Popeye the Sailor first became a popular cartoon in the 1930s.The sailor in that cartoon ate lots of spinach(菠菜) to make him strong. People watched him, and they began to buy and eat a lot more spinach. Popeye helped sell 33 percent more spinach than before! Spinach became a necessary part of many people’s diets. Even some children who hated the taste began to eat the vegetable.
Many people thought that the iron in spinach made Popeye strong, but this is not true. Spinach does not have any more iron than any other green vegetable.
People only thought spinach had a lot of iron because the people who studied the food made a mistake. In the 1890s, a group of people studied what was inside vegetables. This group said that spinach had ten times more iron than it did. The group wrote the number wrong, and everyone accepted it.
Today, we know that the little iron there is in spinach cannot make a difference in how strong a person is. However, spinach does have something else which the body needs—folic acid(葉酸).
It is interesting to point out that folic acid can help make a person strong. Maybe it was really the folic acid that made Popeye strong all along.   
小題1:A good title for this reading passage is______.
A.Popeye the Sailor
B.The Truth About Spinach
C.A Mistake with Numbers
D.Folic Acid Makes You Strong
小題2:Why did many people eat spinach after they saw Popeye the Sailor?
A.They thought spinach made them strong.
B.They thought Popeye was funny.
C.Spinach had a lot of iron.
D.People liked folic acid.
小題3:A research group told people that spinach______.
A.made Popeye strong
B.was a green vegetable
C.had less iron than other green vegetables
D.had more iron than other green vegetables
小題4:Folic acid is ______.
A.something in food
B.a(chǎn) vegetable
C.dangerous
D.a(chǎn) certain kind of spinach

小題1:B
小題2:A
小題3:D
小題4:A
文章介紹了關(guān)于菠菜的真相,菠菜里面并不是含有非常多的鐵元素,而是葉酸。
小題1:B 主旨大意題。文章解釋了關(guān)于菠菜的真相,菠菜里面并不是含有非常多的鐵元素,而是葉酸。故B正確。
小題2:A 細節(jié)題。根據(jù)第二段第一行Many people thought that the iron in spinach made Popeye strong可知A正確。
小題3:D 細節(jié)題。根據(jù)第三段第3行This group said that spinach had ten times more iron than it did.可知D正確。
小題4:A 細節(jié)題。根據(jù)文章最后兩段可知在蔬菜里含有很多葉酸。故A正確。
練習冊系列答案
相關(guān)習題

科目:高中英語 來源:不詳 題型:完形填空

In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural   36  seemed to be unlimited.
Today things are   37  . The world has become too   38  . We are   39  our natural resources too quickly, and at the same time we are   40  our environment with dangerous chemicals. If we   41  to do this, human life on earth will not   42 .
People realize today that if too many   43  are taken from the sea, there will soon be none left. Yet, with modern fishing   44  , more and more fish are caught.
We know that if too many trees are cut down,   45  will disappear and nothing will  46  on the land. Yet, we continue to use bigger and more powerful machines to   47  more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die.   48  , in most countries waste products are still put into rivers or into the sea, and there are few laws to   49  this.
We also know that if the   50  of the world continues to rise at the present rate, in a few years, there won't be enough food. What can we do to solve the   51  ? If we eat more vegetables and less   52  , there will be more food available for everyone. Land that is used to grow crops feeds five times more people than land where animals are kept.
Our natural resources will   53   longer if we learn to recycle them. The world population will not   54  so quickly if people use modern methods of birth control.
Finally, if we   55  people to think about the problems we shall have a better and cleaner planet in the future.
小題1:
A.resourcesB.sourcesC.materialsD.matter
小題2:
A.commonB.the sameC.changeableD.different
小題3:
A.crowdedB.pollutedC.dirtyD.busy
小題4:
A.producingB.using upC.reducingD.making
小題5:
A.protectingB.savingC.pollutingD.fighting
小題6:
A.tryB.continueC.stopD.have
小題7:
A.liveB.lastC.continueD.survive
小題8:
A.fishB.seagullsC.crocodilesD.frogs
小題9:
A.polesB.boatsC.methodsD.ideas
小題10:
A.mountainsB.the seaC.cropsD.forests
小題11:
A.growB.plantC.saveD.cut down
小題12:
A.plantB.cut downC.saveD.burn down
小題13:
A.ThusB.HoweverC.Generally speakingD.Therefore
小題14:
A.encourageB.neglectC.stopD.wake up
小題15:
A.productionB.pollutionC.populationD.revolution
小題16:
A.pollutionB.environmentC.questionsD.problems
小題17:
A.fruitB.meatC.fishD.grain
小題18:
A.useB.stayC.keepD.last
小題19:
A.raiseB.riseC.runD.grow
小題20:
A.forceB.helpC.educateD.show

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Joker found one of the biggest diamonds in the world right in his own back yard. He sold the stone to a diamond dealer for over three hundred thousand dollars. In New York, the diamond was resold---this time for almost eight hundred thousand dollars. The true value of a diamond is never known until it has been cut. Once cut successfully, its value can increase a thousand times. It's easy to understand why the owner of Joker's diamond went to the best diamond cutter he knew, Kaplan. The cutter studied the diamond for twelve whole months.
When he felt he was ready to start work, he discovered a flaw (瑕疵) . He had to begin his calculations all over again, or he might have made the stone useless. Six months passed, and Kaplan finally said to the owner, “I am ready to start my work. There will be one excellent diamond that will be comparable one excellent diamond of first-class quality (質(zhì)量)  " Kaplan waited a few more days until he felt he was in the best physical and mental (精神的) condition(條件) possible. He picked up his tools (工具) and held his breath as he made the diamond exactly as he promised.
小題1:Joker found one of the biggest diamonds in the world_________.
A.in a minuteB.a(chǎn)t the foot of a big mountain
C.in his own back yardD.in a garage (汽車庫)
小題2:A diamond dealer is a person ___________.
A.in the diamond businessB.who stole diamonds
C.who cuts diamondsD.who sells diamonds
小題3:When the diamond was resold,____________.
A.the dealer lost a lot of money
B.Joker made some more money
C.the dealer got 800, 000 dollars
D.Kaplan got 800,000 dollars
小題4:The owner of the diamond thought that if the diamond was cut successfully it might be worth_________.
A.$ 300, 000B.$ 500,000
C.$ 300, 000D.$ 800,000,000
小題5:Kaplan studied the diamond for____________.
A.more than one and a half years
B.more than half a year
C.over eight months
D.more than nineteen months

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Roughly speaking, teachers in traditional education may feel that students are too young to know much about the world, and have to be told what to do most of the time. By contrast, open education offers teachers quite different feelings. Students are expected to be responsible for their own education—to discover subjects by themselves instead of being made to study them. This way of teaching allows the students to grow independently and to develop their own interests in many subjects. Some students who do badly in a traditional classroom will be happier in an open classroom and enjoy learning. They will not have to worry about grades or rules at all.
However, many students won’t do well in an open classroom. For these students, they will do little in school if there are too few rules. They will not make good use of open education, which is so different from traditional class, because they may have a problem getting used to making so many choices on their own. For them it is important to have some rules to direct them. They may worry about the rules even when there are no rules. In addition to that, some traditional teachers do not believe in open education and do not like it either.
Since both of some good points and bad points of the open education have been explained clearly, you may have your own opinion on the issue. Personally, I think that the concept of open education is good only in theory. In actual fact, it may not work very well in a real class or school. I believe, most students, but of course not all students, need some structure in their classes. They may want and need to have rules.
In some cases, they must be made to study some subjects. Many students are pleased to find subjects they have to study interesting. They would not study those subjects if they did not have to.
小題1:Open education allows the students to_________________.
A.grow as the educated
B.be responsible for their life
C.discover subjects outside class
D.develop their own interests
小題2:Open education may be a good idea for the students who __________.
A.worry about grades and rules
B.a(chǎn)ren’t used to making choices
C.do well in a traditional classroom
D.enjoy having some rules in class
小題3:Some students will do little in an open classroom because___________.
A.there are too many rules
B.they don’t like activities
C.there are too few rules
D.they worry about the rules
小題4:Which of the following best summarizes the passage?
A.Open education is a really complex idea.
B.Open education is better than traditional education.
C.Traditional teachers don’t believe in open education.
D.The writer thinks open education is practical.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Are some people born clever, and others born stupid? Or is intelligence developed by our environment and our experiences? Strangely enough,the answer to both these questions is yes. To some extent(程度)our intelligence is given to us at birth,and special education can never make a genius(天才) out of a child born with low intelligence. On the other hand, a child who lives in a boring environment will develop his intelligence less than one who lives in rich and varied surroundings. Thus the limits of a person’s intelligence are fixed at birth, but whether or not he reaches those limits will depend on his environment. This view, now held by most experts can be supported in a number of ways.
It is easy to say that intelligence is to some extent something we are born with. The closer the blood relationship between two people, the closer they are likely to be in intelligence. Thus if we take two unrelated people at random from the population, it is likely that their degrees of intelligence will be completely different. If on the other hand we take two identical twins, they  will very likely be as intelligent as each other. Relations like brothers and sisters,parents and children,usually have similar intelligence, and this clearly suggests that intelligence depends on birth.
Imagine that now we take two identical twins and put them in different environments. We might send one, for example, to a university and the other to a factory where the work is boring. We would soon find differences in intelligence developing, and this indicates that environment as well as birth plays a part. This conclusion is also suggested by the fact that people who live in close contact with each other, but who are not related at all, are likely to have similar degrees of intelligence.
小題1:By using the example that two people closer in blood relationship are closer in intelligence that writer wants to prove    _    .
A.intelligence can be developed by environment
B.intelligence is given at birth
C.intelligence can be developed by experience
D.education plays an important part in the development of education
小題2:A child who lives in rich and varied surroundings turns out higher in intelligence because ________.
A.his family is rich and therefore can afford to develop his intelligence
B.he can break the limits of intelligence fixed at birth
C.his family is rich and provides him with various healthy food
D.these surroundings are likely to help him reach the limits of their intelligence
小題3:In the second paragraph “if we take two unrelated people at random from the population...” means “if we ____.”
A.choose two persons who are relative
B.take out two different persons
C.choose two persons with different intelligence
D.pick any two persons
小題4:The best title for this passage might be __________.        
A.Birth and EnvironmentB.Intelligence
C.The Answer to a QuestionD.Intelligence and Education

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

When we look at the sky and see a bright light moving quickly across it or coming towards the earth, we talk about seeing a “shooting star” or a “falling star”. These moving lights are not, in fact, stars at all. They are small pieces of matter from outer space, which burn up as they enter the Earth’s atmosphere. The correct name of them is meteoroids. Any pieces that make it to the Earth’s surface without completely burning up are known as meteorites. A meteor is actually the name given to the light we see when a meteoroid is burning up.
When a meteorite hits the Earth at speeds between 11 and 72 kilometers a second, it can do amazing damage. A very large meteorite could knock the earth out of its orbit. If this happened, all life on Earth would probably become extinct(滅絕). The path we follow around the Sun would change and as a result the Earth would become either much hotter or much colder. This change in temperature would affect sea levels and the amount of water in rivers. There would either be huge floods, which would cover most of the land with water, or the oceans would dry up and there would be a drought, which means a long period of time without rain. Either way, nothing could survive. If a large meteorite landed in the sea it would almost certainly cause tsunamis, which would race towards the land, destroying everything in their paths.
Although it is unlikely the Earth will be struck by a meteorite large enough to do that kind of damage, there is evidence of fairly large meteorites hitting the Earth in the past. In 1908 a large area of forest in Tunguska, Siberia was destroyed by a meteorite that came apart just before it hit the ground. The moon, however, has about three billion craters隕石坑caused by meteorites impacting影響 its surface. The reason more meteorites have reached the surface of the moon than the surface of the Earth is that the moon does not have enough atmosphere for the meteorites to burn up in. some of the meteorites that have reached the Earth’s surface have done considerable damage. Some scientists believe it was a change of climate caused by meteorites hitting the Earth that resulted in the extinction of the dinosaurs and other large prehistoric animals.
Scientists are especially interested in meteorites because they contain information about the solar system. It is widely believed by scientists that most meteorites are produced by collisions(碰撞) between asteroids (small planets). These collisions probably happened many billions of years ago. This means the physical and chemical structure of a meteorite can give scientists information about the early days of the universe.
小題1:The story is about ___.     
A.floods caused by meteors
B.matter from outer space
C.life on Earth millions of years ago
D.meteorites that have damaged the moon
小題2:The Earth has ___.                    
A.three billion craters
B.fewer craters than the moon
C.more craters than the moon
D.a(chǎn) thinner atmosphere than the moon
小題3:Some scientists believe the dinosaurs became extinct because ___.     
A.they were hit by meteors
B.meteorites landed on their nests
C.meteorites landed and changed the climate
D.they could no longer breathe the atmosphere
小題4:Meteors are ___.                                         
A.small planets
B.the same as asteroids
C.from broken parts of asteroids
D.the light we see when meteoroids hit our atmosphere

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Should e­cigarettes (electronic cigarettes) be a new choice for the smokers trying to get rid of the habit? Reactions from Americans are mixed.More than half of the people questioned in a survey think e­cigarettes should be controlled by the US Food and Drug Administration,but 47 percent believe the e­cigarettes should be available to the smokers who want to quit.
“In the hunt for a safer cigarette,e­cigarettes are becoming a popular choice among those either trying to quit or looking to replace standard tobacco smoke with an alternative that manufacturers claim to be safer,” Zogby International,which conducted the survey,said in a statement.
About half of the 4,611 adults who took part in the survey had heard about e­cigarettes,which are battery­powered,or rechargeable cigarettes that vaporize a liquid nicotine solution.They do not produce smoke but a water vapor without smell.Sold mostly on the Internet,e­cigarettes were first made in China.
Last year the World Health Organization (WHO) warned against using e­cigarettes,saying there was no evidence to prove they were safe or helped smokers break the habit.The WHO said people who smoke e­cigarettes breathe in a fine fog of nicotine into the lungs.
Nearly a third of people questioned in the survey think that e­cigarettes should be allowed in places where smoking is forbidden,because they don’t produce smoke,but 46 percent disagree.Men who were aware of the availability of e­cigarettes were more likely than women to say they should be a choice available to smokers who want to quit.Young people,aged 18-29,and singles were the groups most open to trying e­cigarettes.Smoking is the single largest cause of preventable death worldwide,according to the WHO.
小題1:What can we learn from Paragraph 1?
A.American smokers ought to try e­cigarettes.
B.Americans have different opinions about e­cigarettes.
C.Every kind of cigarettes should be forbidden in America.
D.Most of the Americans don’t like e­cigarettes.
小題2:According to Zogby International,e­cigarettes ______.
A.a(chǎn)re much safer than common cigarettes
B.a(chǎn)re popular among people who want to quit smoking
C.will take the place of traditional cigarettes
D.a(chǎn)re produced in a safer way by manufacturers
小題3:What do we know about e­cigarettes from the passage?
A.Most Americans are familiar with them.
B.They are a good choice as there is no nicotine.
C.They produce a water vapor that can’t be seen.
D.Most people buy them on the Internet.
小題4:What’s the attitude of the WHO towards e­cigarettes?
A.NegativeB.SupportiveC.DoubtfulD.Indifferent

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Learning a Second Language
Some people learn a second language easily. Others have trouble learning a new language. How can you help yourself learn a new language, such as English? There are several ways to make learning English a little easier and more interesting.
The first step is to feel positive about learning English. If you believe that you can learn, you will learn. Be patient. You do not have to understand everything all at once. It is natural to make mistakes when you learn something new. We can learn from our mistakes. In other words, do not worry about taking risks.
The second step is to practice your English. For example, write a diary every day. You will get used to writing it in English, and you will feel comfortable expressing your ideas in English. Several weeks later, you will see that your writing is improving. In addition, you must speak English every day. You can practice with your classmates outside class. You will all make mistakes, but gradually you will become comfortable communicating in English.
The third step is to keep a record of your language learning. You can write this in your journal. After each class, think about what you did. Did you answer a question correctly? Did you understand something the teacher explained? Perhaps the lesson was difficult, but you tried to understand it.
You must be positive about learning English and believe that you can do it. It is important to practice every day and make a record of your achievements. You will enjoy learning English, and you will feel more confident in yourself.
小題1:To feel positive about learning English means _______.
A.if you are patient, you will learn
B.you can understand everything all at once
C.if you make mistakes, you can learn from your mistakes
D.if you believe you can learn, you will learn
小題2:When you learn English, you do not need to ______.
A.be patientB.make mistakes
C.express your ideas in EnglishD.understand everything all at once
小題3:What is not helpful for you to enjoy learning English?
A.To communicate in English.
B.To worry about taking risks.
C.To think about what has been done after each class.
D.To make a record of the achievements.
小題4:What is the main idea of this passage?
A.It is very important to learn a second language.
B.Some people learn a second language easily while other people do not.
C.There are ways to help you learn a second language more easily.
D.Don’t worry about taking risks when learning a second language.
小題5:What does the underlined word “journal” in the 4th paragraphmean?
A.DiaryB.CompositionC.PoemD.Newspaper

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Knowing the best way to study will help you to be a better student.By using your time properly,you can do your homework more quickly.Learning to stuady is not difficult.
The first thing to remember is that you must be willing to learn.It doesn’t mean that you must always like the subject.It does mean,however,that you must be willing to do whatever is necessary to learn.Try to understand why it is important and how it will help you now and later to do and learn other things.Knowing mathematics facts will be useful in your whole life.Knowing how to spell makes any kind of writing easier.Sometimes a subject that you think is going to be uninteresting will be exciting when you begin to work at it and understand it more clearly.Learning things can be fun if you are willing to work with them.
Here’s some advice for you:have a certain time each day and a quiet place with good lighting for study,so that you can concentrate(集中)on your study without interruptions(中斷,打斷);have everything ready before you sit down to study—a dictionary,paper,a pen and books;be sure you understand what you should learn before you start;read carefully and pay special attention to the most important things;when memorizing(記憶), first find out the main parts and then recite(背誦)the whole thing;check your homework after you finish it:never forget the importance of review and preview
小題1:The main idea of the text is         
A.to prove that learning is not difficult
B.to make the readers be interested in study
C.to tell the importance of self-teaching
D.to tell the students how to study well
小題2:The first thing to remember in studying is that         
A.you must like the subject
B.you must follow the teacher
C.you must enioy learning
D.you must study hard
小題3:What does the underlined word“preview”mean?
A.To go over.
B.To review again.
C.To view in advance.
D.To discuss.
小題4:Which of the following is NOT the advice given in the text?
A.To put a pen,paper and books beside you before study.
B.To study at any possible time and place.
C.To review and preview.
D.To pay attention to the most important things。

查看答案和解析>>

同步練習冊答案