Let's face it．No one drinks diet soda for the taste．People drink diet soda in the hope that it will help them lose weight or at least keep them from gaining it．Yet it seems to have exactly the opposite effect, according to a new study．
Researchers from the University of Texas said those who drank two or more diet sodas a day had waist size increases that were six times greater than those who didn't drink diet soda．"What we saw was that the more diet sodas a person drank, the more weight they were likely to gain," said Sharon Fowler．
The study was based on data from 474 participants in a large, ongoing research project, where the participants were followed for nearly l0 years．
While the findings are surprising, they also offer some explanations．
Nutrition expert, Melanie Rogers, who works with overweight patients in New York, has found that when patients are switched from regular to diet soda, they don't lose weight at all．"We weren't seeing weight loss necessarily, and that was confusing to us," said Rogers．
So why would diet soda cause weight gain? No one knows for sure yet, but it could be that people think they can eat more if they drink diet soda, and so over-compensate for the missing calories．
A related study found some sweeteners （甜味劑） raised blood sugar levels in some mice．"Data from this and other potential studies suggest that the promotion of diet sodas and artificial sweeteners may be risky," said Helen P．Hazuda, professor at the University of Texas's school of medicine．"They may be free of calories, but not of consequences．"
小題1:People drink diet soda to _____．
A．enjoy its tasteB．a(chǎn)chieve weight loss
C．stay in fashionD．gain more energy
小題2:The new study suggests that drinking diet soda _____．
A．causes people to become heavierB．helps people to be healthier
C．makes people much thinnerD．offers people more calories
小題3:We can learn from the passage that _____．
A．regular soda makes people lose more weight
B．diet soda does help reduce calories
C．diet soda drinkers tend to eat more food
D．most blood diseases come from diet soda
小題4:The underlined word "They" in the last paragraph probably refers to _____．
A．sweeteners
B．diet soda drinkers and sweetener takers
C．sodas
D．diet sodas and artificial sweeteners

小題1:B
小題2:A
小題3:C
小題4:D
文章講述了喝蘇打水不能讓人減肥，反而可能讓人更胖，并分析了原因。
小題1:細(xì)節(jié)題。根據(jù)第一段People drink diet soda in the hope that it will help them lose weight or at least keep them from gaining it．
小題2:細(xì)節(jié)題。根據(jù)第二段第三行the more diet sodas a person drank, the more weight they were likely to gain,
小題3:細(xì)節(jié)題。根據(jù)文章倒數(shù)第二段it could be that people think they can eat more if they drink diet soda, and so over-compensate for the missing calories．
小題4:猜測(cè)詞義題。根據(jù)文章最后一段可知They 指代前面的提及的diet sodas and artificial sweeteners。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：不詳 題型：完形填空

All children in the United States have to receive an education, but not all children go to school. A number of parents　　36　not to send their children to school. Such children are known　　37　　 “home-schoolers”. Some parents prefer teaching their children at home　　38 they do not believe schools teach the correct religious (宗教的)　　39 ; others believe they can provide a better educational　　40 for their children by doing so.　　41 , results show home-schooled children often do better than 　　42 on national tests in reading and math.
　　David teaches his three children at home. He 　　43　that his children learn very differently from children in school. Learning starts with the children’s　　44　and questions. For example, when there is snowfall on a winter day, it may　　45　a discussion about climate, snow removal 　　46 , Alaska, etc. Or a spring evening when the family is out　47　the stars is a good time to ask questions about the sky. If the Brazilian rain forests are on TV, it　48　　be a perfect time to talk about how rain forests influence the climate, how deserts are　49　　and how the polar ice caps　50 ocean levels.
　Home schooling is often more interesting than　　51　schools, but critics (批評(píng)家) say home-schoolers might be uncomfortable　　52　 with other people in adult life. Critics also say that most parents are not　53　to teach their children. However, most parents don’t have the time or the　　54　to teach their children at home, so schools will continue to be　　55　　most children get their formal education.
小題1:
A．considerB．prefer　　　　C．provideD．suggest
小題2:
A．for　　　　B．toC．a(chǎn)s　　　　　　D．in
小題3:
A．because　　B．forC．thoughD．while
小題4:
A．a(chǎn)ctivitiesB．usesC．thoughtsD．values
小題5:
A．experienceB．knowledgeC．behaviorD．way
小題6:
A．SadlyB．ActuallyC．UnbelievablyD．Happily
小題7:
A．normalB．ordinaryC．common　　　　　D．a(chǎn)verage
小題8:
A．believesB．saysC．offers　　　　　　D．imagines
小題9:
A．interestsB．discussionC．needsD．hobbies
小題10:
A．carryB．openC．lead　　　　　　D．start
小題11:
A．furnitureB．equipmentC．toolD．maker
小題12:
A．seeingB．lookingC．watchingD．noticing
小題13:
A．needB．mustC．oughtD．could
小題14:
A．a(chǎn)ppearedB．formedC．inventedD．built
小題15:
A．a(chǎn)ffectB．decideC．makeD．determine
小題16:
A．outsideB．expensiveC．informalD．regular
小題17:
A．livingB．matchingC．mixingD．connecting
小題18:
A．fit　　　　B．a(chǎn)daptedC．a(chǎn)vailableD．good
小題19:
A．moneyB．desireC．hopeD．demand
小題20:
A．whyB．howC．whenD．where

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


For those who are tired doing the laundry, Samsung has found an answer: a washing machine that can tell you when your laundry is done via a smartphone app(application).
Strange though it may seem — “my wife already does that” was a common response among attendees viewing the device when it was introduced at the Consumer Electronics Show (CES) this week — Samsung is just one of many appliance makers racing to install (安裝) a large number of internet-connected features in machines in an effort to make them “smart”.
Last year, it was a refrigerator that tweeted. This year, it’s Wi-Fi-enabled laundry machines and fridges that can tell you when your groceries are going bad.
The washers and dryers, available starting in the spring, connect to any smartphone through a downloadable application. The phone can then be used as a remote control, so the machines can be turned on and off while their owners is at work or on the bus.
Samsung says it’s not just something new — the app connection actually has some practical uses.
“If you started to dry clothes in the morning and forgot to take them out, you can go to your phone and restart your dryer for the time when come home, so your clothes are refreshed and ready to go,” said spokesperson Amy Schmidt.
The company also says that with electricity rate(電價(jià))varying depending on the time of day, more control over when the machines are used can help save money.
Perhaps, but what they will probably really accomplish is what all good technologies do —enable laziness. Rather than getting up to check on whether the laundry is done, users will instead monitor it on their phones while watching TV.
小題1:What can be inferred from the common response of the attendees at the CES?
A．The machine will be a big success.
B．their wives like doing the laundry.
C．The machine is unrelated to their life.
D．This kind of technology is familiar to them.
小題2:What can we learn about the new laundry machines?
A．They can tell you when your clothes need washing
B．They can be controlled with a smartphone
C．They are difficult to operate
D．They are sold at a low price
小題3:We can conclude form Samsung’s statements that ___________.
A．the app connection makes life easier
B．it is better to dry clothes in the morning
C．smartphone can shorten the drying time
D．we should refresh clothes back at home
小題4:What is the main idea of the last paragraph?
A．The laundry should be frequently checked
B．Lazy people like using such machines
C．Good technologies also cause problems
D．Television may help do the laundry.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


Surprisingly, no one knows how many children receive education in English hospitals, still less the content or quality of that education. Proper records are just not kept. We know that more than 850,000 children go through hospital each year, and that every child of school age has a legal right to continue to receive education while in hospital. We also know there is only one hospital teacher to every 1,000 children in hospital.
Little wonder the latest survey concludes that the extent and type of hospital teaching available differ a great deal across the country. It is found that half the hospitals in England which admit children have no teacher. A further quarter have only a part-time teacher. The special children’s hospitals in major cities do best; general hospitals in the country and holiday areas are worst off. From this survey, one can estimate that fewer than one in five children have some contact with a hospital teacher—and that contact may be as little as two hours a day. Most children interviewed were surprised to find a teacher in hospital at all. They had not been prepared for it by parents or their own school. If there was a teacher they were much more likely to read books and do math or number work; without a teacher they would only play games.
Reasons for hospital teaching range from preventing a child falling behind and maintaining the habit of school to keeping a child occupied, and the latter is often all the teacher can do. The position and influence of many teachers was summed up when parents referred to them as “the library lady” or just “the helper”. Children tend to rely on concerned school friends to keep in touch with school work. Several parents spoke of requests for work being ignored or refused by the school. Once back at school children rarely get extra teaching, and are told to catch up as best they can.
Many short-stay child-patients catch up quickly. But schools do very little to ease the anxiety about falling behind expressed by many of the children interviewed.
小題1:Which of the following statements is true?
A．Every child in hospital receives some teaching.
B．Not enough is known about hospital teaching.
C．Hospital teaching is of poor quality.
D．The special children's hospitals are worst off.
小題2:It can be inferred from the latest survey that________.
A．hospital teaching across the country is similar
B．each hospital has at least one part-time teacher
C．a(chǎn)ll hospitals surveyed offer education to children
D．only one-fourth of the hospital have full-time teacher
小題3:The hospital teachers are found________.
A．not welcomed by the children and their parentsB．unnecessary
C．not quite helpfulD．capable
小題4:In order to catch up with their school work, children in hospital usually turn to________.
A．hospital teachersB．schoolmatesC．parents D．school teachers
小題5:We can conclude from the passage that the author is________.
A．unfavorable towards children receiving education in hospitals
B．in favor of the present state of teaching in hospitals
C．unsatisfied with the present state of hospital teaching
D．satisfied with the results of the latest survey

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


Have you ever suddenly felt that someone you knew was in trouble—and was he? Have you ever dreamed something that came true later? Maybe you have ESP (超感覺(jué)知覺(jué)).
ESP stands for Extra Sensory Perception. It may be called a sixth sense. It seems to let people know about events before they happen, or events that are happening some distance away.
Here's an example. A woman was ironing clothes. Suddenly she screamed, "My father is dead! I saw him sitting in the chair!" Just then, a telegram came. The woman's father died of a heart attack. He died sitting in a chair.
There are thousands of stories like this one on record. Scientists are studying them to find out what's behind these strange mental messages. Here's another example—one of hundreds of dreams that have come true:
A man dreamed he was walking along a road when a horse and carriage came by. The driver said, "There's room for one more." The man felt the driver seemed dead, so he ran away. The next day, when the man was getting on a crowded bus, the bus driver said, "There's room for one more."
Then the man saw that the driver's face was the same face he had seen in the dream. He wouldn't get on the bus. As the bus drove off, it crashed and burst into flames. Everyone was killed!
Some people say stories like these are coincidences. Others, including some scientists, say that ESP is real. From studies of ESP, we may someday learn more about the human mind.
小題1:According to the passage, the author believes that the sixth sense is_________.
A．in existenceB．imaginativeC．not real D．impossible
小題2:By studying ESP, scientists may get to_________.
A．learn how people tell lies
B．know more about human dreams
C．know more about human mind
D．learn how strange things happen
小題3:In the last paragraph the underlined word "coincidences" probably means ____.
A．things that may not happen
B．things that happen in a dream
C．things that must happen
D．things that happen by accident
小題4:This article is mainly about_________.
A．the human dream B．the sixth sense
C．the human mind D．a(chǎn) crowded bus

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


Enter a typical high school, and the first thing you see is the front office， where the principal dwells and grades are stored. The front office also reinforces familiar hierarchy(等級(jí)制度): principal at the top, teachers in the middle, kids on the bottom, sitting with hands folded at their desks.
Now, imagine a school where the organizational structure is completely flat. At the New Country School in Henderson, Minn, there is no front office. Visitors are immediately embraced by an airy atrium that is the centerpiece of this one-room schoolhouse. And all around the room, 124 students sit at desks — real office desks — working at their own personal computers on their own projects.
When Dee Thomas and her colleagues got together 15 years ago to design a new high school, they knew there was one thing that had to go: The bell. "You don't go into your job in the morning and say, 'OK, for the first 45 minutes of my job, I'm going to do the math part.' And then a bell goes off, and you do the social history part of your job. You don't do that," Thomas said.
There are no teachers at New Country. Every few weeks, students must present projects they've been working on to the rest of the school community. To prepare for their presentations, they gather at tables in the middle of the school atrium and present their work to their "advisers."
Kids at New Country test better than their peers on the state tests and on the pre-college ACT. The school sends 90 percent of its graduates to college. But that doesn't tell the whole story. New Country struggles to keep its seniors from leaving. The school's senior project is demanding — 300 hours of work.
But for some students, New Country offers a rare alternative, a choice they can't find anywhere else. And the school is constantly visited by educators from around the world looking for new ideas. That's the foundation of efforts to reform American high schools today — that there's a need to experiment with an institution that is failing millions of students
小題1:The author mentioned the typical high school in the first paragraph ___________.
A. to tell us what the typical high school is like in USA.
B. to present a sharp contrast with the experimental school, New Country.
C. to introduce the topic, New Country, of the passage.
D. to call on students to register in the typical high school
小題2:The following statements about New Country are all true except________.
A．New Country students sit in an open environment that looks a lot like a typical
office.
B．Students consult with "advisers", who "teach" in the traditional sense.
C．No bells in New Country, students choose how to spend their time.
D．No traditional classes, students work on projects they select themselves.
小題3:Compared with typical high school, New Country is well received for its_________.
A．high test scoresB．a(chǎn)lternative
C．comfortable conditionsD．teaching methods
小題4:The passage mainly tells us __________.
A．experimental school gets rid of classes and teachers.
B．typical high school and experimental School.
C．new schools in future in America.
D．education reform in America.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


Hello, you guys! Do you want to make e-pals via the Internet and have fun? Here’s some advice for you to follow. First take a look at www. Spoton. Community. Click on international pen-pal sites to find some of our favorite international e-pal and pen-pal web sites. Don’t forget: some e-pal services cost money and some are safer than others. Remember to read a web site safety warning before you join!
KidFu （www. Kidfu. com）says it is the safest place online for kids to chat, play games and make friends. Get your parents to help you register and then you can write things about yourself or read what other kids have written. There’re also chat monitors that make sure that the online chat rooms are safe and friendly. KidFu costs money, but the first month is free.
If you join e-PALS （www. Epals. com), you can choose a pen-pal from over 65,000 kids from 191 countries. You can also find information about how teachers can get pen-pals for their pupils. Or if you want to start sending e-mails right now, go to Europe Pages（www. europa-page. com）. Lots of young people have written their names, interests, home countries and their e-mail addresses. Just click on a name and start writing!
Well, however, there are tips that you should keep in mind: never be absorbed in the line for too long, so stay there not more than 2 hours once. Never go out with your pals without your parents’ permissions. Let your parents know about what you are doing. Then, have fun!
小題1:If you want to choose a safer web site, you'd better click on           .
A． www. europa-page. ComB．www. Spoton. de
C．www. e-pals. com D．www. Kidfu. com
小題2:A teacher can visit            to help his/her pupils to get pen-pals.
A．KidFuB．Europe PagesC．e-PALSD．spoton. community
小題3:The advantage of Europe Pages is that           .
A．you can start sending your e-mails immediately
B．you can choose more pen-pals from many countries
C．it is free and you can find names of different countries
D．it is the safest one among all the web sites
小題4:A chat monitor mentioned in Paragraph 2 is probably           .
A．a(chǎn) person in the web site to give safe online advice
B．a(chǎn) police officer to keep order in the chat rooms
C．a(chǎn)n engineer in charge of controlling the chat
D．a(chǎn) software to keep online chatting clean and safe

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


Every heard the old saying, “An apple a day keeps the doctor away”? It is true! Apples have a lot of nutritional value!
A medium sized apple has only 80 calories (卡). What a great snack choice! Not only is an apple low in calories, they contain absolutely no fat. Thus, eating apples as snacks, as opposed to chips or cakes, will help reduce the risk of cancer.
On top of reducing the risk of cancer, the low sodium (鈉) amounts in apples also help reduce high blood pressure and heart disease. They are cholesterol (膽固醇) free. They are also rich in vitamin A, which helps strengthen vision (視力) along with bone and tooth development.
Now that we know the nutritional facts, let’s take a look at some of the fun facts—That’s right! Apples can be fun, as well as healthy!
If an apple is fresh, it will float on water. Twenty-five percent of an apple is air, thus allowing it to float. Can you imagine bobbing (上下浮動(dòng)) for apples that sink?
And, did you know that an apple is covered with a natural layer of wax (蠟)? That’s what the peeling (剝下的皮) is. It protects the apple’s high water content, keeping the apple fresh.
Apples are a very important part of a healthy diet, but keep in mind they can be fun. And always remember, if an apple sinks in water, pick another one to bob for!
小題1:How many kinds of facts about apples are mentioned in the passage?
A．Two. B．Three.C．Four. D．Five.
小題2:Apples contain no _________.
A．calories and sodiumB．fat and sodium
C．fat and cholesterolD．cholesterol and sodium
小題3:We learn that an apple is probably _________ if it sinks in water.
A．too high in water contentB．still green
C．sweet and rich in vitaminsD．unsuitable to eat
小題4:Why do apples stay fresh for a long time?
A．Because they contain much water.
B．Because they have peeling with a layer of wax.
C．Because they contain much air.
D．Because they have peeling with nutritional value.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

Ideas about polite behavior are different from one culture to another. Some societies, such as America and Australia, for example, are mobile and very open. People here change jobs and move houses quite often. As a result, they have a lot of relationships that often last only a short time, and they need to get to know people quickly. So it’s normal to have friendly conversations with people that they have just met, and you can talk about things that other cultures would regard as personal.
On the other hand, there are more crowded and less mobile societies where long–term relationships are more important. A Malaysian or Mexican business person, for example, will want to get to know you very well before he or she feels happy to start business. But when you do get to know each other, the relationship becomes much deeper than it would in a mobile society.
To Americans, both Europeans and Asians seem cool and formal at first. On the other hand, as a passenger from a less mobile society puts it, it’s no fun spending several hours next to a stranger who wants to tell you all about his or her life and asks you all sorts of questions that you don’t want to answer.
Cross-cultural differences aren’t just a problem for travelers, but also for the flights that carry them. All flights want to provide the best service, but ideas about good service are different from place to place. This can be seen most clearly in the way that problems are dealt with.
Some societies have “universalist” cultures. These societies strongly respect rules, and they treat every person and situation in basically the same way. “Particularist” societies, on the other hand, also have rules, but they are less important than the society’s unwritten ideas about what is right or wrong for a particular situation or a particular person. So the normal rules are changed to fit the needs of the situation or the importance of the person.
This difference can cause problems. A traveler from a particularist society, India, is checking in for a flight in Germany, a country which has a universalist culture. The Indian traveler has too much luggage, but he explains that he has been away from home for a long time and the suitcases are full of presents for his family. He expects that the check–in official will understand his problem and will change the rules for him. The check–in official explains that if he was allowed to have too much luggage, it wouldn’t be fair to the other passengers. But the traveler thinks this is unfair, because the other passengers don’t have his problem.
小題1:Often moving from one place to another makes people like Americans and Australians ______.
A．like traveling better　
B．easy to communicate with　
C．difficult to make real friends
D．have a long–term relationship with their neighbors
小題2: People like Malaysians prefer to associate with those ______.
A．who will tell them everything of their own
B．who want to do business with them
C．they know quite well
D．who are good at talking
小題3:Which of the following is true about “particularist societies”?
A．There is no rule for people to obey.
B．People obey the society’s rules completely.
C．No one obeys the society’s rules though they have.
D．The society’s rules can be changed with different persons or situations.
小題4: The writer of the passage thinks that the Indian and the German have different ideas about rules because of different ______.
A．interestsB．habits and customsC．culturesD．ways of life

查看答案和解析>>

同步練習(xí)冊(cè)答案