All of us eat every day, but most of us don’t understand nutrition(營養(yǎng)). How much do you know about good nutrition? Are the following statements true or false?
1. People who don’t eat meat can stay healthy.
True. As long as people eat enough milk, eggs and meat alternates(替代物), they can get enough protein.
2. Fresh vegetables cooked at home are always more nutritious than canned vegetables.
False. The difference depends more on how vegetables are prepared than whether they are fresh or canned. Vegetables cooked in too much water can lose a large quantity of vitamins.
3. Food eaten between meals can be just as good for health as food eaten at regular meals.
True. Nutritional value depends on what types of food you eat, not when you eat them. Eating an egg or an orange between meals can contribute to a good diet.
4. Taking extra vitamins beyond the recommended daily allowances won’t give you more energy.
True. It’s widely believed that extra vitamins provide more energy. But taking more than the baby needs doesn’t make it function better, just as overfilling your gas tank doesn’t make your car run better.
5. Natural vitamins are better supplements(補充)for the diet than synthetic vitamins.
False. There is no difference. A vitamin has the same properties(性質(zhì))and specific chemical structure whether made in a laboratory or taken from plant or animal parts.
6. Older people need the same amount of vitamins as younger people.
True. Older people need the same quantity of vitamins as younger people although they need fewer calories. Certain illnesses raise the requirements for some vitamins, but that is true for the young as well as the old.
7. Food grown in poor soil is lower in vitamins than food grown in rich sold.
False. The vitamins in our foods are made by the plants themselves. They don’t come from the soil.
However, the minerals in a plant depend on the minerals in the soil.
If you have answered these questions correctly, you can say you know much about food and nutrition by today’s standards. But remember that nutrition is a growing science and that may be aged as new information is obtained.
【小題1】The main purpose of the passage is to           .

A.list today’s standards of some food and nutrition
B.introduce what should be eaten and what not
C.explain what is helpful to your health and what is not
D.test our nutrition IQ by judging the problems listed
【小題2】From the surrounding words and sentences we know that the underlined phrase “contribute to” means         .
A.help to bring aboutB.take the place of
C.make room forD.turn to
【小題3】The underlined word “synthetic” most probably means       in Chinese.
A.不同的B.特別的
C.合成的D.天然的


【小題1】A
【小題2】A
【小題3】C

解析試題分析:文章大意:我們每天都吃飯,但絕大多數(shù)人并不懂營養(yǎng)學。本文列舉了今天一些食物和營養(yǎng)的標準。
【小題1】主旨大意題。根據(jù)文章大意:我們每天都吃飯,但絕大多數(shù)人并不懂營養(yǎng)學。本文列舉了今天一些食物和營養(yǎng)的標準。故A正確。
【小題2】詞義推測題。根據(jù)文章Eating an egg or an orange between meals can contribute to a good diet.可知contribute to為“帶來”之意。故A正確。
【小題3】詞義推測題。根據(jù)文章中Natural vitamins are better supplements(補充)for the diet than synthetic vitamins.可以推測出synthetic為“合成的”之意。故C正確。
考點:考查科普類短文閱讀

練習冊系列答案
相關(guān)習題

科目:高中英語 來源: 題型:閱讀理解

In modern society there is a great deal of argument about competition . Some value it highly , believing that it is responsible for social progress and prosperity . Others say that competition is bad ; that it sets one person against another ; that it leads to unfriendly relationship between people .
I have taught many children who held the belief that their self-worth relied (依賴)on how well they performed at tennis and other skills . For them, playing well and winning are often life-and-death affairs. In their single-minded pursuit ( 追求)of success , the development of many other human qualities is sadly forgotten .
However ,while some seem to be lost in the desire to succeed , others take an opposite attitude .In a culture which values only the winner and pays no attention to the ordinary players , they strongly blame competition . Among the most vocal  are youngsters who have suffered under competitive pressures from their parents or society . Teaching these young people . I often observe in them a desire to fail . They seem to seek failure by not trying to win or achieve success . By not trying , they always have an excuse : “I may have lost . but it doesn’t matter because I really didn’t try . “What is not usually admitted by themselves is the belief that if they had really tried and lost, that would mean a lot . Such a loss would be a measure of their worth . Clearly, this belief is the same as that of the true competitors who try to prove themselves . Both are based on the mistaken belief that one’s self-respect relies on how well one performs in comparison with others . Both are afraid of not being valued . Only as this basic and often troublesome fear begins to dissolve (緩解) can we discover a new meaning in competition .
【小題1】What does this passage mainly talk about ?

A.Competition helps to set up self-respect .
B.Opinions about competition are different among people
C.Competition is harmful to personal quality development .
D.Failures are necessary experiences in competition
【小題2】Why do some people favor competition according to the passage ?
A.It pushes society forward . B.It builds up a sense of duty .
C.It improves personal abilities . D.It encourages individual efforts
【小題3】The underlined phrase “the most vocal” in Paragraph 3 means        .
A.those who try their best to win
B.those who value competition most highly
C.those who are against competition most strongly
D.those who rely on others most for success
【小題4】Which point of view may the author agree to ?
A.Every effort should be paid back .
B.Competition should be encouraged .
C.Winning should be a life-and-death matter .
D.Fear of failure should be removed in competition

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

In the north of Scotland there is a lake called Loch Ness. It is the biggest lake in Britain. It is over thirty kilometres long and in places nearly 300 meters deep. It is cold and dark and not many people went there until after 1930. Then a road was made around the lake. Holiday makers began to use the road, and this was when the stories began.
Someone said that he had seen a monster in the lake. He said it was twelve meters long. It had a long neck and a small head. Then someone else said he had seen it. Others said the same thing and in 1933 a London doctor took a photo. It looked like a monster with a long neck and a thick body but the photo was not dear. The newspapers printed the picture and called it the Loch Ness monster, or "Nessie".
Then the argument began. Some people, however, were certain there was something living in the lake. Others said there was nothing there.
In 1961, a lot of people joined together to make a real effort to see and photograph the monster if there was one! Several times people thought they saw something but after ten years there was still no real proof.
Later underwater television cameras were used, but no one found any real proof. However, they did find something interesting: a huge underwater cave. It was big enough to be home of a monster, but of course, this was not a proof.
In 1975, however, some American scientists formed a search group. They used an underwater camera. It took pictures every seventy seconds. Some of the pictures seemed to show a red-brown creature. Its body was about four meters long and had a very ugly head on the end of a four meter neck. Many people then began to believe in the monster. But even today we can not be certain.
【小題1】Before 1930, ____.

A.few people went to Loch Ness Lake
B.many people had been there
C.nobody went to the lake
D.nobody knew about the lake
【小題2】What did the monster look like?
A.It looked like a horse.
B.It was a creature with a long neck and a small head.
C.It looked beautiful.
D.It was tiny and pretty.
【小題3】Who first took a photo of the monster?
A.An American
B.A television camera
C.A holiday-maker
D.A doctor from London
【小題4】A search group formed by some American scientists.
A.found the monster itself
B.found a huge cave under water
C.believed that there wasn't any monster at all
D.took some pictures which seemed to show a monster

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

Have you ever thought, “I wish I could take a year off and just travel around the word?” Well, three lucky American teenagers were able to do just that. The teens — two males and one female — got an all-expenses paid, yearlong hike to five continents.
This trip didn’t include any five-star hotels or shopping funs. Eighteen-year-old Jamie Fiel from Keller, Texas, 17-year-old Arsen Ewing from Canyon, California, and 16-year-old Tyler Robinson from Lincoln, Massachusetts, didn’t expect fancy treatment. They signed up for the experience of a lifetime, which included hard work, often uncomfortable accommodations, and encounters with some of nature’s most dangerous animals and environments.
Jamie, Arsen, and Tyler were among hundreds of high school kids nominated by their science teachers to take this trip. Earthwatch Institute sponsored this adventure. Each year, Earthwatch employs thousands of volunteers worldwide to help with scientific research projects.
The group went all around the world to get a close look at the most pressing environmental issues of our time. Their assignments were as varied as their locations, and included measuring and attending pink flamingos in Kenya’s Great Rift Valley, and tracking giant sea turtles in Costa Rica.
As they worked with the Earthwatch scientists, Jamie, Arsen, and Tyler began to understand that we are at a critical moment in the life of our planet. Time for change is running out. As the teens went from country to country and witnessed different environmental dangers and challenges, they understood that solutions to important environmental issues start with the power of one person’s actions. They realized that each of them can make a difference.
【小題1】These teenagers went on the journey around the world      .

A.to experience the most serous environmental problems on the earth
B.to bring the kindness of America to the other parts of the world
C.to go on sightseeing around the world
D.to call on more teenagers to join Earthwatch Institute
【小題2】What’s TRUE about their journey?
A. They had to pay for their journey on their own expense.
B, They often had to move from one hotel to another.
C. They had to take great pains to collect environmental information.
D. They received a warm welcome every time they arrived at a new place.
【小題3】It can be inferred that Earthwatch Institute could be          .
A. an international university that takes in students from all over the world
B. a TV station that makes programmes on the beautiful scenery of the earth
C. a travel agency that organizes adventure trips specially for school children

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

Sometimes, the simplest ideas are the best. For example, to absorb heat from the sun to heat water,you need large, flat, black surfaces. One way to do that is to build those surfaces specially, on  the roofs of buildings. But why go to all that trouble when cities are full of black surfaces already, in the form of asphalt (柏油) roads?
Ten years ago, this thought came into the mind of Arian de Bondt, a Dutch engineer. He finally persuaded his boss to follow it up. The result is that their building is now heated in winter and cooled in summer by a system that relies on the surface of the road outside.
The heat-collector is a system of connected water pipes. Most of them run from one side of the street to the other, just under the asphalt road. Some, however, dive deep into the groun.
When the street surface gets hot in summer, water pumped through the pipes picks up this heat and takes itunderground through one of the diving pipes. At a depth of 100 metres lies a natural aquifer(蓄水層) into which heat several heat exchangers (交換器) have been built. The hot water from the street runs through these exchangers, warming the ground-water, before returning to the surface through another pipe. The aquifer is thus used as a heat store.
In winter, the working system is changed slightly. Water is pumped through the heat exchangers to pick up the heat stored during summer. This water goes into the building and is used to warm the place up. After performing that task, it is pumped under the asphalt and its remaining heat keeps the road free of snow and ice.
【小題1】Which of the following is true according to the first two paragraphs?

A.Arian de Bondt got his idea from his boss.
B.Large, flat, black surfaces need to be built in cities.
C.The Dutch engineer's system has been widely used.
D.Heat can also be collected from asphalt roads.
【小題2】 For what purpose are the diving pipes used?
A.To absorb heat from the sun.
B.To store heat for future use.
C.To turn solar energy into heat energy.
D.To carry heat down below the surface.
【小題3】From the last paragraph we can learn that __
A.some pipes have to be re-arranged in winter
B.the system can do more than warming up the building
C.the exchangers will pick up heat from the street surface
D.less heat may be collected in winter than in summer
【小題4】What is most likely to be discussed in the paragraph that follows?
A.What we shall do if the system goes wrong .
B.What shall we do if there are no asphalt roads
C.How the system cools the building in summer .
D.How the system collects heat in spring and autumn.

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

The Cave of Lascaux
It was Thursday, September 12,1940.Four French teens were out exploring in the woods off the northern slopes of the Pyrenees.Many years before, an old pine tree fell and left a large hole in the ground.The teenagers were curious and they started to explore the area and fell into one of the most important archeological(考古的) finds of the twentieth century!
There are over a hundred limestone(灰?guī)r) caves in this region of France.Some were inhabited by humans thousands and thousands of years ago.Between 15,000 and 17,000 years ago, humans painted lively creatures such as cows, bulls, horses, and even cats on the walls of the caves.
Why did they mark these walls? Was it to tell a story? Was it to record a famous battle? There are many mysteries and ancient secrets still waiting to be discovered in the cave of Lascaux.There were dots in many of the paintings.What do these dots mean? Were they meant to record time, a calendar? Deep in the cave, there is a drawing of a “birdman”.What does this mean? Was it a place for sacred ceremonies? No one knows for sure.
The actual cave of Lascaux was closed in 1963 due to the overabundance of tourists visiting the site.The carbon dioxide that people were breathing out was causing damage to the fragile(易損的) cave paintings.Up till now the Lascaux cave is still closed for tourists.Only a specialist can visit the cave by a special order that must be made out almost a year in advance.Not more than six persons can enter the cave per day.Two days a week, the cave is completely closed.Due to the great interest of numerous tourists, in 1983 Lascaux Ⅱwas opened for tourism.It is an exact replica of the cave of Lascaux.
【小題1】The Pyrenees are the __________ in France.

A.mountains B.forests 
C.rivers D.caves 
【小題2】What does the underlined word “inhabited” in the second paragraph mean?
A.built B.explored C.lived in D.destroyed 
【小題3】In the author's opinion, the cave paintings are __________.
A.old B.beautiful 
C.easily damaged D.interesting 

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

You can’t hide a natural disaster from children, so how do we prepare them for it? First of all, you should explain to them that acts of nature aren’t necessarily disasters but can become one. These may include floods, hurricanes, tornadoes, winter storms, wild fires, and earthquakes. The way to prepare children for these disasters is to educate them about what each type is and then make it fun by making them “Disaster Masters” or whatever title you can think of.
Making them a Disaster Master won’t be easy. They must know what’s in a disaster emergency kit(工具箱) and why it’s included. You can get your friends involved, too. If your friends have children, they may want to be involved in your emergency preparations. Make it a group project. This is the opportunity for everyone to become familiar with the equipment.
We have to be aware of our conduct and the way we react to stress. The children will be easily influenced by your attitude and demeanor. The calmness, steady manner, and good humor of your spouse (配偶) and you will go a long way toward the easing or the reduction of stress.
Explain to them what they’re likely to encounter or see and describe how people may react. Disasters can come and go very quickly and generally don’t last long. If you must stay away from home, try to get into a routine quickly and encourage them to make new friends. Let them know they can look to their parents and other adults if they become scared or confused. And it’s important to let them know it’s OK to cry during a disaster.
It’s sometimes helpful to let the children draw pictures of what they’ve experienced. Encourage them to write what they learned and what could have been done better. Save the story. Make it part of a documented family history!
【小題1】This passage was written mainly to tell us about ______.

A.the importance of mutual help in disaster preparation
B.tips for preparing children for a natural disaster
C.the importance of educating children about natural disasters
D.ways to raise children’s courage in natural disasters
【小題2】It is a must that a Disaster Master knows ______.
A.when a natural disaster will come
B.why there are natural disasters
C.how to use a disaster emergency kit
D.how to teach others about emergency preparations
【小題3】The underlined word “demeanor” in Paragraph 3 can be replaced by “______”.
A.personality B.lifestyle
C.emotion D.behavior
【小題4】When they meet with a natural disaster, children ______.
A.must write down what they see and how they feel
B.should believe that the disaster will never last long
C.can cry if they are frightened
D.should help other children despite the danger
【小題5】The author wrote the passage mainly for ______.
A.parents B.young children
C.teachers D.college students

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

Urban citizens(市民)can enjoy a more colorful life than rural citizens.Townspeople are well­informed because they have the easier access to news,while country people are uniformed because these districts are hard to get to.Urban traffic is so well­developed that the residents there often visit exhibitions and parks which are only a short bus ride away. For country people this is a major operation which involves considerable planning.Shopping,a necessary activity in everyday life is more convenient in the city than in the countryside. Townspeople can buy what they want at any time of a day.But rural residents go to town at most once a week.So after shopping they always stagger home loaded with heavy purchases. As for as meals and clothes concerned,townspeople are well­fed and well­dressed as there is an adequate(足夠的)supply of goods.But rural residents are too busy to pay particular attention to them.It is for these reasons that more and more people are moving into the city and looking for a rest there.
On the contrary,some people are attracted by the rural area.Air pollution,noise and overcrowding which are the biggest problems confronting townspeople seem strange for rural residents.Medical studies have proved that rural residents can live longer than urban residents, because they are free from a polluted environment. In addition,the crime rate in the city is several times higher than in the countryside.As is known to all,the life in any city is much more expensive than in the countryside.So the safe, quiet and cheap life in the country appeals to(對……有吸引力)many city residents.
Either an urban or a rural area gives pleasure and trouble.But,I believe,the suburban area has the excellencies(優(yōu)點)of both and is superior to both.As the automobile industry develops,more and more people will make their homes in suburban areas.
【小題1】When visiting an exhibition in town,country people have to ________.

A.listen to local news  B.take a bus  
C.make a careful plan D.a(chǎn)sk friends for help 
【小題2】Paragraph 1 mainly tells us the differences between urban and rural life in ________.
A.communication,traffic and shopping 
B.traffic,shopping and diet 
C.education,living conditions and housing 
D.traffic,medicine and shopping 
【小題3】According to the passage,rural people are not as well­dressed as urban citizens mainly because________.
A.they live far away from town 
B.they live a poorer life 
C.they are busy with their work 
D.they don't like to dress up 
【小題4】 For rural residents,the problems the urban citizens facing are________.
A.common B.unfamiliar 
C.well­known D.unimportant 

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

In Singapore,most of us love window-shopping while some others enjoy having a picnic at East Coast Park or Changi Beach on sunny days.Singaporeans are never bothered by the occasional thunderstorm.However,we know that if it rains for long continuous periods,there will be more serious effects.Just recently the main shopping street of Orchard Road was flooded and some part of Bukit Timah was impassable(不能通行的)to traffic.People reacted by writing in to the newspaper to complain about this! We forget that other countries suffer much worse effects.
Elsewhere,heavy tropical(熱帶的)storms often result in floods that ruin crops especially in Thailand and Malaysia.This in turn usually means that the price of rice and vegetables here in Singapore will rise because we import these products from them.If there is a typhoon or tsunami,thousands of lives are lost too.This happened in Indonesia and Phuket in Thailand in 2004 and It serves to remind us of how Mother Nature can cause great damage.
Weather patterns in general have changed dramatically in recent years.Scientists believe that global warming and the resulting melting of the polar ice-cap has caused the level of the ocean to rise.This in turn causes flooding of low-lying areas in countries where the land is rather flat and some parts of which is below water level.It is believed that human activities have caused Mother Nature to show her extreme anger,so it is now important that we really work together to cut down on harmful activities,for example,illegal logging(伐木)or irresponsible forest-burning to clear land for farming.
【小題1】From Paragraph 1,we can see that most Singaporeans love .

A.making complaints
B.going out for picnics
C.doing window-shopping
D.traveling along the coast
【小題2】What will happen in Singapore if there are floods in its neighboring countries?
A.Heavy tropical storms will follow shortly.
B.The price of rice and vegetables will go up.
C.Many people will write in to the newspaper.
D.More rice and vegetables will be imported.
【小題3】The underlined word“it”in Paragraph 2 refers to .
A.the arrival of heavy tropical storms
B.the import of rice and vegetables
C.the rising price of rice and vegetables
D.the loss of lives in natural disasters
【小題4】What’s the right order of the following events?
a.global warming    b.the rise in ocean level
c.harmful human activities d.the flooding of low-lying areas
e.the melting of the polar ice-cap
A.c→a→e→b→dB.a(chǎn)→c→e→b→d
C.c→a→b→e→dD.d→a→c→b→e
【小題5】What should we do in order not to make Mother Nature angry?
A.Clear more land for farming.
B.Reduce harmful human activities.
C.Bring down the price of food.
D.Improve the quality of weather.

查看答案和解析>>

同步練習冊答案