FAST, the largest ‘ear’ on Earth, can listen for distant signals in the universe, using technology five times more powerful than ______ was previously available.
A.how B.which C.that D.what
高三英语单项填空中等难度题
FAST, the largest ‘ear’ on Earth, can listen for distant signals in the universe, using technology five times more powerful than ______ was previously available.
A.how B.which C.that D.what
高三英语单项填空中等难度题查看答案及解析
Earth Day is one of the world's largest environmental movements. Held every year on April 22, Earth Day turns 50 this year. It was created by US politician Gaylord Nelson, aiming to give a voice to people who wanted environmental protection. 1. Back then, it helped to bring clean air and water laws to the US. Now a global movement, it's facing even bigger environmental threats.
2. One of these is The Ocean Cleanup based in the Netherlands. It has successfully made a device that can gather and collect waste from our oceans and rivers, a majority of which is plastic. For us, plastic is an item we use and then throw away. But if you throw away a plastic bottle today, it is non-biodegradable (不可生物降解的).It will still be around for hundreds of years. Much of this plastic waste ends up in the sea, where it kills more than 100 million sea creatures every year. 3.
It is not just our oceans that are under threat. Over time, deforestation (滥伐森林)，improper farming, and livestock grazing (放牧)can stop green areas from growing. 4. A Chinese non-governmental organizations (NGO) — The China Green Foundation — is working to change this by planting millions of trees. Another NGO that is making big changes is Welfare Togo. Togo is a developing country in Africa. It faces many environmental problems, including air and water pollution and desertification. To help, Welfare Togo opened 31 schools across the country that focus on teaching sustainable development. Its aim is using education to bring positive environmental changes to Togo.
5. However, through small everyday changes, such as recycling correctly, we can also bring about considerable changes to our natural world.
A.This is called desertification.
B.It aims to support environmental protection around the world.
C.His idea was so successful that more than 20 million people joined in Earth Day events.
D.However, because of high demand, we still make more than 300 tons of new plastic every year.
E.It challenges people to promote environmental education.
F.Not all of us can make such large contributions.
G.Fortunately, many NGOs are stepping up to promote positive changes.
高三英语七选五中等难度题查看答案及解析
The largest land animal remaining on the earth, the African elephant is of much importance to African ecosystem. Unlike other animals, the African elephant is to a great extent the builder of its environment. As a giant plant-eater, it significantly shapes the forest-and-savanna (大草原) surroundings in which it lives, therefore deciding the conditions of existence for millions of other animals that live in its habitat.
It is the elephant’s great desire for food that makes it both a disturber of the environment and an important builder of its habitat. In its continuous search for the 300 pounds of plants it must have every day, it kills small trees and underbushes, as well as pulls branches off big trees. This results in numerous open spaces in not only deep tropical forests but also the woodlands that cover part of the African savannas. In these open spaces are numerous plants in various stages of growth, which attract a variety of other plant-eaters.
Take the rain forests for example. In their natural state, the spreading branches overhead shut out sunlight and prevent the growth of plants on the forest floor. By pulling down trees and eating plants, elephants create open spaces, allowing new plants to grow on the forest floor. In such situations, the forests become suitable for large-hoofed plant-eaters to move around and for small-sized plant-eaters to obtain their food as well.
Scientists are worried now that the African elephant has become an endangered species. If the elephant dies out, scientists say, many other animals will also disappear from vast areas of forest and savanna, greatly changing and worsening the whole ecosystem.
1.What is the passage mainly about?
A. Disappearance of African elephants.
B. Forests and savannas as habitats for African elephants.
C. The effect of African elephants' search for food.
D. The eating habit of African elephants.
2.The African elephant influences the ecosystem in the following ways except that .
A. it creates open areas in deep tropical forests as well as woodlands
B. it pulls off the branches and leaves, shutting out the sunshine
C. its eating habit can be made use of by large-hoofed and small-sized animals
D. it encourages some kinds of plants growing in an indirect way
3.According to the passage, which of the following statements is true?
A. Numerous grown plants are the favorites of plant-eaters.
B. The extinction of the African elephant has nothing to do with the ecosystem.
C. Quantities of plants are consumed by African elephants, including branches and underbushes.
D. The forest floor in rain forests is scarcely dotted with new shoots.
4.The passage is developed mainly by .
A. presenting the changes in time order
B. making comparisons and giving examples
C. classifying similarities and differences
D. showing the effect and then explaining the reasons
高三英语阅读理解中等难度题查看答案及解析
The African elephant, the largest land animal remaining on earth, is of great importance to African ecosystem(生态系统). Unlike other animals, the African elephant is to a great extent the builder of its environment. As a big plant-eater, it largely shapes the forest- and-savanna(大草原) surroundings in which it lives, therefore setting the terms of existence for millions of other animals that live in its habitat.
It is the elephant’s great desire for food that makes it a disturber of the environment and an important builder of its habitat. In its continuous search for the 300 pounds of plants it must have every day, it kills small trees and underbushes, and pulls branches off big trees. This results in numerous open spaces in both deep tropical forests and in the woodlands that cover part of the African savannas . In these open spaces are numerous plants in various stages of growth that attract a variety of other plant-eaters.
Take the rain forests for example. In their natural state, the spreading branches overhead shut out sunlight and prevent the growth of plants on the forest floor. By pulling down trees and eating plants, elephants make open spaces, allowing new plants to grow on the forest floor. In such situations, the forests become suitable for large hoofed plant-eaters to move around and for small plant-eaters to get their food as well.
What worries scientists now is that the African elephant has become an endangered species. If the elephant disappears, scientists say, many other animals will also disappear from vast areas of forest and savanna, greatly changing and worsening the whole ecosystem.
1. What is the passage mainly about?
A. Disappearance of African elephants.
B. Forests and savannas as habitats for African elephants.
C. The effect of African elephants' search for food.
D. The eating habit of African elephants.
2. What does the underlined phrase “setting the terms” most probably mean?
A. Fixing the time.
B. Worsening the state.
C. Improving the quality.
D. Deciding the conditions.
3. What do we know about the open spaces in the passage?
A. They result from the destruction of rain forests.
B. They provide food mainly for African elephants.
C. They are home to many endangered animals.
D. They are attractive to plant-eating animals of different kinds.
4. According to the passage, which of the following statements is true?
A. The African elephant is the largest animal on earth.
B. African elephants have 300 pounds of plants every day.
C. The African elephant is in a way the builder of the environment like all the other land animals.
D. If the African elephant disappears, the whole ecosystem won’t be affected.
5. The passage is developed mainly by ________.
A. showing the effect and then explaining the causes
B. pointing out similarities and differences
C. describing the changes in space order
D. giving examples
高三英语阅读理解中等难度题查看答案及解析
The African elephant,the largest land animal remaining on earth,is of great importance to African ecosystem(生态系统).Unlike other animals,the African elephant is to a great extent the builder of its environment.As a big plant-eater,it largely shapes the forest-and-savanna(大草原) surroundings in which it lives,therefore setting the terms of existence for millions of other animals that live in its habitat(栖息地).
It is the elephant’s great desire for food that makes it a disturber of the environment and an important builder of its habitat.In its continuous search for the 300 pounds of plants it must have every day,it kills small trees and underbushes,and pulls branches off big trees.This results in numerous open spaces in both deep tropical forests and in the woodlands that cover part of the African savannas.In these open spaces are numerous plants in various stages of growth that attract a variety of other plant-eaters.
Take the rain forests for example.In their natural state,the spreading branches overhead shut out sunlight and prevent the growth of plants on the forest floor.By pulling down trees and eating plants,elephants make open spaces,allowing new plants to grow on the forest floor.In such situations,the forests become suitable for large hoofed plant-eaters to move around and for small plant-eaters to get their food as well.
What worries scientists now is that the African elephant has become an endangered species.If the elephant disappears,scientists say,many other animals will also disappear from vast areas of forest and savanna,greatly changing and worsening the whole ecosystem.
1.What is the passage mainly about?
A.Disappearance of African elephants.
B.Forests and savannas as habitats for African elephants.
C.The effect of African elephants’ search for food.
D.The eating habit of African elephants.
2.What does the underlined phrase “setting the terms” most probably mean?
A.Fixing the time.
B.Worsening the state.
C.Improving the quality.
D.Deciding the conditions.
3.What do we know about the open spaces in the passage?
A.They result from the destruction of rain forests.
B.They provide food mainly for African elephants.
C.They are home to many endangered animals.
D.They are attractive to plant-eating animals of different kinds.
4.The passage is developed mainly by ______.
A.showing the effect and then explaining the causes
B.pointing out similarities and differences
C.describing the changes in spare order
D.giving examples
高三英语阅读理解中等难度题查看答案及解析
China may be the world’s largest market for e-bikes, but Europe is fast catching up. The EU’s official statistics agency says the figure reached the one million e-bike mark two years ago, and sales have sharply increased since then.
When working errands (差事) around Berlin, Lutz, who usually works with horses, uses the company’s new e-bike that charges easily and has a range of 140 kilometers. “We found there was no parking spot problem or other worries. And on top of all this, we don’t pollute the environment. Petrol is also saved,” said Lutz Baddack, owner of Reitsport Baddack.
Unlike many other parts of the world, the EU does not require registration (登记) for e-bikes. Nearly half a million are expected to be sold in Germany this year, in all shapes and sizes.
It’s not just bike fans buying them. People who usually drive cars also use them occasionally,” said Stefan Gelbhaar.
Dealers say the elderly are also big customers. Sales of ordinary bicycles fell in Germany last year, but sales of e-bikes rose by eight percent. Sales figures are expected to keep rising. “In five years we will have the market share of 20 percent, maybe more,” said Marcus Kendler, owner of E-Motion. In the hillier parts, that figure has already been beyond it.
The sales of e-bikes in Germany have been much larger than those in any other country in Europe. But other countries are fast catching up. In Europe, with the various brands at the market and falling prices, e-bikes are here to stay and not just a repeated trend.
1.In Germany the sales of e-bikes _________.
A. have been the biggest in Europe
B. have been larger than in China
C. reached one million two years ago
D. have taken up 20% of the market
2.Which of the following is NOT the benefit of using e-bikes?
A. The users needn’t worry about parking spots.
B. It’s environmentally friendly and saves petrol.
C. The users are not required to register worldwide.
D. It charges easily and runs far without charging.
3.From the passage we know that e-bikes are preferred by those _________.
A. who work with horses
B. who usually drive cars
C. who are out on business
D. who live in the hillier parts
4.It can be inferred from the passage that _________.
A. the popularity of e-bikes in Europe will be lasting
B. in Europe there are various brands of e-bikes on sale
C. e-bikes will replace ordinary bicycles in only five years
D. Europe will become the world’s largest market of e-bikes
高三英语阅读理解中等难度题查看答案及解析
In the distant past, friends relied on each other for their survival. They hunted together and defended each other against _1.___________(danger) animals and enemies. In those days, if you didn’t have a friend ,you would either starve, be eaten__2.__________ killed. Nowadays, friendship isn’t __3.___________(exact)a matter of life and death .However. friendship is still of great importance and not having a friend is something to be _4.___________(concern ) about. Most people look upon a friend as someone they can depend when they are going _5._____________ times of trouble .In such times, friends provide them with emotional support and sometimes financial help. It is in these troubled times __6.__________they find out who their true friends are. As an old saying 7._________________(go),in times of prosperity, friends will be plenty: in times of _8.______________(suffer), not one in twenty. And there is another saying9. ____________ says you can hardly make a friend in a year, but you can easily upside one in an hour. So do your best to get along with and be grateful to all those ___10.____________ are willing to side with you even when you are in the wrong as they are true friends and they are not easily come by.
高三英语语法填空中等难度题查看答案及解析
阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
In the distant past, friends relied on each other for their survival. They hunted together and defended each other against _1.___________(danger) animals and enemies. In those days, if you didn’t have a friend ,you would either starve, be eaten__2.__________ killed. Nowadays, friendship isn’t __3.___________(exact)a matter of life and death .However. friendship is still of great importance and not having a friend is something to be _4.___________(concern ) about. Most people look upon a friend as someone they can depend when they are going _5._____________ times of trouble .In such times, friends provide them with emotional support and sometimes financial help. It is in these troubled times __6.__________they find out who their true friends are. As an old saying 7._________________(go),in times of prosperity, friends will be plenty: in times of _8.______________(suffer), not one in twenty. And there is another saying9. ____________ says you can hardly make a friend in a year, but you can easily upside one in an hour. So do your best to get along with and be grateful to all those ___10.____________ are willing to side with you even when you are in the wrong as they are true friends and they are not easily come by.
高三英语语法填空中等难度题查看答案及解析
Earth is believed ______ by an object the size of Mars at some point in the distant past
before its surface cooled．
A．to be hit B．to have hit C．to have been hit D．to hit
高三英语单项填空中等难度题查看答案及解析
50. The Englishman has a very good ear _____ music. You can ask him for some advice.
| A．at | B．of | C．for | D．In |
高三英语单项填空简单题查看答案及解析