Iron and Steel Plants.
A.what your friend is |
B.who your friend is |
C.what is your friend |
D.who is your friend |
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科目:高中英語 來源:2010-2011學(xué)年江蘇省南京市白下區(qū)高三二模模擬考試英語卷 題型:單項(xiàng)填空
________ there, the southwest desert contains a remarkable variety of plants.
A. Rarely as it rains B. Sometimes it rains
C. It rarely rains D. Although rarely rains
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科目:高中英語 來源:2009年高考試題(北京卷)解析版 題型:閱讀理解
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(不引人注目地)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 outdoors, experiencing bad weather, and making do without modern conveniences. A busy, fully-equipped campsite(野營地)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.
1.You needn’t ask for permission when camping in .
A. national parks in England B. most parts of Scotland
C. crowded lowland Britain D. most parts of England
2.The author thinks that a good campsite is one .
A. with easy access B. used previously
C with modern conveniences D far away from beaches
3.The last paragraph mainly deals with
A. protecting animals B building a campfire
C camping in woodland D finding a campsite with privacy
4.The passage is mainly about
A the protection of campsites B the importance of wild camping
C the human influence on campsites D the dos and don’ts of wild camping
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