All too often, a choice that seems sustainable(可持續(xù)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(環(huán)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.
小題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.
小題2:The underlined word “it” in the second paragraph refers to “           ” 
A．the energy benefitB．the forest loss
C．climate changeD．burning ethanol
小題3:The author thinks that replacing gas with corn ethanol is           . 
A．impracticalB．a(chǎn)cceptableC．a(chǎn)dmirableD．useless
小題4:What does the author mainly discuss in the text? 
A．TechnologyB．Sustainability
C．Ethanol energyD．Environmental protection

小題1:C
小題2:A
小題3:A
小題4:B

試題分析：作者主要談?wù)摰氖强沙掷m(xù)性發(fā)展的判斷依據(jù)以及用相關(guān)一些事實(shí)來進(jìn)行佐證其論點(diǎn)。
小題1:C推理判斷題。注意問的是直接原因。That result leads to turning the fallow land — including, in some
cases, rain forest in places such as Brazil — into farmland(這個(gè)結(jié)果會(huì)導(dǎo)致一些休閑地<在一些情況下，包括位于巴西等地的熱帶雨林>被轉(zhuǎn)化為農(nóng)場(chǎng))。
小題2:A詞義猜測(cè)題。根據(jù)上下文可知是指能源優(yōu)勢(shì)。
小題3:A推理判斷題。根據(jù)全文可知作者認(rèn)為用corn代替gas是不符合實(shí)際的，會(huì)帶來很多意想不到的問題。
小題4:B主旨大意題。讀完全文我們可以知道，作者主要談?wù)摰氖强沙掷m(xù)性發(fā)展的判斷依據(jù)以及用相關(guān)一些事實(shí)來進(jìn)行佐證其論點(diǎn)。該題容易誤選D。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：閱讀理解

 Waste can be seen everywhere in the school. Some students ask for more food than they can eat and others often forget to turn off the lights when they leave the classroom. They say they can afford these things. But I don’t agree with them.
Waste can bring a lot of problems. Although China is rich in some resources(資源), we are short of(缺乏) others, for example, fresh water(淡水). It is reported that we will have no coal(煤) or oil to use in 100 years. So if we go on wasting our resources, what can we use in the future and where can we move? Think about it. I think we should say no to the students who waste things every day. Everybody should stop wasting as soon as possible.
In our everyday life, we can do many things to prevent waste from happening, for example, turn off the water taps(水龍頭) when we finish washing, turn off the lights when we leave the classroom, try not to order more food than we need, and so on. Little by little, everything will be changed. Waste can be stopped one day, if we do our best.
小題1:From the passage we know that some students often _______ in the school.
A．eat too muchB．don’t work hardC．waste thingsD．throw rubbish everywhere
小題2:Which is not mentioned in this passage?
A．Fresh water.B．Forest.C．Oil.D．Coal.
小題3:What may happen in 100 years?
A．We may still have enough oil.B．We may still have enough coal.
C．We may have a little oil.D．We may have no coal or oil to use.
小題4:Which is the best title of this passage?
A．Stop WastingB．School life
C．Waste in the SchoolD．Rich Resources in China

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

It seems that many college graduates are unsure of what to do with their lives, so they jump back into the college scene by default(違約). But graduate school is costly, time consuming and requires a lot of in-depth study, and also parents will lay down more money and banks will supply more student loans.
However, there are some students who should be pursuing graduate degrees. Teachers, lawyers, doctors, professors and ministers are a few examples of those who will benefit from class work past a bachelor’s degree. Their professions call for additional courses and more specialization and therefore higher education is a must. Still, all students in general should not adopt the idea that graduate school is necessary for individuals who want to make more money. Working hard right after college can lead to promotions in the future. It seems that it does more good to network or internship（實(shí)習(xí)）with professionals while pursing a bachelor’s degree than it does to complete a master’s and distant oneself from the world of work.
If a student graduates with a four-year degree and immediately enters the work force , he will most likely start an entry-level pay. In a couple of years this employee will gain seniority and experience, therefore increasing their chance for pay rise. He will learn the information at his job-site that he did not learn in school. His bachelor’s degree loan can be immediately chipped away ,and his maturity level can increase as real work related responsibilities set in. But, if the student pursues a master’s degree, he may be able to demand more pay initially when he finally goes job hunting, but years of serious money making as well as work experience will already be lost.
Students should not shy from the workforce just because uncertainty follows graduation. Those who pursue a graduate degree just because they do not want to leave school and because they view the “real world” as scary should think again. Using graduate studies as a hiding place from the full-time job is a waste of time.
小題1:College graduates who go to work can _____ than those who pursue graduate degrees.
A．make more money in the futureB．a(chǎn)cquire more experience
C．get a better jobD．become more responsible
小題2:The underlined words “chipped away” can most possibly be replaced by_______.
A．given outB．set downC．thrown awayD．paid off
小題3:What would be the best title for the passage?
A．College graduates shouldn’t pursue graduate degrees
B．College graduates should think twice
C．How can college graduates make more money?
D．Students use graduate school to avoid reality

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Today, there are many chances for those who wish to continue their education. However, nearly all require some break in one’s career in order to attend school full time.    　　
Part-time education, that is, attending school at night or for one weekend a month, tends to drag the process out over time and puts the completion of a degree program out of reach of many people. Additionally, such programs require a fixed time commitment which can also impact negatively on one’s career and family time. 
Of the many approaches to teaching and learning, however, perhaps the most flexible (靈活的) is that called distance learning. Distance learning is an educational method which allows the students the flexibility to study at his or her own pace to achieve the academic goals which are so necessary in today’s world. The time required to study may be set aside at the student’s convenience. Additionally, the student may enroll in distance learning courses from actually any place in the world, while continuing to pursue their chosen career. Individual assistance may be available via regular airmail, telephone, fax machine, teleconferencing and over the Internet.
Good distance learning programs are characterized by the inclusion of a subject evaluation tool with every subject, so a student doesn’t need to travel away from home to take a test. Another characteristic of a good distance learning program is the equivalence (等同) of the distance learning course with the same subject materials as those students taking the course on the home campus. The resultant diploma or degree should also be the same whether distance learning or on-campus study is employed. The individuality of the professor/student relationship is another characteristic of a good distance learning program. In the final analysis, a good distance learning program has a place not only for the individual student but also the company or business that wants to work in partnership with their employees for the educational benefit, professional development, and business growth of the organization. Supporting distance learning programs for their employees gives the business the advantage of retaining (留住) career-minded people while contributing to their personal and professional growth through education. 　　
小題1:According to the passage, which of the following is NOT a disadvantage of part time education?
A．It requires some break in one’s career. 　　
B．It tends to last too long for many people to complete a degree program.　　
C．It affects one’s career.　　
D．It gives the student less time to share with the family.
小題2: Which of the following is NOT an advantage of distance learning?  　
A．The student may choose his or her own pace.　
B．The student may study at his or her convenience.　　
C．They can pursue their chosen career while studying.　　
D．Individual assistance comes through regular airmail, telephone and fax machine.
小題3:What benefit will distance learning program bring to a business?   　　
A．Attracting more talented people.　　
B．Good image of the business.　　
C．Better cooperation with universities.　　
D．Further training of employees and business growth.
小題4: Good distance learning program have the following characteristics EXCEPT _______.    　　
A．distance learning course is the same as students taking courses on campus　
B．the diploma or degree should be the same as on campus study　　
C．professor-student relationship is strictly one to one all through the course　　
D．includes subject evaluation tool
小題5:What benefit will distance learning bring to an employee of a business?    　　
A．Higher salary.　　
B．Professional growth.　　
C．Good impression on the employer.　　
D．Good relationship with the employer.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

What makes a person a scientist？Does he have ways or tools of learning that are different from those of others？The answer is “no”. It isn’t the tools a scientist uses but how he uses these tools which make him a scientist. You will probably agree that knowing how to use a power is important to a carpenter(木匠).You will probably agree，too，that knowing how to investigate(調(diào)查)，how to discover information，is important to everyone. The scientist，however，goes one step further；he must be sure that he has a reasonable answer to his questions and that his answer he gets to many questions is into a large set of ideas about how the world works.?
The scientist’s knowledge must be exact. There’s no room for half right or right just half the time. He must be as nearly right as the conditions permit. What works under one set of conditions at one time must work under the same conditions at other times. If the conditions are different，any changes the scientist observes in a demonstration(實(shí)證)must be explained by the changes in the conditions. This is one reason why investigations are important in science. Albert Einstein，who developed the Theory of Relativity，arrived at this theory through mathematics. The accuracy(正確性)of his mathematics was later tested through investigation. Einstein’s ideas were proved to be correct. A scientist uses many tools for measurements. Then the measurements are used to make mathematical calculations(計(jì)算)that may test his investigations.
小題1:What makes a scientist according to the passage？
A．The tools he uses.B．His ways of learning.
C．The way he uses his tools.D．The various tools he uses.
小題2:“...knowing how to investigate，how to discover information，is important to everyone.” The writer says this to show_______.
A．the importance of information
B．the difference between scientists and ordinary people
C．the importance of thinking
D．the difference between carpenters and ordinary people
小題3: A sound（合理的） scientific theory should be one that_______.
A．works under one set of conditions at one time and also works under the same conditions at other times
B．doesn’t allow any change even under different conditions
C．leave no room for improvement.
D．can be used for many purposes
小題4:What is the main idea of the passage？
A．Scientists are different from ordinary people.
B．The Theory of Relativity?.
C．Exactness is the core(核心)of science.
D．Exactness and way of using tools are the keys to making of a scientist.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

More than 30 million kids buy school lunch each day. This year, many schools raised lunch prices to fight raising costs. Students pay about $2 a meal now. That is 27 cents more than last year. But they still get a good deal. The average cost for schools to produce one meal has gone up 30 cents, and is now $3. 
So, how do schools neither make money nor lose money? To start, the government pays for a small part of the difference. Schools have to make up the rest. Peggy Eller, a leader of school nutrition (營養(yǎng)) service in Hudson, Wisconsin, said her district is cutting costs by using fewer paper products and serving smaller portion(份額). Well, portion control is one key to healthful eating! 
The push for more healthful food has grown in recent years. One in five kids aged 6 to 19 is overweight. Being overweight can cause health problems. Many states passed laws that require schools to serve nutritious meals. 
Since 2004, more than 90% of all U.S. Schools have removed the fat from lunches. Foods high in fat, salt and sugar have been replaced by low-fat milk, fresh fruits and vegetables. These new items on lunch menus have encouraged kids to change their eating habits. “It makes easier to try new things at home, “said Savanna Mackey, a Florida fifth-grader.  
Students need healthful meals to grow strong and do well in school. “Rising prices won’t stand in the way,”says school nutritionist Jane Thornton. “We’ll just be more clever in how we do things.”
小題1:In the first paragraph, the author aims to tell us        .
A．the large number of kids buying school lunch
B．the average price of school lunch
C．the school's ways to deal with school lunch
D．the fact of school lunch's getting more expensive
小題2:Many school districts raised lunch prices because        .
A．there is less healthful food on the menus
B．the cost of food has gone up
C．kids often forget to bring lunch money
D．some school dining-halls are serving smaller portions
小題3:According to Paragraph 4, Savanna Mackey      .
A．doesn't like the new items on the lunch menus
B．a(chǎn)lways enjoys foods like fresh and vegetables
C．becomes interested in eating healthy food at home
D．prefers eating at school to eating at home
小題4:What can be inferred from the passage?
A．American schools solve the problem of high food prices by themselves.
B．American schools are very concerned about their students’ health.
C．Almost all schools are forced by the government to serve healthy foods.
D．American childhood overweight is mainly caused by the present lunch foods.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Welcome to your future life!
You get up in the morning and look into the mirror. Your face is firm and young-looking. In 2035, medical technology is better than ever. Many people at your age could live to be 150, so at 40, you’re not old at all. And your parents just had an anti-aging (抗衰老的) treatment. Now, all three of you look the same age!
You say to your shirt, “Turn red.” It changes from blue to red. In 2035, “smart clothes” contain particles (粒子) much smaller than the cells in your body. The particles can be programmed to change your clothes’ color or pattern.
You walk into the kitchen. You pick up the milk, but a voice says, “You shouldn’t drink that!” Your fridge has read the chip (芯片) that contains information about the milk, and it knows the milk is old. In 2035, every article of food in the grocery store has such a chip.
It’s time to go to work. In 2025, cars drive themselves. Just tell your “smart car” where to go. On the way, you can call a friend using your jacket sleeve. Such “smart technology” is all around you.
So will all these things come true? “For new technology to succeed,” says scientist Andrew Zolli, “it has to be so much better that it replaces what we have already.” The Internet is one example—what will be the next?
小題1:We can learn from the text that in the future ________.
A．people will never get old
B．everyone will look the same
C．red will be the most popular color
D．clothes will be able to change their pattern
小題2:What can be inferred from Paragraph 4?
A．Milk will be harmful to health.
B．More drinks will be available for sale.
C．Food in the grocery store will carry electronic information.
D．Milk in the grocery store will stay fresh much longer.
小題3:Which of the following is mentioned in the text?
A．Nothing can replace the Internet.
B．Fridges will know what people need.
C．Jacket sleeves can be used as a guide.
D．Cars will be able to drive automatically (自動(dòng)的).
小題4:What is the text mainly about?
A．Food and clothing in 2035.
B．Future technology in everyday life.
C．Medical treatments of the future.
D．The reason for the success of new technology.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Discover Nature Schools programs
Becoming Bears (Kindergarten-2 grade)
By becoming baby bears, children learn from their “parent” to survive the seasons. Kids will find safety in the spring and learn kinds of food bears eat during the summer, and then create a cave for winter hibernation(冬眠). After learning the skills needed to survive, students will go out of the cave as an independent black bear able to care for themselves. (1.5-2 hours)
Whose Clues? (3-5 grade)
Kids will discover how plants and animals use their special structures to survive. Through outdoor study of plants and animals, kids will recognize their special structures and learn how they enable species to eat, avoid their enemies and survive. Using what they have learned, kids will choose one species and tell how they survive in their living places. (3-4 hours)
Winged Wonders (3-5 grade)
Birds add color and sound to our world and play an important ecological (生態(tài)的) role. Students will learn the basics of birds, understand the role birds play in food chains and go bird watching using field guides and telescopes. Students will do hands-on activities. Students will use tools to build bird feeders, allowing them to attract birds at home.(3-4 hours)
Exploring Your Watershed (6-8 grade)
We all depend on clean water. Examining how our actions shape the waterways around us. Go on a hike to see first-hand some of the challenging water quality problems in a city. Students will test the water quality to determine the health of an ecosystem.
● Each program is taught for a class with at least 10 students.
● All programs include plenty of time outdoors. So please prepare proper clothing, sunscreen and
insect killers for children.
● To take part in a program , please email dcprograms@mdc.mo.gov.
小題1:What can kids do at Becoming Bears?
A．Watch bears’ performances.
B．Take care of bears
C．Dress up as baby bears to learn about bears.
D．Learn how to survive a bear attack.
小題2:Kids who are interested in plants will choose______________.
A．Winged WondersB．Exploring your Watershed
C．Becoming BearsD．Whose Clues?
小題3:According to the passage, all the four programs _____________.
A．have the same teaching hours
B．have outdoor activities
C．a(chǎn)re offered during summer holidays
D．a(chǎn)re designed for primary school students

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

About ten men in every hundred suffer from color blindness in some way. Women are luckier, only about one in two hundred is affected in this matter. Perhaps, after all, it is safer to be driven by a woman!
There are different forms of color blindness. In some cases a man can not see deep red. He may think that red, orange and yellow are all shades of green. Sometimes a person cannot tell the difference between blue and green. In rare cases an unlucky man may see everything in shades of green - a strange world indeed.
Color blindness in human beings is a strange thing to explain. In a single eye there are millions of very small things called “cones”. These help us to see in a bright light and to tell difference between colors. There are also millions of “rods” but these are used for seeing when it is nearly dark. They show us shape but no color.
Some insects have favorite colors. Mosquitoes (蚊子) like blue but do not like yellow. A red light will not attract insects, but a blue lamp will. In a similar way human beings also have favorite colors. Yet we are lucky. With the aid of the cones in our eyes we can see many beautiful colors by day, and with the aid of the rods we can see shapes at night. One day we may even learn more about the invisible (看不見的) colors around.
小題1:Why do some people say it is safer to be driven by women?
A．Women are more careful.
B．There are few color-blind women.
C．Women are fonder of driving than men.
D．Women are weaker but quicker in thinking
小題2:This passage is mainly about ________.
A．color and its surprising effects
B．women being luckier than men
C．danger caused by color blindness
D．color blindness
小題3:According to the passage, with the help of the “cones”， we can ________.
A．tell orange from yellow
B．see in weak light
C．kill mosquitoes
D．tell different shapes
小題4:We can attract and kill mosquitoes by using a ________.
A．red lightB．yellow lightC．blue lightD．green light

查看答案和解析>>

同步練習(xí)冊(cè)答案