Dust on furniture may be bad news for waistlines (腰围). But it’s far too early to add dusting to a weight-loss plan. Dietary fats and other materials that make up indoor dust can send a signal to human fat cells, telling them to grow. That process, in turn, might slow the body’s rate of burning energy. Such changes could add to any weight problems a person might have.
“We don’t know what that means to long-term health and certain diseases yet,” says Heather Stapleton, one of the study’s authors. But she notes that her team’s findings also raise a question of whether pollutants in dust might play some role in the growing, global problem of obesity (肥胖).
Stapleton and her colleagues collected dust from homes and offices. Studies found that some materials in the dust could turn on a protein (蛋白质) called PPAR-gamma 1. It’s found in many human tissues. Turning this protein on can cause fat cells to grow. Researchers think this protein may be involved in obesity. But a second study now finds evidence that certain fats are mostly to blame. Cooking oils may send out some of these fats into the air, where they eventually find their way into house dust. Or, the authors say, the fats might enter house dust as part of the hair or skin cells shed (脱落) by people or pets.
“While the findings are amazing,” says Mitchell Lazar, another study author, “these findings need to be taken as very limited.” Indeed, he adds several cautions about how the findings should be understood. “For one thing, people eat these fats in foods all of the time. That is likely to be a lot more than would be consumed from indoor dust,” he said.
1.What do we know about PPAR-gamma 1? _____
A. It comes from dust.
B. It leads to weight gain.
C. It can help get rid of dust.
D. It only appears in human bodies.
2. What’s the best title for the text? _____
A. Can house dust make us fat?
B. Why is it important to clean?
C. Anything to do to deal with dust?
D. What is the best way to lose weight?
高一英语阅读理解中等难度题
Dust on furniture may be bad news for waistlines (腰围). But it’s far too early to add dusting to a weight-loss plan. Dietary fats and other materials that make up indoor dust can send a signal to human fat cells, telling them to grow. That process, in turn, might slow the body’s rate of burning energy. Such changes could add to any weight problems a person might have.
“We don’t know what that means to long-term health and certain diseases yet,” says Heather Stapleton, one of the study’s authors. But she notes that her team’s findings also raise a question of whether pollutants in dust might play some role in the growing, global problem of obesity (肥胖).
Stapleton and her colleagues collected dust from homes and offices. Studies found that some materials in the dust could turn on a protein (蛋白质) called PPAR-gamma 1. It’s found in many human tissues. Turning this protein on can cause fat cells to grow. Researchers think this protein may be involved in obesity. But a second study now finds evidence that certain fats are mostly to blame. Cooking oils may send out some of these fats into the air, where they eventually find their way into house dust. Or, the authors say, the fats might enter house dust as part of the hair or skin cells shed (脱落) by people or pets.
“While the findings are amazing,” says Mitchell Lazar, another study author, “these findings need to be taken as very limited.” Indeed, he adds several cautions about how the findings should be understood. “For one thing, people eat these fats in foods all of the time. That is likely to be a lot more than would be consumed from indoor dust,” he said.
1.What do we know about PPAR-gamma 1? _____
A. It comes from dust.
B. It leads to weight gain.
C. It can help get rid of dust.
D. It only appears in human bodies.
2. What’s the best title for the text? _____
A. Can house dust make us fat?
B. Why is it important to clean?
C. Anything to do to deal with dust?
D. What is the best way to lose weight?
高一英语阅读理解中等难度题查看答案及解析
Los Angeles：Love for Mom is a given，but buying flowers on her big day may not be. A slump in flower sales since late last year was likely to continue through Mother's Day，another example of Americans cutting back on spending due to recession fears，which is a period of reduced trade and business activity，and increasing food and gasoline prices.
“If you look at what has happened on Valentine’s Day and Christmas, the market for flowers has cooled,” said Eric Bender， an analyst at Bream Murray. “Growth has slowed in the past two quarters. Mother's Day will probably be a slow quarter，too.’’ US floral sales for Mother’s Day, celebrated yesterday, will fall thirteen percent this year to $2 billion，with consumers spending an average of $17.65.according to the National Retail Federation estimates.
Mother’s Day，which accounts for a one—quarter of annual holiday purchases，according to the Society of American Florists，is traditionally the day when floral bouquets are delivered to the doorsteps of many mothers.But this year，the shop-owners are concerned.
Gabriel Soto，who owns a flower shop beneath an office high-rise in the Los Angeles financial district, is expecting lower sales--and has ordered 30 percent fewer flowers than normal this Mother’s Day.
Last month, Solo, who also operates website downtown-flowers, net, closed another store in a nearby building that was headquarters to a mortgage company. After workers lost their jobs due to the housing crisis, orders decreased.
1.The underlined word “slump” in Para. 2 probably means__________________________.
A. sharp increase in price B. great fear for losing jobs
C. global worry of floral stores D. sudden fall by a large amount
2.According to the author, Mother's Day should be an occasion of_____________.
A. a large family get-together
B. a big annual holiday purchase
C. a great love showed to mothers
D. a celebration among Americans
3.This passage implies that Americans have___________.
A. met financial problems recently
B. no longer bought flowers for mothers
C. delivered flowers to every house for mothers
D. cut back on spending because of having lost jobs
4.Which would be the best title for this passage?
A. Hard time coming nearer
B. Mother’s Day and crisis
C. Sorry mom, love you but no flowers
D. Holiday purchases have a hard time
高一英语阅读理解简单题查看答案及解析
We ____________ on the journey now but for this bad weather.
A. are B. were C. would be D. will be
高一英语单项填空中等难度题查看答案及解析
Old age may not sound exciting. But recent findings offer good news for older people and for people worried about getting older. Researchers found that people become happier and experience less worry after they reach the age of fifty. In fact, they say by the age of eighty-five, people are happier with their life than they were when they were eighteen years old.
The findings came from a survey of more than three hundred forty thousand adults in the United States. The Gallup Organization questioned them by telephone in 2008. At that time, the people were between the ages of eighteen and eighty-five. The researchers asked questions about emotions like happiness, sadness and worry. They also asked about mental or emotional stress.
Arthur Stone in the Department of Psychiatry and Behavioral Science at Stony Brook University in New York led the study. His team found that levels of stress were highest among adults between the ages of twenty-two and twenty-five. The findings showed that stress levels dropped sharply after people reached their fifties.
The study also showed that men and women have similar feeling patterns as they grow older. However, women at all ages reported more sadness, stress and worry than men.
Researchers say they do not know why happiness increases as people get older. One theory is that, as people grow older, they grow older, they grow more thankful for what they have and have better control of their feelings. They also spend less time thinking about bad experiences.
Professor Stone says the emotional patterns could be linked to changes in how people see the world, or maybe even changes in brain chemistry.
The researchers also considered possible influences like having young children, being unemployed or being single. But they found that influences like these did not affect the levels of happiness and well-being related to age.
1.According to the survey of The Gallup Organization people are most likely to become happier ___________.
A. when they are between ages of 18 and 85
B. when they come to their old age
C. when they are in their twenties
D. when they are eighteen years old
2.According to Arthur Stone, old people ________.
A. have a positive attitude toward their life
B. can control their behaviors better
C. dream about good things every day
D. have earned a large amount of money
3.From the last paragraph we can know that ________.
A. you must be worried if you have young children
B. health has nothing to do with your age
C. you can be happy even if you are still single
D. happiness depends on your family and job
4.Which of the following would be the best title for this passage?
A. Getting older means getting happier
B. The young are happier than the old
C. The younger, the happier
D. Women are easier to happy in life
高一英语阅读理解中等难度题查看答案及解析
Old age may not sound exciting.But recent findings offer good news for older people and for people worried about getting older.Researchers found that people become happier and experience less worry after they reach the age of fifty.In fact，they say by the age of eightyfive，people are happier with their life than they were when they were eighteen years old.
The findings came from a survey of more than three hundred forty thousand adults in the United States.The Gallup Organization questioned them by telephone in 2008.At that time，the people were between the ages of eighteen and eightyfive.The researchers asked questions about emotions like happiness，sadness and worry.They also asked about mental or emotional stress.
Arthur Stone in the Department of Psychiatry and Behavioral Science at Stony Brook University in New York led the study.His team found that levels of stress were highest among adults between the ages of twentytwo and twentyfive.The findings showed that stress levels dropped sharply after people reached their fifties.
The study also showed that men and women have similar feeling patterns as they grow older.However，women at all ages reported more sadness，stress and worry than men.
Researchers say they do not know why happiness increases as people get older.One theory is that，as people grow older，they grow more thankful for what they have and have better control of their feelings.They also spend less time thinking about bad experiences.
Professor Stone says the emotional patterns could be linked to changes in how people see the world，or maybe even changes in brain chemistry.
The researchers also considered possible influences like having young children，being unemployed or being single.But they found that influences like these did not affect the levels of happiness and wellbeing related to age.
1.According to the survey of The Gallup Organization，people are most likely to become happier .
A. when they are between ages of 18 and 85
B. when they come to their old age
C. when they are in their twenties
D. when they are eighteen years old
2.According to Arthur Stone，old people .
A. have a positive attitude toward their life
B. can control their behaviors better
C. dream about good things every day
D. have earned a large amount of money
3.From the last paragraph we can know that .
A. you must be worried if you have young children
B. health has nothing to do with your age
C. you can be happy even if you are still single
D. happiness depends on your family and job
4.Which of the following would be the best title for this passage?
A. Getting Older Means Getting Happier
B. The Young Are Happier Than the Old
C. The Younger，the Happier
D. Women Are Easier to Happy in Life
高一英语阅读理解中等难度题查看答案及解析
Envelope Budget
From McDonald's to Sonic, fast food had a bad effect on my waistline and my budget. It was nothing to run to a drive-through to pick up a cold drink or a quick bite to eat. It was so easy to use my card for a small purchase. For me, I got a lot of satisfaction from fast food.
One day I sat down and calculated that I was spending a surprising $40 a week on fast food. This was a lot of iced coffee and hamburgers! Instead of reducing my guilty pleasures, I decided to give myself a strong budget to reduce my consumption. Every Monday I placed an envelope with $20 in my purse. That was my fast food budget for the entire week. If there was anything left over at the end of the week, it was mine to save or spend. If I spent all of the money during the week, there were no more fast food stops that week.
The budget made me more mindful of my purchases. Instead of purchasing a large drink from Sonic, I would purchase a small. It was sill satisfying but not nearly as pricey. Instead of eating a whole meal, I would pick the part that I actually wanted. Many days, the thought of hanging onto the money for a special purpose meant more to me than the instant satisfaction of fast food. I never really felt unhappy because it was a conscious choice to spend or save with each purchase.
Envelope budget kept me honest. I had a clear idea how much money was spent each week on fast food purchases. I started to bring my lunches more often to save more money for the week. It was a fun challenge to see how much I could save every week.
Changing the way I spent on fast food not only helped my budget, but improved my weight. In the first month I was able to get rid of 5 pounds by simply changing the way I approached spending on fast food. Now I am more likely to bring my lunch than to buy it. I am not upset, but empowered to make positive choices to improve my life.
1.According to Paragraph 1, the author _____________.
A. was fond of fast food very much
B. had no time to cook for herself
C. lived with a small amount of money
D. got some benefits from using her card
2.The author set her envelope budget to _____________.
A. buy fast food at a good bargain
B. save money to buy more fast food
C. get rid of the habit of eating fast food
D. make fast food spending under control
3.We can infer from the last paragraph that _____________.
A. it is unusual to make some changes
B. the budget means a pressure on life
C. envelope budget is good for health
D. it is hard to enjoy a healthy lifestyle
4.What is the passage mainly about?
A. Why the author became addicted to fast food.
B. How envelope budget changed the author's life.
C. How fast food controlled the author's behavior.
D. Why the author took envelope budget seriously.
高一英语阅读理解中等难度题查看答案及解析
As teenagers get older, they struggle to be ________, but at the same time, they may badly want and need their parents’ love.
A. patient B. brilliant
C. independent D. tolerant
高一英语单项填空简单题查看答案及解析
语法填空
What is your favourite cartoon? It may be 1. (difficulty) for you to decide．But for pianist Lang Lang, Tom and Jerry is the best one．
When Lang2. (be) two years old, he saw Tom playing3. piano．This was his first time to enjoy western music and this experience encouraged him 4. (learn) to play the piano well．His talent at the keyboard has taken him from Shenyang5. the world．Lang Lang became a good piano student at three．Ever since, the boy has been doing better 6. better．In 1997, the 15-year-old boy studied at a famous American music college．
Lang Lang's performances are energetic．He is well-known for 7. （make）facial expressions and moving around while playing the piano．
The road to 8. ( succeed)has never been easy．Lang's father stopped his job to look 9. him, while his mother stayed in Shenyang to make money．But Lang considers 10. (him)lucky and believes he should give something back．He has helped the children in poor areas a lot．
高一英语语法填空中等难度题查看答案及解析
Sea turtles have been on Earth for millions of years, but they may soon die out. The main 1 to them is people who kill them for food, according to Dr. Wallace J. Nichols of the University of California.
But the latest news may 2 turtle hunting: Dr. Nichols has found that sea turtles 3 a lot of pollution from the ocean. This pollution is unhealthy for both turtles and humans. It can cause __4__ damage to their bodies and lead to death. Research shows that many people get sick and even die from eating sea turtle meat.
In the US, most people have never eaten turtle. This is because turtles are 5 by the United States law, which makes it 6 to harm or kill these amazing animals. “But many people in other countries still eat them,” explains Nichols. “Our first 7 was to save turtles; now we must save 8 too.”
Davis said he also wants to send out a bigger 9 that we should protect the oceans. “The health of the ocean, animals in the ocean, and our own health are all 10 . A clean ocean is really good for us too because of the food we eat from there.”
1.A. doubt B. stream C. danger D. worry
2.A. accelerate B. slow C. improve D. change
3.A. cause B. expand C. absorb D. reduce
4.A. accidental B. occasional C. unknown D. serious
5.A. qualified B. protected C. restricted D. produced
6.A. impossible B. difficult C. illegal D. abnormal
7.A. goal B. impression C. difficulty D. cost
8.A. Earth B. ocean C. people D. animals
9.A. advertisement B. message C. sign D. problem
10.A. concerned B. disturbed C. developed D. connected
高一英语完型填空中等难度题查看答案及解析
Mom’s birthday present? It may be a difficult thing for some people, but for me, it is an easy thing. Mom loved flowers, so every year I sent her flowers. Actually she had a bed of irises (鸢尾花) in the backyard of her small, Indiana farm. They were beautiful. “Take some,” she said, “Dig some up and plant them on the side of your own house.”
But in my yard they became lacking in energy. A year passed, then two, but not one flower appeared. I cut back all their green leaves. I was tired of seeing them so lonely. Finally, I dug the irises up and threw them away.
About that time Mom died unexpectedly. My sister and I sold the farm. I never went back to see the irises. I just couldn’t stand seeing another family living in our home—Mom’s home. Autumn came, then winter. The following spring, as Mom’s birthday approached, I struggled with the question of how to remember her. I stared out of the window and saw a few stubborn irises in my side yard sprouting (发芽), —tall, thin but flowerless. Because of seeing them, I decided to order flowers as I always did on Mom’s birthday, and send them to my sister. I wished so badly I could still send flowers to Mom. But that was impossible.
On the morning of Mom’s birthday, I was in my car ready to work. Something in the yard caught my eye. The irises! One had bloomed with flowers, big, showy and purple, as lovely as they ever had been on Mom’s farm. I smiled and turned my eyes upward. I could no longer send flowers to Mom. But somehow, she’d been able to send them to me.
1.According to the first paragraph, Mom ________.
A. didn’t like the presents from the author
B. wanted to give the author some flowers
C. lived with the author on an Indiana farm
D. got different birthday presents from the author every year
2.At first, the irises in the author’s yard ________.
A. all died quickly
B. grew as well as on Mom’s farm
C. didn’t bloom at all
D. grew better than those on Mom’s farm
3.What troubled the author?
A. She didn’t know how to grow irises.
B. She regretted they had sold Mom’s farm.
C. She couldn’t bear others living in Mom’s home.
D. She didn’t know what to do in memory of Mom.
4.What can be learned from the last paragraph?
A. All the irises in the author’s yard bloomed.
B. The author went to see the irises in Mom’s yard.
C. It was Mom who took care of these irises in the author’s yard.
D. The author thought the blooming irises were gifts from Mom.
高一英语阅读理解中等难度题查看答案及解析