欧美日韩黄网欧美日韩日B片|二区无码视频网站|欧美AAAA小视频|久久99爱视频播放|日本久久成人免费视频|性交黄色毛片特黄色性交毛片|91久久伊人日韩插穴|国产三级A片电影网站|亚州无码成人激情视频|国产又黄又粗又猛又爽的

相關(guān)習(xí)題
 0  89776  89784  89790  89794  89800  89802  89806  89812  89814  89820  89826  89830  89832  89836  89842  89844  89850  89854  89856  89860  89862  89866  89868  89870  89871  89872  89874  89875  89876  89878  89880  89884  89886  89890  89892  89896  89902  89904  89910  89914  89916  89920  89926  89932  89934  89940  89944  89946  89952  89956  89962  89970  151629 

科目: 來源: 題型:閱讀理解

Imagine you are doing this reading in this text on the computer; what else are you doing? Maybe you’re eating a sandwich or drinking a cup of Starbucks. Should you eat while reading?
There aren’t many believable numbers, but we do know the number of people who eat while sitting in front of some type of screen is growing. A recent study found that 33 percent of families always have the TV on during meal times and another 27 percent people have it on at least half the time. Another 10 percent may be texting, emailing or talking on a cell phone while eating.
Any type of these behaviors is bad, considering the following evidence:
A Canadian study found that children who watch more than three hours of cartoons a day are 50 percent more likely to be fat than children who watch fewer than two hours. The researchers concluded that more than 60 percent of overweight incidents can be connected with screen watching too much.
A three-week study found that adults who usually play with smartphones less burned 119 more calories per day.
One Chicago researcher found that people eat more potato chips while reading online than when they have the laptop turned off.
There has been very little investigation(調(diào)查) into eating with your eyes staring at a screen or reading a book, but it is likely that his mindless eating is related to weight gain. Simply speaking, your brain has no idea what is going on with your mouth because it is occupied by other things. You don’t notice how full your stomach is, and you often don’t even notice the taste or the act of chewing and swallowing, as a result of which, developing an adapted dietary habit is a must.
【小題1】The author answers the question raised in the first paragraph with ________.

A.stories and explanations 
B.examples and investigations 
C.a(chǎn)n argument and evidence 
D.facts and descriptions 
【小題2】Which of the following statement is true?
A.Being focused while eating is a good way to have a good figure. 
B.Adults’ weight is not affected by their eating habits. 
C.There exist many investigations into eating while reading. 
D.This text must be found on a website. 
【小題3】What can be the best title of this passage? 
A.How Should You Lose Weight? 
B.Should You Do Other Things While Eating? 
C.Healthy and Unhealthy Eating Habits 
D.TV and Eating 
【小題4】What will the author probably continue to write?
A.Express healthy eating ways. 
B.Give more useful investigations into eating.  
C.Describe the study about the old who watch less TV while eating.  
D.Tell the proper ways to watch TV. 

查看答案和解析>>

科目: 來源: 題型:閱讀理解

Imagine you are doing this reading in this text on the computer; what else are you doing? Maybe you’re eating a sandwich or drinking a cup of Starbucks. Should you eat while reading?
There aren’t many believable numbers, but we do know the number of people who eat while sitting in front of some type of screen is growing. A recent study found that 33 percent of families always have the TV on during meal times and another 27 percent people have it on at least half the time. Another 10 percent may be texting, emailing or talking on a cell phone while eating.
Any type of these behaviors is bad, considering the following evidence:
A Canadian study found that children who watch more than three hours of cartoons a day are 50 percent more likely to be fat than children who watch fewer than two hours. The researchers concluded that more than 60 percent of overweight incidents can be connected with screen watching too much.
A three-week study found that adults who usually play with smartphones less burned 119 more calories per day.
One Chicago researcher found that people eat more potato chips while reading online than when they have the laptop turned off.
There has been very little investigation(調(diào)查) into eating with your eyes staring at a screen or reading a book, but it is likely that his mindless eating is related to weight gain. Simply speaking, your brain has no idea what is going on with your mouth because it is occupied by other things. You don’t notice how full your stomach is, and you often don’t even notice the taste or the act of chewing and swallowing, as a result of which, developing an adapted dietary habit is a must.
【小題1】The author answers the question raised in the first paragraph with ________.

A.stories and explanationsB.examples and investigations
C.a(chǎn)n argument and evidenceD.facts and descriptions
【小題2】Which of the following statement is true?
A.Being focused while eating is a good way to have a good figure.
B.Adults’ weight is not affected by their eating habits.
C.There exist many investigations into eating while reading.
D.This text must be found on a website.
【小題3】What can be the best title of this passage? 
A.How Should You Lose Weight?
B.Should You Do Other Things While Eating?
C.Healthy and Unhealthy Eating Habits
D.TV and Eating
【小題4】What will the author probably continue to write?
A.Express healthy eating ways.
B.Give more useful investigations into eating.
C.Describe the study about the old who watch less TV while eating.
D.Tell the proper ways to watch TV.

查看答案和解析>>

科目: 來源: 題型:閱讀理解

Christian Eijkman, a Dutch doctor, left the Netherlands for the island of Java. Many people on the island had a disease called beri-beri. He was going there to try and find a cure.
At first, Eijkman thought some kind of germ (細菌) caused beri-beri. He raised some chickens. He didn’t eat them, but made experiments on them. The local people were quite surprised at that. One day he noticed that his chickens became sick when they were fed the food most Javanese ate — refined white rice (精煉米). When he fed them with unrefined rice, also known as brown rice, they recovered. Eijkman realized that he had made an important discovery — that some things in food could prevent disease. These things were named vitamins (維生素). The Javanese were not getting enough vitamins because they had actually removed the part that contains vitamins. Later, other diseases were also found to be caused by the lack of vitamins in a person’s food.
Today many people know the importance of vitamins and they make sure they have enough vitamins from the food they eat. If they don’t, they can also take vitamin pills.
【小題1】The underlined word “cure” in Paragraph 1 probably means ______.

A.a(chǎn) medical treatment B.a(chǎn) kind of vitamin C.a(chǎn) kind of germ D.a(chǎn) kind of rice
【小題2】Christian Eijkman went to the island of Java to ______.
A.spend his holiday
B.find ways to grow better crops
C.do some research about the island
D.help the Javanese with their illness
【小題3】Why did Christian Eijkman raise some chickens?
A.To eat them.
B.To carry out his experiments.
C.To give the Javanese a surprise.
D.To make money by selling them.
【小題4】If a person doesn’t get enough vitamins in his diet, he’d better ______.
A.eat more rice B.eat more meat C.eat some chicken D.eat vitamin pills
【小題5】We can learn from the passage that ______.
A.beri-beri was caused by chickens
B.the Javanese didn’t like vitamins
C.Christian Eijkman’s experiment was successful
D.the Javanese’s disease was caused by a kind of germ

查看答案和解析>>

科目: 來源: 題型:閱讀理解

When we see well, we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.
People who are near-sighted can only see things that are very close to their eyes. Everything else seems unclear. Many people who do a lot of work, such as writing, reading and sewing become near-sighted.
Then people who are far-sighted endure just the opposite problem. They can see things that are far away, but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading, they must get glasses, too.
Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism(散光). This, too, can be corrected by glasses. Some people’s eyes become cloudy because of cataracts(白內(nèi)障). Long ago these people often became blind. Now however, it is possible to operate on the cataracts and remove then.
Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle(角度). To prove this to yourself, look at an object out of one eye; then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.
【小題1】We should take good care of our eyes       .

A.only when we can see well
B.only when we cannot see perfectly
C.only when we are near-sighted or far-sighted
D.even if we can see well or perfectly
【小題2】When things far away seem unclear, one is probably       .
A.near-sighted B.far-sighted C.a(chǎn)stigmatic D.suffering from cataracts
【小題3】The underlined word endure in the third paragraph probably means      .
A.experience B.imagine C.suffer from D.recover from
【小題4】Having two eyes instead of one is particularly useful for       .
A.seeing at night B.seeing objects far away
C.looking over a wide area D.judging distances
【小題5】People who suffer from astigmatism have     .
A.one eye bigger than the other
B.eyes that are not exactly the right shape
C.a(chǎn) difficulty that can be corrected by an operation
D.a(chǎn)n eye difficult that cannot be corrected by glasses.

查看答案和解析>>

科目: 來源: 題型:閱讀理解

We humans love to scare ourselves. Newspapers and TV news are full of shock-horror stories about the killer flu virus(流感病毒)but are there things we can do to cut our risk of catching it?
Every year, people in Britain catch the flu virus and some of those who are already ill, or are very young, may die. It is very sad, but modern treatment means that many deaths can be avoided.
Experts tell us that the world is another flu epidemic(流行)and that the latest bird-flu virus would be the most likely cause. Humans can catch the disease only after closely contacting with a sick bird. However, if someone who had normal flu was to come into contact with bird flu, this could be very dangerous. The bird flu virus could attach(附在)itself to the human flu virus, mutate and then start to spread from person to person.
Coughs and sneezes(打噴嚏)always have spread diseases, especially colds and flu, and they still do. If bird flu does begin to infect humans, it will spread through coughs and sneezes.
If you want to stay free of flu and someone coughs or sneezes at you, what should you do?
First, keep your hands away from your face and wash them and your face as soon as you can. If a cough or a sneeze spray misses your face and you accidentally touch a droplet with your hands and then touch your face, the flu or cold bug could creep into your system.
【小題1】The chances of most people catching bird flu are very small because __________.

A.they are strong enough to resist the infection 
B.only after closely contacting a sick bird can they be infected 
C.bird flu does not happen very often in the world 
D.only those who are ill can be infected 
【小題2】In the passage the underlined word “mutate” probably means“__________”.
A.differ B.produce C.increase  D.change 
【小題3】If a man with common flu is infected with bird flu, __________.
A.there must be no cure for him 
B.the disease will spread among humans 
C.he must feel cold 
D.he is likely to die 
【小題4】Which of the following statements is true according to the passage?
A.Bird flu is the most dangerous disease. 
B.Normal flu can be easily changed into Bird flu. 
C.We don’t need to worry about flu virus.  
D.The person who has normal flu and comes into contact with bird flu can easily get Bird flu. 
【小題5】The last paragraph of the passage tells us __________.
A.the reason why people with flu often cough 
B.coughs and sneezes are very dangerous 
C.how to protect ourselves from being infected 
D.how to avoid coughs and sneezes 

查看答案和解析>>

科目: 來源: 題型:閱讀理解

Gene technology to benefit people
Among all the fast growing science and technology, the research of human genes, or biological engineering as people call it, is drawing more and more attention now. Sometimes it is a hot topic talked about by people.
The greatest thing that gene technology can do is to cure serious diseases that doctors at present can almost do nothing with, such as cancer and heart disease. Every year, millions of people are murdered by these two killers. And to date, doctors have not found an effective way to cure them. But if the gene technology is applied, not only can these two diseases be cured completely, bringing happiness and more living days to the patients, but also the great amount of money people spend on curing their diseases can be saved, therefore it benefits the economy as well. In addition, human life can be longer.
Gene technology can help people to give birth to more healthy and clever children. Some families, with the English imperial family being a good example, have hereditary (遺傳的) diseases. This means their children will for sure have the family disease, which is a great trouble for these families. In the past, doctors could do nothing with hereditary diseases. But gene technology can solve this problem perfectly. The scientists just need to find the wrong gene and correct it, and a healthy child will be born.
Some people are worrying that the gene research can be used to make human beings in large quantities. In the past few years, scientists have succeeded in cloning babies will not come out in large quantities, for most couples in the world can have babies in very normal way. Of course, the governments must take care to control gene technology.
【小題1】What does “these two killers” in the second paragraph refer to?

A.Gene technology and another treatment of the two diseases.
B.The two murderers who killed the cloned baby.
C.Hereditary disease and cancer.
D.Cancer and heart disease.
【小題2】In what way can gene technology help to treat hereditary diseases?
A.Using gene technology, a scientist finds the wrong gene and corrects it.
B.Using gene technology, people with hereditary diseases can live longer.
C.Using gene technology, human babies can also be cloned.
D.Doctors can cure cancer and heart disease with the help of gene technology.
【小題3】What is the main purpose of writing the text?
A.Explaining that gene technology will also do great harm to human race.
B.Telling the readers the positive effects gene technology has on people’s life.
C.Expressing the writer’s idea that gene technology will benefit people.
D.Informing people that gene technology helps clone babies in large quantities.

查看答案和解析>>

科目: 來源: 題型:閱讀理解

Eat nuts, live longer.  Researchers have found that those who eat a handful of peanuts every day significantly decrease their risk of dying from all causes compared to those who do not eat nuts. A new study concludes that all types of nuts seem to be protective.
Researcher Ying Bao is with the Department of Medicine at Brigham and Women’s Hospital and Harvard University Medical School in Boston, Massachusetts. She and her colleagues looked at the impact of nut consumption by analyzing two huge studies that began in 1980 - the Nurses’ Health Study, which tracks the well-being of more than 76,000 women, and 42,000 men enrolled in the Health Professionals Follow-up Study.
Among the questions asked at the beginning of the studies was, 'how frequently do you eat nuts?'  The information was updated every two to four years. Bao says the participants were followed for three decades.
“What we observed is that people who eat more nuts are less likely to die over the next 30 years," said Bao. "So, for example, if a person eat(s) nuts once per day, that person has a 20 percent lower risk of dying.”
Bao says eating a handful of nuts five or more times per week was associated with a 29 percent reduced risk of dying from heart disease and an 11 percent lower risk of cancer death.  A serving size is 28 grams.
Nuts contain nutrients, including high quality proteins, vitamins and minerals, all of which have anti-cancer effects and may help protect the heart.
Bao says researchers are planning studies to find out how nuts are beneficial to human health.
The study on the health benefits of nuts was funded by the International Tree Nut Council Research and Education Foundation.
【小題1】People who often eat nuts ________.

A.a(chǎn)re more likely to live longer than people who often eat fruits
B.don’t need to go to hospital
C.may live longer than people who don’t eat nuts
D.don’t have to do sports
【小題2】The underlined word “well-being” in Paragraph 2 shares the same meaning as “________”.
A.illness B.health C.diet D.habit
【小題3】About Bao’s research, which statement is true?
A.She has done the research by herself.
B.Her research was based on two studies.
C.Her research lasted about three years.
D.People should eat all kinds of nuts every day.
【小題4】Eating nuts may help us stay away from ________.
A.cancer B.fever C.flu D.headache
【小題5】The passage is most probably from a journal of ___________ .
A.entertainment B.diet C.sports D.science

查看答案和解析>>

科目: 來源: 題型:閱讀理解

The Healthy Habits Survey shows that only about one third of American seniors(年長者) have correct habits. Here are some findings and expert advice.
1.How many times did you brush your teeth yesterday?
·Finding:About 33% of seniors brush their teeth only once a day.
·Step:Remove the 300 kinds of bacteria in your mouth each morning with a battery-operated toothbrush. Brush gently for 2 minutes, at least twice a day.
2.How many times did you wash your hands or bathe yesterday?
·Finding:Seniors, on average, bathe fewer than 3 days a week. And nearly 30% wash their hands only 4 times a day—half of the number that doctors advise.
·Step:We touch our faces around 3,000 times a day-often inviting germs(病菌)to enter our mouth, nose, and eyes. Use toilet paper to avoid touching the door handle. And, most important, wash your hands often with hot running water and soap for 20 seconds.
3. How often do you think about fighting germs?
·Finding:Seniors are not fighting germs as well as they should.
·Step:Be aware of germs. Do you know it is not your toilet but your kitchen sponge(海綿)that can carry more germs than anything else? To kill these germs, keep your sponge in the microwave for 10 seconds.
【小題1】What is found out about American seniors?

A.Most of them have good habits.
B.Nearly 30% of them bathe three days a week .
C.All of them are fighting germs better than expected .
D.About one third of them brush their teeth only once a day
【小題2】Doctors suggest that people should wash their hands _________.
A.twice a day B.three times a day
C.four times a day D.eight times a day
【小題3】Which of the following is true according to the text?
A.We should stop touching our faces.
B.A kitchen sponge can carry more germs than a toilet.
C.There are less than 300 kinds of bacteria in the mouth.
D.We should wash our hands before touching a door handle.

查看答案和解析>>

科目: 來源: 題型:閱讀理解

Country-dwellers(農(nóng)村居民) often say the constant noise, heavy traffic and crowds of the city would drive them mad. Well, they might be right, according to the latest research. City residents are more likely to develop mental illnesses than those who live in villages, a study has found.
Researchers from Cardiff university examined the lifestyles of more than 200,000 people in Sweden and found that those who lived in urban areas were more at risk from mental illnesses than people who lived in villages.
The experts don’t know exactly why this is but they suggest that town and city residents are more likely to be ostracized(排擠) by those around them. They are more likely to experience discrimination(歧視) if they do not fit in, which can lead to them feeling anxious and even developing mental illnesses.
Dr Stanley Zammit, who led the research said that people living in towns and cities are more likely to develop other mental illnesses that result in personality changes — a condition known as non-affective psychosis(非情感性精神病).
Earlier this year an official report found that village-dwellers live an average of two years longer than those living in towns and cities. According to figures from the Office of National Statistics in the UK, men who live in villages are likely to live for between 78 and 79 years, while those in towns and cities can expect to survive to an age of 76. Women on average survive to their 81st birthday in towns and cities, but live to between 82 and 83 in villages. The small marked town of Wimborne Minster in rural Dorset was named the healthiest place to live in.
【小題1】What is the passage mainly about?

A.Country-dwellers are more likely to develop mental illnesses.
B.City-dwellers are more likely to develop mental illnesses.
C.Country-dwellers live longer than city-dwellers.
D.City-dwellers live longer than country-dwellers.
【小題2】The research from Cardiff University was based on the people’s _________.
A.interests. B.characters. C.occupations. D.lifestyles.
【小題3】It can be inferred that  ___________.
A.people like living in towns and cities
B.city-dwellers enjoy their peaceful city life
C.village-dwellers are more likely to be looked down upon by others
D.village-dwellers get along better with their neighbors than city-dwellers.
【小題4】Non-affective psychosis is a kind of mental illnesses that is linked to ________
A.character change B.temperature rise
C.pressure increase D.energy weakening
【小題5】We can learn from the last paragraph that generally ________ .
A.women living in villages live the longest
B.women living in cities live the longest
C.men living in villages live the longest
D.men living in cities live the longest.

查看答案和解析>>

科目: 來源: 題型:閱讀理解

Below are some smart ways to stay healthy suggested by some American experts.

Drink More Coffee
When was the last time you heard a doctor use the word miracle? Well, wake up and smell the coffee: “It’s amazing,” says liver specialist Sanjiv Chopra, MD, professor of medicine at Harvard Medical School. “Coffee is truly a lifesaving miracle drug.”
Though he says it’s still a “scientific mystery” how a simple cup of coffee works its wonders in the body, large epidemiological studies have repeatedly proved its astonishing benefits.
“Drink it black, or at most put a little skim milk in it” to minimize calories, Dr. Chopra recommends. He drinks at least four cups a day himself, though most people should limit themselves to two. And no, he jokes, “I’m not sponsored by Starbucks.”
Take a Walk for Your Memory
Aerobic (有氧運動的) exercise is good for your body, great for your mind, according to the latest research from brain-fitness pioneer Arthur Kramer. Every year, an area called the hippocampus, which is key to memory, shrinks by about 1 to 2 percent, increasing the risk of dementia (腦衰) as the years roll by. However, Kramer’s new investigations reveal that the hippocampi of adults who walked briskly for about 45 minutes three times a week grew by about 2 percent over the course of a year, preventing age-related shrinking.
It’s never too late to start exercising, Kramer says; volunteers in his research were between 55 and 80 years old and hadn’t exercised at all. And it doesn’t need to be backbreaking. “Anything that raises your heart rate seems to work,” he says. “Walking is fine. Just find something you like and do it.”
Early to Bed, Early to Eat
“Being a night owl might increase your waistline,” says sleep expert Michael Breus, PhD. People who stay up late and sleep late tend to eat more fast food and consume more of their calories after 8 p.m. than do normal sleepers.
“One of the easiest things that anyone on a diet can do to improve her results is go to bed and wake up at the same times every day,” Breus says. “This way, your body knows when to sleep and is much more efficient. Organize your eating, too, by trying to eat meals at the same times every day. Avoid eating after 8 p.m., and don’t miss morning meals by sleeping in.”
Use the 20-Second Rule
What’s the difference between having a goal and actually accomplishing it? Just 20 seconds, says positive-psychology specialist Shawn Achor. Researchers have learned that if we can cut 20 seconds off the startup time required for a task, we’re much more likely to follow through. So, for example, if you want to work out in the morning, place your shoes and exercise clothes next to your bed the night before. If you want to praise people more, put thank-you notes and a pen on your desk.
Imagine the Worst to Feel Better
Don’t count your blessings; subtract (扣除) them. “Consciously spend a few minutes imagining what your life would be like without the good things,” says Timothy Wilson, a psychologist at the University of Virginia. You’ll experience stronger feelings of love, gratitude, and happiness when you think about what life would be like without the people and things you love. “And they’ll seem surprising and special again,” he adds.
【小題1】 According to Sanjiv Chopra, most people should not drink more than ______ cups of coffee a day.
A.twoB.threeC.fourD.six
【小題2】Which of the following may help people on a diet to improve their results?
A.Raising their heart rate.B.Taking a walk for their memory.
C.Eating at fixed times.D.Sleeping in every morning.
【小題3】According to Shawn Achor, if people place their shoes and exercise clothes next to their bed at bedtime, they’re more likely to ______ the next morning.
A.do exerciseB.set a goal
C.cut 20 seconds offD.sleep 20 minutes more
【小題4】 Why should people spend a little time imagining their life without good things?
A.To experience surprise.B.To feel better.
C.To consider their own blessings.D.To prepare for the worst.

查看答案和解析>>

同步練習(xí)冊答案