Did you get a flu shot this year? For the first time, the Centers for Disease Control and Prevention in the US is recommending that all children ages 6 months through 18 years receive the flu vaccine.
Vaccines battle diseases caused by bacteria and viruses. A weakened form of the germ is introduced into the body. The body makes special substances called antibodies to fight the germs. If the actual germs were to attack, the antibodies would fight them.
Because there are many kinds of flu viruses, scientists must create a new vaccine formula (配方) each year. Researchers must make a prediction.
“The flu vaccine is not as effective as the polio (小兒麻痹癥) vaccine or the measles(麻疹) vaccine,” says Dr. William Schaffner of Vanderbilt University School of Medicine.
“It’s not a great vaccine, but it is quite a good vaccine.”
But a flu vaccine doesn’t work for everyone. There are certain people who should be careful about taking it. Because the vaccine is produced from eggs, those who are allergic (過敏的) to eggs should not take it. If you have a fever, you should wait until you recover.
Some people are afraid that they might get the flu from the flu shot. Scientist say that it is not possible, because the viruses in the flu shot are inactivated (滅活的). But some minor side effects such as low-grade fever and body aches could occur. If they do, they begin soon after the shot and usually last only one to two days.
60. What is an antibody?
A. An antibody is a vaccine formula
B. An antibody is a germ that is introduced into the body
C. An antibody is a vaccine that fights diseases.
D. An antibody is a special substance to fight germs.
61. Which of the following statements is NOT true?
A. Not everyone is suitable for the flu vaccine.
B. The flu vaccine is not so effective as the measles vaccine
C. Flu viruses create new vaccine formulas each year.
D. People can’t take the flu vaccine at anytime.
62. It can be inferred from the text that _____.
A. scientists should change the vaccine formula each year
B. vaccines can battle diseases caused by bacteria and viruses
C. all children ages 6 months through 18 years can receive the flu vaccine
D. scientists are responsible for the side effects of the flu vaccine
63. Which of the following would be the best title for the text?
A. The flu vaccine        B. Side effects of the flu vaccine
C. How to prevent the flu  D. Not everyone can get the flu shot
60~63 DCAA        
練習(xí)冊系列答案
相關(guān)習(xí)題

科目:高中英語 來源:不詳 題型:閱讀理解


In formal paragraphs you will sometimes see a sentence at the end of the paragraph which summarizes the information that has been presented.This is the concluding sentence.The concluding sentence is similar to the topic sentence.They are both general sentences.The concluding sentence can be written in two ways:
1.State the topic sentence in different words.
2.Summarize the main points in the paragraph.
You can understand concluding sentences with this example.Consider a hamburger that you can buy at a fast—food restaurant.A hamburger has a top bun,meat,cheese,lettuce(生菜),and other elements in the middle of the hamburger,and a bottom bun.Note how the top bun and the bottom bun are very similar.The top bun,in a way,is like a topic sentence,and the bottom bun is like the concluding sentence.Both buns “hold” the meat,onions,and so on.Similarly,the topic sentence and concluding sentence “hold” the supporting sentences in the paragraph.Let’s see how a concluding sentence might look in our sample paragraph about Wheaton:
My hometown is famous for several amazing natural features.First,it is noted for the Wheaton River,which is very wide and beautiful.Also,on the other side of the town is Wheaton Hill,which is unusual because it is very steep.The third amazing feature is the Big Old Tree.This tree stands two hundred feet tall and is probably about six hundred years old.These three landmarks are truly amazing and make my hometown a famous place.
Notice how the concluding sentence,“these three landmarks are truly amazing and make my hometown a famous place”,summarizes the information in the paragraph.Notice also how the concluding sentence is similar to,but not exactly the same as,the topic sentence.
Usually,we begin a concluding sentence with “in conclusion’’ or “in summary”.Remember,not all paragraphs contain concluding sentences,especially if the paragraph is very short.However,if your paragraph is very long,it is a good idea to use a concluding sentence.
65.What does the author mainly intend to tell us in this passage?
A.How to write a concluding sentence.
B.What the top bun and the bottom bun are like.
C.Why his hometown is a famous place.
D.To use a concluding sentence in our writing.
66.Why does the author write about a hamburger?
A.Because he can buy a hamburger at a fast—food restaurant.
B.Because a hamburger has a top bun and a bottom bun.
C.Because the top bun and the bottom bun are very similar.
D.Because he wants to explain his main idea in another way.
67.The underlined word “noted” probably means“        ”
A.written down          B.famous                   C.noticed                   D.recorded
68.Which of the following statements is TRUE about the passage?
A.A sentence at the end of a paragraph is the concluding sentence.
B.All paragraphs contain concluding sentence.
C.It is a good idea to use a concluding sentence in a long paragraph.
D.The concluding sentence is the same as the to pic sentence.
69.The underlined phrase “These three landmarks” here refers to       .
A.the Wheaton River,Wheaton Hill and my hometown
B.natural features,the Wheaton River and the Wheaton Hill
C.the Wheaton River,Wheaton Hill and the Big Old Tree
D.my hometown,Wheaton Hill and the Big Old Tree

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解


Not long ago , Richard Denniston found himself suffering the same pain that millions of other pet owners have faced . His little Scottish dog had a brain tumor(腫塊)and would soon die. Like others who faced the problem before him , Denniston just wanted to end his pet’s suffering . However , he took one step further.
Deniston , an expert who studies animals , collected a tiny skin sample from the dog and took it to his laboratory at Louisiana State University. There he  cultivated  it and froze it in liquid nitrogen.
From that idea , Denniston started a new technology .Denniston’s company will save pet’s DNA $500,plus a monthly storage fee of Us $10, until cloning becomes a reality .
Thanks mostly to the contribution of a California multimillionaire , that day may not be so far off.
“It could happen extremely soon if everything went on well.”says Mark Westhusin , a professor leading a dog cloning team . Most experts put successful dog cloning a year to five years down the road . The cost is bound to be expensive at first , but it would eventually drop to a few thousand dollars.
Since Dolly , the sheep which was first cloned in 1997 ,cattle ,goats ,mice and monkeys have been cloned in labs . Pets are likely to be next.
“I really believe that the technology is going to become available for many species in the near future ,”Denniston says .
1. After his pet died ,Richard Denniston_______.
A. did something more than the ordinary pet owners
B. did as other pet owners
C. did nothing but feel very sad
D.could not help feeling lonely without his dear pet
2. Richard Denniston_________in liquid nitrogen for an experiment.
A. was a doctor who put his dog
B. was an animal expert who put a piece of his dog’s skin
C.was an expert at collecting skin samples who then put them
D.took great interest in freezing things
3. The underlined word “cultivated ”in Para . 2 probably means_________.
A. bought     B.discovered    C.caught     D.trained
4. Cloning will cost people_______.
A. a lot of money in five years .
B. much in the beginning and then be reduced to a thousand dollars.
C. much and then will surely be reduced to thousands of dollars.
D.much at first and then might be reduced to a few thousand dollars.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解


For many young people, the dream of a lifetime is to travel the world, explore different cultures and landscapes, taste new foods and flavors, and listen to the distinctive sounds of international music and languages.
Unfortunately, few young people have the money or freedom to make this dream come true. But if you can't go out into the world, surely second best is to let the world come to you. And, this year's Shanghai World Expo is exactly where that's happening.
From May 1 to October 31, there will be 194 countries and 50 international organizations on display at the 5-square-km Expo site. Seventy million domestic and international visitors are expected to visit it by the end of October. So, if you can go, you'll be surrounded by people with a wide range of backgrounds, nations, and cultures.
The Expo's theme is "Better City, Better Life". The United Nations estimates that, this year, 55 of the world's people will live in urban settings. This poses a dilemma (困境) for the world's cities: How can they accommodate such a large number of people in a sustainable (可持續(xù)的) way? Can they remain places of natural beauty and cultural importance?
Well, that's the challenge the 2010 Expo participants are confronting in a variety of ways. Japan will show off an "eco-breathing" structure to power its building with natural energy like sunlight, rainwater and wind. Germany's pavilion is named "Balancity", which is described as a "balance between innovation (創(chuàng)新) and nature, society and its individuals, work and recreation" (娛樂)
The first themed Expo was held in 1933, and since that time World Expos have featured a participatory and interactive style. The Shanghai Expo is no exception. Young people will have the opportunity to take part in forums to discuss themes like new technology, green energy and conservation.
A trip to the Expo is guaranteed to be much less expensive than a trip around the world. Still, the costs can add up. However, young people can save money by purchasing group or student tickets, which may be available at reduced rates. Many of the participating pavilions offer free samples and treats for the visitors. In addition to handing out free chocolates, the Belgian pavilion will give away a free diamond each week to a visitor who can answer questions related to Belgium.
If you're planning to head to the Shanghai Expo between May and October, don't forget to bring a camera, a notebook, and an open mind (and comfortable shoes). For nearly six months, representatives of the world are coming together to share their best and latest ideas for the future. It's sure to be a memorable experience.
From: http://www.hxen.com/englisharticle./yingyuyuedu/2010-02-09/101092.html
1. Which statement is true according to the passage?
A. You can pay a visit to the Shanghai World Expo at the beginning of this November
B. You can save money by buying student tickets.
C. Whoever comes to the Belgian pavilion will be given a free diamond.
D. How to protest the animals is the theme of the Shanghai World EXPO
2. What dilemma do you think the cities are confronting (面對) now according to the fourth paragraph?
A. How to avoid traffic jams                     B. How to reduce air pollution
C. How to live peacefully with animals          D. How to live harmoniously with nature
3. What's the purpose of the writing the passage?
A. To introduce how to get to the Shanghai World Expo
B. To recommend what to see in the Shanghai World Expo
C. To tell us some information about the Shanghai world Expo.
D. To tell us the history about the World Expo.
4. Where do you think you will probably read this article?
A. In a newspaper      B. On a website         C. In a magazine      D. In a textbook

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解


Babies are born yogis(瑜伽練習(xí)者).Once we were all able to pull our toes up by our ears and laugh about it.Then we aged, got injured, and began carrying stress in our shoulders and back.In short, we lost our balance.
Yoga(瑜伽) is an ancient practice that helps create a sense of union in body, mind, and spirit.It brings us balance.I was seriously out of balance when I started practicing yoga in 1999.I had plantar fascitis(足底筋膜炎)in both feet, and my doctor had warned me against all the things I loved to do: walking, hiking, and playing tennis.I was desperate for exercise.Yoga became my salvation and even enhanced my other fitness activities.I practice yoga at least twice a week, but I consider yoga to be part of my daily life because after a while you no longer just practice yoga—you love it.
Yoga becomes part of your physical life.Your body grows stronger, more toned, and more flexible as you move from one pose to the other.I spent a week in Mexico at a yoga retreat, and it was the first vacation on which I lost weight.“Rather than building muscle, yoga builds muscle tone,” says Shakta Kaur Khalsa, author of the K.I.S.S.Guide to Yoga.“Because yoga helps maintain a balanced metabolism (新陳代謝), it also helps to regulate weight.Additionally, yoga stretches muscles lengthwise, causing fat to be removed around the cells.” I do yoga poses throughout the day.After hours at my computer, I stretch my stiff shoulders and arms.When I need a boost of energy, I do energizing poses.When I am feeling exhausted at the end of the day, I do restorative poses.
Yoga becomes part of your mental life.Yoga teaches you to focus on breathing while you hold the poses.This attention to breath is calming; it dissolves stress and anxiety.I use yogic breathing on the tennis courts, in the dentist’s chair, and in traffic jams.You should always leave a yoga practice feeling energized, not tired.If you feel tired after yoga, it means you spent the time “fighting” yourself, trying to force yourself into poses.In yoga, you “surrender” to the pose by letting go of the tension.
Yoga becomes part of your spiritual life.Yoga is practiced by people from all religions; it is not restricted to any religious group.Yoga teaches “right” living in how we deal with ourselves and others.As I work on a difficult pose, I learn patience, forgiveness, and the value of gentleness.Yoga advocates proper eating, but you don’t have to be a vegetarian to practice yoga.
72.What would be the best title for this passage?
A.What’s Yoga?                B.How I Do Yoga Poses
C.The Benefits of Yoga          D.The Varieties of Yoga
73.According to the third paragraph, yoga can help people __________.
A.grow taller                     B.lose weight
C.become flexible in thinking           D.make more friends
74.People feel tired after yoga because __________.
A.they consume energy in practicing yoga
B.they respond well to yoga poses
C.they spend too much time on yoga       
D.they force themselves into yoga poses
75.If this passage continues, what will the writer most probably write about in the next paragraph?
A.Yoga as a means to keep fit.       
B.Different yoga poses.
C.Popularity of yoga all over the world.       
D.Encouraging people to do yoga.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解


Want to lose weight? Try eating. That’s one of the ways being developed by scientists experimenting with foods that trick the body into feeling full.
At he Institute of Food Research in Norwich, England, food expert Peter Wilde and his colleagues are developing foods that slow down the digestive system, which then sends a signal to the brain that stops appetite. “That fools you into thinking you’ve eaten far too much when you really haven’t,” said Wilde. From his studies on fat digestion, he said it should be possible to make foods, from bread to yoghurt, that make it easier to diet. While the research is still in its early stages, Wilde’s approach to controlling appetite is one that some doctors say could be a key to solving the problem of obesity.
“Being able to switch off appetite would be a big help for people having trouble losing weight,” said Steve Bloom, a professor of investigative medicine at London’s Imperial College, who is not connected to Wilde’s research. Bloom said that regulating appetite through foods is theoretically possible. But Bloom warned that controlling appetite may be very challenging. “The body has lots of things to prevent its regulatory systems from being tricked,” he said.
Wilde’s research makes use of the body’s ways of digesting fat. Fat normally gets broken down in the first part of the small intestines (腸道). When you eat a high-fat meal, however, the body can only digest the fat entirely further down in the intestines, which then causes the body to produce a kind of chemical to stop the appetite.
Wilde’s approach copies what happens with a high-fat meal. He coats fat droplets (滴) in foods with modified proteins from plants, so it takes longer for the chemical that breaks down fat to reach it. That means that the fat isn’t digested until it hits the far reaches of the intestines. At that point, intestinal cells send a signal telling the brain it’s full. Even though the body hasn’t had a high-fat meal, it stops the appetite as if it has. If the fat had been digested earlier in the intestines, no such signal would be sent.
51. According to Wilde’s research, what could people do if they want to lose weight?
A. Eat more bread and yoghurt.                    B. Trick the body by eating nothing.
C. Have foods with fat droplets coated.         D. Control their digestive system strictly.
52. The underlined word “obesity” in Para. 2 most probably means “________”.
A. being too fat                            B. eating too much food       
C. stopping appetite                D. being unhealthy
53. What can be inferred about Professor Bloom’s opinion towards Wilde’s approach?
A. It won’t work since the body’s regulatory systems will never be tricked.
B. It is sure to switch off the appetite of people with a weight problem.
C. It sounds terrible because regulating appetite through foods is not practical at all.
D. It’s no that easy to trick the body so more research should be done.
54. Which of the following is TRUE about Wilde’s approach?
A. A kind of chemical is added to make a high-fat meal less fatty.
B. Fat is digested earlier and the body sends a signal telling the brain it’s full.
C. Fat won’t get broken down in the first part of the small intestines.
D. The chemical that breaks down fat will not reach the fat.
55. The passage is written to ________.
A. give advice on how to stop eating high-fat meals
B. introduce a research on controlling appetite
C. discuss the argument between two professors
D. show different ways to trick the body

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

When it comes to intelligence, human beings are the top dogs of the animal kingdom. But in recent years, scientists have been documenting surprising intelligence and emotional depth in animals ranging from honeybees to elephants. Here are some amazing examples.
Artistic Monkey Business
Jannet Schmid, director of the Little River Zoo in Norman, Oklahoma, learned a lot about the intelligence of capuchin monkeys. She and her busband adopted a young male, named Bailey. The capuchin particularly liked taking car rides, insisting that he insert the key and ride in the front passenger’s seat.
Now Bailey has become a devoted painter. He uses brushes to create colorful, abstract paintings, and prefers not to be disturbed.
Prairie Dog Sound
Through a variety of birdlike sounds, prairie dogs warn each other of approaching creatures. They demonstrated a surprisingly complex communication system. In his 25 years of study, Slobodchikoff, a professor of biology, has recorded them pronouncing ten nouns including hawk, deer and coyote, a number of adjectives to identify color, size and shape, and even some verbs to indicate speed.
In an ongoing study, Slobodchikoff learns that their brain contains a very extensive vocabulary. He once used his best prairie dog sound to say coyote, and they just looked at him in anger as if he had said a bad word.
Ivy League Parrot
One African grey parrot Alex is said to have the cognitive abilities of a five-year-old child. Alex can identify 50 different objects, seven colors, five shapes, quantities up to six, and the concepts of bigger, smaller, same and different.
Also Alex is considered to make reasoned decisions. During an experiment, researchers gave Alex different-colored blocks in sets of two, three and six. When asked which color group had five blocks, Alex replied, “None.” And he answered the same in repeated tests. Obviously, he interpreted the concept of “none” as an absence of quantity all on his own. That’s a lot like a high school student answering questions on a quiz show.
56.Which of the following is true?
A. Bailey is as clever as a child of five.
B. The prairie dog loves taking car rides.
C. The capuchin monkey is fond of painting.
D. Alex develops a communication system.
57.The underlined word “coyote” in Paragraph 4 refers to ________.
A. a verb                     B. an animal              C. a warning                       D. an adjective
58.The African grey parrot Alex can ________.
A. answer questions on a quiz show
B. understand the figure “7”
C. identify five colors and seven shapes
D. apply the concept of “none” correctly
59.What is the passage mainly about?
A. Animal communication                           B. Animal research
C. Animal intelligence                                  D. Animal information

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解


C.
“An apple a day keeps the doctor away.” Similarly, if we drink a little more water ever day, we may find that we need to go to the doctor a lot less often. A healthy diet is made up of water and a great many different kinds of foods. We know that healthy foods like fruits, vegetables and fish, are important as they provide us with energy and fibre, without giving us too much fat and sugar. But why is water important?
The human body needs water to survive. Water is important as it carries poisons and waste out of our bodies. However, doctors advise us to drink plenty of water, much more than the small amount we need to stay alive.
Some doctors believe that water is important for our health in all kinds of ways. They believe that a great many illnesses and health problems stars as a result of dehydration—a lack(缺少) of water in the body. Most people are dehydrated (脫水)at least some of time, although they probably don’t know it. It is surprising to learn that if we feel thirsty, we are already in the first stages of dehydration. In fact, we are advised to drink water before we feel thirsty.
These doctors think that health problems such as headaches, high blood pressure and asthma could be helped if people drink more water. They also believe that drinking more water can help people who are overweight. Water contains no calories so it will not make us put on weight. If we drink water, we will probably drink less sugary soft drinks such as Coca-cola. Doctors also believe that drinking more water may stop people from overeating. They say that many people think that they are hungry when they are, in fact, thirsty. Doctors suggest, therefore, that we eat less food and drink more water.
There are still many health problems that cannot be solved by drinking water, so we should not stop going to seeing the doctor completely. However, if we make a decision to drink water every day, we may find that we need to go to the doctor a lot less often.
63. We need _____for a healthy diet.
A. fibre        B. food       C. water    D. Water and different foods
64. From the text, we know water can carry_________.
A.energy and fibre in our bodies     
B.fruit, vegetables and fish in our bodies
C.sugar and fat out of our bodies
D.poisons and waste out of our bodies
65. Lack of water caused people to put on weight too much because_______.
A.they think they are hungry and eat too much
B.they think they are thirsty and eat less
C.water has no calories
D.it makes them hungry
66. Which of the following isn’t mentioned in the passage?
A.Fruit provides us with energy and fibre.
B.Some healthy problems start because of a lack of water.
C.Drinking more water may stop people from overeating.
D.The amount of water a person should drink in a day.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解


E
Some recent reports on the death penalty have brought some interesting responses from
readers all over the country. Although I really don’t like to make fun of people who oppose the
death penalty because they are so sincere, I wish they would come up with some new arguments to
replace the worn-out ones.
For example, many said something like this : “Wouldn’t it be better to keep the killers alive so
psychiatrists(精神科醫(yī)生)can study them in order to find out what makes them the way they are?”
It takes the average psychiatrist about five years to figure why a guy wants to stop for two drinks after work and won’t quit smoking. So how long do you think it will take him to determine why somebody with an IQ of 92 decided to murder the little old lady who lives next door? Besides, we have a huge number of killers in our prisons—more than enough to keep all the nation’s psychiatrists busy for the next 20 years.
Another standard is: “The purpose of the law should be to protect society, not to give cruel punishment, such as the death penalty.”
In that case ,we should tear down all the prisons and let all the criminals go because most people would consider a long period in prison to be cruel punishment--especially those who are locked up. Even 30 days in the Cook County Prison is no picnic.
And: “What gives society the right to take a life if an individual can’t?” The individuals who make up society give it that right. Societies perform many functions that individuals can’t. We can’t carry guns and shoot people, but we give that right to police.
Words can not explain the suffering the families of murder victim are left to live with. The families suffer a terrible loss, and they live with terrible memories. The knowledge that the killers are alive and will probably remain alive and cared for you by society is extremely painful. Probably, people who oppose the death penalty should try explaining to these people how cruel it is to kill someone.
72.What’s the writer’s attitude towards death penalty?
A.Death penalty is a must.
B.Death penalty doesn’t solve all the problems.
C.Death penalty should be practiced more carefully.
D.Death penalty should only be used on murderers.
73.How many arguments against death penalty are discussed in the passage?
A.Two  B.Three       C.Four  D.Five
74.What does the last sentence of the text suggest?
A.It’s cruel to use death penalty to kill someone.
B.Murder victims need more comfort from the society.
C.Opponents of death penalty should offer explanations.
D.Murderers should be put to death as the punishment.
75.The author develops the passage by         .
A.providing typical examples of death penalty
B.following the natural time order
C.presenting and analyzing ideas
D.comparing opinions from different fields

查看答案和解析>>

同步練習(xí)冊答案