When coal is burned in a boiler, two kinds of ash by-products are produced: a heavy bottom ash and a fine-as-powder fly ash. About 10 to 15 percent of the coal by-product is bottom ash which is used like sand on streets and highways covered with ice, and also on highways as paving material.
It is the fly ash, however, that is receiving much attention. Once considered a waste, fly ash is now regarded as a natural resource in the United States. It can be placed in some lower places, where it is compacted and covered with soil, for the seeds of various grasses and plants to be placed in the soil to make the land productive.
Fly ash may be added to concrete to build roads and other kinds of buildings, taking the place of the cement up to 20 percent. As a by-product of burned coal, fly ash requires no extra energy to be produced, while cement production requires great amounts of energy.
Besides, the technology is able to take out some useful minerals from the fly ash, which is still a very expensive process today. But the time may come when it is cheaper to take out these products from ash than to mine new supplies.
1. The bottom ash can be put on icy streets________.
| A．in order to rebuild them | B． in order to make them colourful |
| C．so that people can walk on them | D．so that cars can run faster |
2.The fly ash_______ bottom ash.
| A．has the same use as | B． is more expensive than |
| C．has more uses than | D．is much cheaper than |
3.The fly ash can be used to________.
| A．grow various plants | B． take the place of soil |
| C．cover productive land | D．make more productive land |
4. Which of the following is right?
| A．To produce fly ash, some extra coal is to be burned. |
| B． Fly ash is made while producing cement. |
| C．It takes less energy to produce fly ash than cement. |
| D．Fly ash is a costless by-product. |
5.The word “mine” in the last sentence of the passage means_______.
| A．to buy things from other countries |
| B． to search for useful materials in the mountains |
| C．to dig deeply into the ground to get useful materials |
| D．to take out certain materials from other things |
高一英语阅读理解简单题
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When coal is burned in a boiler, two kinds of ash by-products are produced: a heavy bottom ash and a fine-as-powder fly ash. About 10 to 15 percent of the coal by-product is bottom ash which is used like sand on streets and highways covered with ice, and also on highways as paving material.
It is the fly ash, however, that is receiving much attention. Once considered a waste, fly ash is now regarded as a natural resource in the United States. It can be placed in some lower places, where it is compacted（压实） and covered with soil, for the seeds of various grasses and plants to be placed in the soil to make the land productive.
Fly ash may be added to concrete (混凝土）to build roads and other kinds of buildings, taking the place of the cement(水泥) up to 20 percent. As a by-product of burned coal, fly ash requires no extra energy to be produced, while cement production requires great amounts of energy.
Besides, the technology is able to take out some useful minerals from the fly ash, which is still a very expensive process today. But the time may come when it is cheaper to take out these products from ash than to mine new supplies.
49. The bottom ash can be put on icy streets________.
A. in order to rebuild them B. in order to make them colorful
C. so that people can walk on them D. so that cars can run faster
50. The fly ash can be used to________.
A. grow various plants B. take the place of soil
C. cover productive land D. make more productive land
51. Which of the following is right?
A. To produce fly ash, some extra coal is to be burned.
B. Fly ash is made while producing cement.
C. It takes less energy to produce fly ash than cement.
D. Fly ash is a costless by-product.
52. The word “mine” in the last sentence of the passage means_______.
A. to buy things from other countries
B. to search for useful materials in the mountains
C. to dig deeply into the ground to get useful materials
D. to take out certain materials from other things
高一英语阅读理解简单题查看答案及解析
When coal is burned in a boiler, two kinds of ash by-products are produced: a heavy bottom ash and a fine-as-powder fly ash. About 10 to 15 percent of the coal by-product is bottom ash which is used like sand on streets and highways covered with ice, and also on highways as paving material.
It is the fly ash, however, that is receiving much attention. Once considered a waste, fly ash is now regarded as a natural resource in the United States. It can be placed in some lower places, where it is compacted and covered with soil, for the seeds of various grasses and plants to be placed in the soil to make the land productive.
Fly ash may be added to concrete to build roads and other kinds of buildings, taking the place of the cement up to 20 percent. As a by-product of burned coal, fly ash requires no extra energy to be produced, while cement production requires great amounts of energy.
Besides, the technology is able to take out some useful minerals from the fly ash, which is still a very expensive process today. But the time may come when it is cheaper to take out these products from ash than to mine new supplies.
1. The bottom ash can be put on icy streets________.
| A．in order to rebuild them | B． in order to make them colourful |
| C．so that people can walk on them | D．so that cars can run faster |
2.The fly ash_______ bottom ash.
| A．has the same use as | B． is more expensive than |
| C．has more uses than | D．is much cheaper than |
3.The fly ash can be used to________.
| A．grow various plants | B． take the place of soil |
| C．cover productive land | D．make more productive land |
4. Which of the following is right?
| A．To produce fly ash, some extra coal is to be burned. |
| B． Fly ash is made while producing cement. |
| C．It takes less energy to produce fly ash than cement. |
| D．Fly ash is a costless by-product. |
5.The word “mine” in the last sentence of the passage means_______.
| A．to buy things from other countries |
| B． to search for useful materials in the mountains |
| C．to dig deeply into the ground to get useful materials |
| D．to take out certain materials from other things |
高一英语阅读理解简单题查看答案及解析
It is widely known that burning coal for electricity is one of the main causes for global warming , but we can’t ignore the cars’ _____ to the greenhouse effect.
A. devotion B. contribution
C. attraction D. reflection
高一英语单项填空简单题查看答案及解析
Coal burning deep underground in China，India and Indonesia is threatening the environment and human life, scientists have warned. These large-scale underground fires cause the ground temperature to heat up and kill surrounding vegetation, produce greenhouse gases and can even bring about forest fires, a panel（专门小组）of scientists told the annual meeting of the American Association for the Advancement of Science in Denver. They warned the resulting release of poisonous elements like arsenic （砷）and mercury（汞）can also pollute local water sources and soils “Coal fires are a global disaster,” said Associate Professor Glenn Stracher of East Georgia College in Swainsboro, U.S.A. But surprisingly few people know about them.
Coal can heat up on its own, and eventually catch fire and burn, if there is a continuous oxygen supply. The heat produced is not caused to disappear and under the right combinations of sunlight and oxygen, can trigger spontaneous（自然产生的）catching fire and burning. This can occur underground in coal stockpiles（煤堆）, abandoned mines or even as coal is transported. Such fires in China destroy up to 200 million tons of coal per year, delegates were told. In comparison, the U. S. economy consumes about one billion tons of coal annually, said Stracher, whose analysis of the likely effect of coal fires has been accepted for publication in the International journal of Coal Ecology. Once underway, coal fires can burn for decades, even centuries. In the process, they release large volumes of greenhouse gases, poisonous fumes and black particles into the atmosphere.
The members of the panel discussed the effect these fires may be having on global and regional climate change, and agreed that the underground nature of the fires makes them difficult to detect(发现). One of the members of the panel, Assistant Professor Paul Van Dijk of the International Institute for Geo-Information Science and Earth Observation in the Netherlands, has been working with the Chinese government to detect and monitor fires in the northern regions of the country.
The remote sensing and other techniques will allow scientists to estimate how much carbon dioxide these fires are emitting. One suggested method of controlling the fires was presented by Gary Colaizzi, of the engineering firm Goodson, which has developed a beat-resistant grout designed to be pumped into the coal fire to cut off the oxygen supply.
1.According to Paragraph 2, what will happen when the underground heat does not disappear? ________.
A.Coal heats up on its own and catches fire and burns.
B.The underground oxygen will be used up.
C.Poisonous fumes and greenhouse gases will be accumulated underground.
D.There will be an increase of abandoned mines.
2.What did Stracher analyze in his article published in the International Journal of Coal Ecology? ________.
A.Annual consumption of coal in US.
B.Annual consumption of coal in China.
C.How long coal fires have lasted in the northern region of China.
D.Coal fires may have an effect on the environment.
3.Which of the following statements about Paul Van Dijk is NOT true? ________.
A.He was one of the scientists who have warned against the threats of underground fires.
B.He has detected and monitored underground fires in the Netherlands.
C.He has worked with the Chinese government on the underground fires issue.
D.He works for a research institute in the Netherlands.
4.What is the suggested method to control underground fires in the passage? ________.
A.Using remote sensing technique.
B.Controlling the release of carbon dioxide.
C.Cutting off the oxygen supply.
D.Making the soil heat resistant.
高一英语阅读理解中等难度题查看答案及解析
In today’s world, it is nice to know a simple act of kindness doesn’t go unnoticed. When 15-year-old Dontarius Caldwell was taken in a ________ showing him helping a blind woman cross the street, he wasn’t doing it for clicks (点击量) or ________
“I was just trying to ________. I really didn’t think I would be on camera,” he said. A photo of the Aiken High School freshman became ________ on Tuesday, showing the young teen helping the woman at Hamilton Avenue in College Hill.
“I was just helping the elderly, ________ a helping hand. Everybody needs a helping hand,” he said. Like any other day, Dontarius was on his ________ and playing games while waiting for his school bus with his younger sister Diamond.
“Diamond was ________ music on the smart phone, too, then she looked over ________ and I looked over to see what she was ________.” Dontarius recalled. Diamond saw a woman
________ to press the button for the crosswalk sign, so she ________ her brother to do something. “I told Dontarius that I think she loses her ________, he should get up and go help her ________ the street while I waited for the ________ to come,” said Diamond.
“I asked, ‘Madam do you ________ some help?’ And she answered, ‘Yes.’ She gave me her hand and I ________ it,” Dontarius said. Dontarius said he didn’t do anything ________ He was just ________ to do the right thing in the family. “If you are ________, what happens to them happens to you.” Dontarius was given a key to the school as a ________ for his kindness.
1.A.photo B.notice C.post D.magazine
2.A.money B.feelings C.likes D.translation
3.A.remember B.help C.talk D.challenge
4.A.interesting B.outstanding C.comfortable D.popular
5.A.borrowing B.fixing C.washing D.giving
6.A.phone B.book C.computer D.bike
7.A.changing B.editing C.enjoying D.directing
8.A.naturally B.suddenly C.ridiculously D.particularly
9.A.hearing B.seeing C.doing D.considering
10.A.struggling B.touching C.jumping D.shouting
11.A.taught B.ordered C.begged D.urged
12.A.control B.direction C.sight D.job
13.A.cross B.return C.find D.leave
14.A.stranger B.bus C.teacher D.police
15.A.lack B.offer C.refuse D.need
16.A.held B.observed C.appreciated D.beat
17.A.common B.special C.suitable D.expensive
18.A.adopted B.praised C.trained D.raised
19.A.clever B.sensitive C.kind D.smart
20.A.punishment B.lesson C.reward D.position
高一英语完形填空中等难度题查看答案及解析
When argument ________ in a relationship between two people, a usual way of dealing with this is to send messages through a third person.
| A．lifts | B．arises | C．rises | D．raises |
高一英语单项填空中等难度题查看答案及解析
This area is rich in coal，so habitants here use tons of coal to _____ electricity.
A．offer B．create C．bring D．generate
高一英语单项填空中等难度题查看答案及解析
I like growing kinds of plants. Once, I ______ two seeds (种子) side by side in the soil in my backyard. The first says, “I want to ______! I want to send my roots deep into the soil, and ______ to come up. I want to feel the ______ of the sun on my face!” and it grew. The second seed says, “I am ______. If I send my roots into the ______ below, I don’t know what I will meet in the dark. If I ______ my way through the hard soil, I may damage my small sprouts (芽). What if a small child may ______ me up from the ground? No, it is much better for me to ______ until safe. ” A hen walking around for ______ found the waiting seed and ______ ate it.
I sometimes ______ myself — what if I stop focusing on the ______ and go for the best? Most people can do unusual things ______ they have the confidence to take the risk. ______, most people don’t. There are lots of people sitting on the ______ saying: I’m going ... They will do it when they are rich and when they get married.
The ______ is that your life can never be perfect. Step away from the sofa sitters who are waiting for a single perfect day to begin ______ their dreams.
Believe in yourself and know you can do ______! However, those who refuse to take the ______ get controlled by life finally.
1.A.planted B.bought C.found D.carried
2.A.improve B.hide C.grow D.leave
3.A.dare B.try C.agree D.refuse
4.A.warmth B.kindness C.energy D.position
5.A.disappointed B.interested C.excited D.scared
6.A.farm B.ground C.rock D.sand
7.A.lose B.push C.find D.change
8.A.pull B.put C.make D.lift
9.A.wait B.check C.move D.develop
10.A.fun B.company C.food D.exercise
11.A.long ago B.later on C.at first D.right away
12.A.remind B.call C.ask D.punish
13.A.worst B.best C.hardest D.safest
14.A.until B.if C.since D.though
15.A.Again B.So C.However D.Besides
16.A.sofa B.floor C.bed D.roof
17.A.news B.question C.truth D.message
18.A.collecting B.realizing C.breaking D.sharing
19.A.anything B.nothing C.neither D.both
20.A.advantage B.risk C.time D.order
高一英语完形填空中等难度题查看答案及解析
The boss _______ company I worked in two years ago has ______ in solving such kind of problem.
A. whose; many experiences B. who; many experiences
C. whose; much experience D. which; much experience
高一英语单项填空中等难度题查看答案及解析
The boss _________ company I worked in two years ago has _______ in solving such kind of problem.
A. whose; many experiences B. who; many experiences
C. whose; much experience D. who; much experience
高一英语单项填空中等难度题查看答案及解析