All too often, a choice that seems sustainable(可持续的)turns out on closer examination to be problematic. Probably the best example is the rush to produce ethanol(乙醇) for fuel from corn. Corn is a renewable resource —you can harvest it and grow more, almost limitlessly. So replacing gas with corn ethanol seems like a great idea.
One might get a bit more energy out of the ethanol than that used to make it, which could still make ethanol more sustainable than gas generally, but that’s not the end of the problem. Using corn to make ethanol means less corn is left to feed animals and people, which drives up the cost of food. That result leads to turning the fallow land –including, in some cases, rain forest in places such as Brazil—into farmland, which in turn gives off lots of carbon dioxide (CO) into the air. Finally, over many years, the energy benefit from burning ethanol would make up for the forest loss. But by then, climate change would have progressed so far that it might not help.
You cannot really declare any practice “sustainable” until you have done a complete life-cycle analysis of its environmental(环境的) costs. Even then, technology and public keep developing, and that development can lead to unforeseen and undesired results. The admirable goal of living sustainably requires plenty of thought on an ongoing basis.
1.What might directly cause the loss of the forest according to the text?
A. The growing demand for energy to make ethanol
B. The increasing carbon dioxide in the air
C. The greater need for farmland
D. The big change in weather.
2.The underlined word “it” in the second paragraph refers to “ ________”
A. the energy benefit B. the forest loss
C. climate change D. burning ethanol
3.The author thinks that replacing gas with corn ethanol is .
A. impractical B. acceptable C. admirable D. useless
4.What does the author mainly discuss in the text?
A. Technology B. Sustainability
C. Ethanol energy D. Environmental protection
高三英语阅读理解中等难度题
All too often, a choice that seems sustainable(可持续的)turns out on closer examination to be problematic. Probably the best example is the rush to produce ethanol(乙醇) for fuel from corn. Corn is a renewable resource —you can harvest it and grow more, almost limitlessly. So replacing gas with corn ethanol seems like a great idea.
One might get a bit more energy out of the ethanol than that used to make it, which could still make ethanol more sustainable than gas generally, but that’s not the end of the problem. Using corn to make ethanol means less corn is left to feed animals and people, which drives up the cost of food. That result leads to turning the fallow land –including, in some cases, rain forest in places such as Brazil—into farmland, which in turn gives off lots of carbon dioxide (CO) into the air. Finally, over many years, the energy benefit from burning ethanol would make up for the forest loss. But by then, climate change would have progressed so far that it might not help.
You cannot really declare any practice “sustainable” until you have done a complete life-cycle analysis of its environmental(环境的) costs. Even then, technology and public keep developing, and that development can lead to unforeseen and undesired results. The admirable goal of living sustainably requires plenty of thought on an ongoing basis.
1.What might directly cause the loss of the forest according to the text?
A. The growing demand for energy to make ethanol
B. The increasing carbon dioxide in the air
C. The greater need for farmland
D. The big change in weather.
2.The underlined word “it” in the second paragraph refers to “ ________”
A. the energy benefit B. the forest loss
C. climate change D. burning ethanol
3.The author thinks that replacing gas with corn ethanol is .
A. impractical B. acceptable C. admirable D. useless
4.What does the author mainly discuss in the text?
A. Technology B. Sustainability
C. Ethanol energy D. Environmental protection
高三英语阅读理解中等难度题查看答案及解析
All too often , a choice that seems sustainable(可持续的)turns out on closer examination to be problematic. Probably the best example is the rush to produce ethanol(乙醇)for fuel from corn . Corn is a renewable resource —you can harvest it and grow more, almost limitlessly. So replacing gas with corn ethanol seems like a great idea .
One might get a bit more energy out of the ethanol than that used to make it, which could still make ethanol more sustainable than gas generally, but that’s not the end of the problem. Using corn to make ethanol means less corn is left to feed animals and people, which drives up the cost of food. That result leads to turning the fallow land — including, in some cases, rain forest in places such as Brazil — into farmland, which in turn gives off lots of carbon dioxide(CO2)into the air. Finally, over many years, the energy benefit from burning ethanol would make up for the forest loss. But by then, climate change would have progressed so far that it might not help.
You cannot really declare any practice “sustainable” until you have done a complete lift-cycle analysis of its environmental(环境的)costs. Even then, technology and public policy keep developing, and that development can lead to unforeseen and undesired results. The admirable goal of living sustainable requires plenty of thought on an ongoing basis.
1.What might directly cause the loss of the forest according to the text?
A. The growing demand for energy to make ethanol.
B. The increasing carbon dioxide in the air.
C. The greater need for farmland.
D. The big change in weather.
2.The underline word “it” in the second paragraph refers to “________” .
A. the energy benefit B. the forest loss
C. climate change D. burning ethanol
3.The author thinks that replacing gas with corn ethanol is ________ .
A. impractical B. acceptable C. admirable D. useless
4.What does the author mainly discuss in the text?
A. Technology. B. Sustainability.
C. Ethanol energy. D. Environmental protection.
高三英语阅读理解困难题查看答案及解析
All too often, a choice that seems sustainable(可持续的)turns out on closer examination to be problematic. Probably the best example is the rush to produce ethanol(乙醇) for fuel from corn. Corn is a renewable resource —you can harvest it and grow more, almost limitlessly. So replacing gas with corn ethanol seems like a great idea.
One might get a bit more energy out of the ethanol than that used to make it, which could still make ethanol more sustainable than gas generally, but that’s not the end of the problem. Using corn to make ethanol means less corn is left to feed animals and people, which drives up the cost of food. That result leads to turning the fallow land –including, in some cases, rain forest in places such as Brazil—into farmland, which in turn gives off lots of carbon dioxide (CO) into the air. Finally, over many years, the energy benefit from burning ethanol would make up for the forest loss. But by then, climate change would have progressed so far thatitmight not help.
You cannot really declare any practice “sustainable” until you have done a complete life-cycle analysis of its environmental(环境的) costs. Even then, technology and public keep developing, and that development can lead to unforeseen and undesired results. The admirable goal of living sustainably requires plenty of thought on an ongoing basis.
1.What might directly cause the loss of the forest according to the text?
A. The growing demand for energy to make ethanol
B. The increasing carbon dioxide in the air
C. The greater need for farmland
D. The big change in weather.
2.The underlined word “it” in the second paragraph refers to “ ”
A. the energy benefit B. the forest loss
C. climate change D. burning ethanol
3.The author thinks that replacing gas with corn ethanol is .
A. impractical B. acceptable C. admirable D. useless
4.What does the author mainly discuss in the text?
A. Technology B. Sustainability
C. Ethanol energy D. Environmental protection
高三英语阅读理解中等难度题查看答案及解析
These days, it seems that almost all of us are too serious.My older daughter often says to me, “Daddy, you’ve got that serious look again.” Even those of us who are committed to non-seriousness are probably too serious.People are frustrated and anxious about almost everything -- being five minutes late, witnessing someone look at us wrong or say the wrong thing, paying bills, waiting in line, overcooking a meal, making an honest mistake -- you name it, and we all lose perspective(理性判断) over it.
The root of being anxious is our unwillingness to accept life as being different, in any way, from our expectation.Very simply, we want things to be a certain way but they’re not a certain way.Life is simply as it is.Perhaps Benjamin Franklin said it best: “Our limited perspective, our hopes and fears become our measure of life, and when circumstances don’t fit our ideas, they become our difficulties.” We spend our lives wanting things, people, and events to be just as we want them to be -- and when they’re not, we fight and we suffer.
The first step in recovering from over-seriousness is to admit that you have a problem.You have to want to change, to become more easygoing.You have to see that your own anxiety is largely of your own creation -- it’s made up of the way you have set up your life and the way you react to it.
The next step is to understand the link between your expectations and your frustration level.Whenever you expect something to be a certain way and it isn’t, you’re upset and you suffer.On the other hand, when you let go of your expectations, when you accept life as it is, you’re free.
A good exercise is to try to approach a single day without expectation.Don’t expect people to be friendly.When they’re not, you won’t be surprised or bothered; if they are, you’ll be delighted.Don’t expect your day to be problem-free.Instead, as problems come up, say to yourself, “Ah, another barrier to overcome.” As you approach your day in this manner you’ll notice how elegant life can be.Rather than fighting against life, you’ll be dancing with it.Pretty soon, with practice, you’ll lighten up your entire life.And when you lighten up, life is a lot more fun.
1.Why are people easily frustrated and anxious these days?
A.Because their children are disappointing.
B.Because they have to look serious in public.
C.Because life is becoming a greater burden.
D.Because people have lost sensible judgment.
2.According to Benjamin Franklin, what was the cause of over-seriousness?
A.The fact that people’s perspective, hopes and fears are limited.
B.The fact that people can’t change life itself.
C.The fact that things fail to meet people’s expectations.
D.The fact that circumstances turn out to be difficult.
3.In what pattern is this article developed?
A.Phenomenon, causes and solutions.
B.Problems, explanation and conclusion.
C.Examples, causes and arguments.
D.Phenomenon, analysis and conclusion.
4.What might be the best title for the passage?
A.People seem to be too serious
B.Life is simply as it is
C.Hopes can turn into difficulties
D.A good exercise removes over-seriousness
高三英语阅读理解中等难度题查看答案及解析
These days, it seems that almost all of us are too serious.My older daughter often says to me, “Daddy, you’ve got that serious look again.” Even those of us who are committed to non-seriousness are probably too serious.People are frustrated and anxious about almost everything -- being five minutes late, witnessing someone look at us wrong or say the wrong thing, paying bills, waiting in line, overcooking a meal, making an honest mistake -- you name it, and we all lose perspective(理性判断) over it.
The root of being anxious is our unwillingness to accept life as being different, in any way, from our expectation.Very simply, we want things to be a certain way but they’re not a certain way.Life is simply as it is.Perhaps Benjamin Franklin said it best: “Our limited perspective, our hopes and fears become our measure of life, and when circumstances don’t fit our ideas, they become our difficulties.” We spend our lives wanting things, people, and events to be just as we want them to be -- and when they’re not, we fight and we suffer.
The first step in recovering from over-seriousness is to admit that you have a problem.You have to want to change, to become more easygoing.You have to see that your own anxiety is largely of your own creation -- it’s made up of the way you have set up your life and the way you react to it.
The next step is to understand the link between your expectations and your frustration level.Whenever you expect something to be a certain way and it isn’t, you’re upset and you suffer.On the other hand, when you let go of your expectations, when you accept life as it is, you’re free.
A good exercise is to try to approach a single day without expectation.Don’t expect people to be friendly.When they’re not, you won’t be surprised or bothered; if they are, you’ll be delighted.Don’t expect your day to be problem-free.Instead, as problems come up, say to yourself, “Ah, another barrier to overcome.” As you approach your day in this manner you’ll notice how elegant life can be.Rather than fighting against life, you’ll be dancing with it.Pretty soon, with practice, you’ll lighten up your entire life.And when you lighten up, life is a lot more fun.
1.Why are people easily frustrated and anxious these days?
A.Because their children are disappointing.
B.Because they have to look serious in public.
C.Because life is becoming a greater burden.
D.Because people have lost sensible judgment.
2.According to Benjamin Franklin, what was the cause of over-seriousness?
A.The fact that people’s perspective, hopes and fears are limited.
B.The fact that people can’t change life itself.
C.The fact that things fail to meet people’s expectations.
D.The fact that circumstances turn out to be difficult.
3.In what pattern is this article developed?
A.Phenomenon, causes and solutions.
B.Problems, explanation and conclusion.
C.Examples, causes and arguments.
D.Phenomenon, analysis and conclusion.
4.What might be the best title for the passage?
A.People seem to be too serious
B.Life is simply as it is
C.Hopes can turn into difficulties
D.A good exercise removes over-seriousness
高三英语阅读理解中等难度题查看答案及解析
With all the money _______, Mr. Smith had no choice but _______ for the government aid.
A. running out; to apply B. run out; apply
C. to run out; applied D. being run out; to apply
高三英语单项填空中等难度题查看答案及解析
Today we have too many choices of communication through advanced technology,but we seem ___________the joy of communicating face to face.
A.losing B.to be losing C.to be lost D.hating lost
高三英语单项填空中等难度题查看答案及解析
It’s been said that life turns on small things. Sometimes it’s hard to see how small choices can change your life. But when put together over time, the little things can make the biggest difference.
The theme of Success for Teens is “Little Things Matter”. The book helps teens identify small,positive choices they can make in their lives to help them reach their goals. Lots of teens don’t realize how the little choices in their lives can have lasting effects. Often they focus on the bigger events, such as a major exam, a big game or competition, or choosing a college. The little things, however, can go unnoticed unless your teen understands how important they can be.
The little things that lead to success are mostly easy to do. Help your teen identify a few areas in everyday life where he or she can make small, positive choices. It might be as simple as getting up on time, prioritizing(按重要性排列) their schoolwork, putting in an extra 10 minutes of practice or using some spare time to help someone else.
Nineteen-year-old Kyle Freas used to be on his school baseball team and would play every day after school. When the season was over, he had an empty three hours a day, so he started spending one third of such extra time daily looking for ways to help other kids. Over the past few years, his project has raised thousands of dollars to help abused, homeless and sick children. Kyle spent just a little time each day doing something that ended up benefiting a lot of kids. The important thing to understand is that Kyle made the small and positive decisions necessary for success. Make sure your child understands that even though the results of the positive choices may not be seen right away, they are building on each other and taking him or her on a path that will lead to success.
1.What does the underlined part “turns on” in the first paragraph mean?
A.takes away B.depends on
C.sets aside D.puts out
2.We can learn from Paragraph 2 that .
A.dealing with big events is the most important in one’s life
B.little choices seldom have lasting effects on one’s life
C.teens should try to focus their attention on big choices
D.many teens fail to realize the importance of little choices
3.Which of the following words can be used to describe Kyle Freas?
A.Kind-hearted. B.Creative.
C.Naughty. D.Self-confident.
4.The writer mainly discussed the relationship between .
A.little choices and big choices B.teens’ goals and their actions
C.positive and negative decisions D.small positive choices and success
5.The text is most probably written for .
A.teenagers B.parents
C.pupils D.teachers
高三英语阅读理解中等难度题查看答案及解析
The little boy was so careless with his spelling that he often ________ letters from words.
A.left out B.left behind
C.left off D.let alone
高三英语单项填空中等难度题查看答案及解析
根据短文内容,从短文后的选项中选出能填人空白处的最佳选项。选项中有两项为多余选项。
Can't sleep? You turn all night never seeming to get comfortable, never seeming to feel like you are even close to sleep? I bet you've tried a few different solutions too, warm milk or maybe even sleeping pills. The reason why you can't sleep could be because of many different things. 1. However, if you want simple solutions to sleep better then the following steps can help you get that great night's sleep:
1. Sleep on your side.
Sleeping on your side is an acquired taste if all you have been doing is stomach sleeping. The side position is best for your neck and for improving breathing which is a common cause for frequently waking. 2.
2. Find the right pillow.
Finding the right pillow is vitally important. 3. In the side sleeping position the pillow should fill the entire space between your neck and the mattress(床垫).Your head should not be tipped up or down but be in line with your spine(脊椎).
3. No digital entertainment before bed.
Avoid any forms of digital entertainment at least one hour prior to bed. Digital entertainment means movies, TV, Xbox, computer/laptop use, even a kindle. 4. Trying reading a few pages of non-fiction instead.
4. 5.
When you eat and got to bed shortly after what happens is that your stomach is still full of food. This prevents you from breathing properly and can lead to a very disturbed sleep.
A. Having a sound sleep is my dream.
B. Wait three hours after eating.
C. There are five steps to have better sleep.
D. Stay away from all forms.
E. Always get a check from a health care provider if you have specific concerns.
F. The best pillows are formed to support the neck.
G. Try placing a pillow between your knees in order to prevent rolling onto your stomach.
高三英语七选五困难题查看答案及解析