Food picked up just a few seconds after being dropped is less likely to contain bacteria than if it is left for longer periods of time, according to the findings of research carried out at Aston University’s School of Life and Health Sciences. The findings suggest there may be some scientific basis of the "5-second rule" — the belief about it being fine to eat food that has only had contact with the floor for five seconds or less. Although people have long followed the ‘5-second rule’, until now it was unclear whether it actually helped.
The study, undertaken by final year Biology students and led by Anthony Hilton, Professor of Microbiology at Aston University, monitored the transfer of the common bacteria from a variety of indoor floor types as carpet, cement floor to toast, pasta, biscuit and a sticky sweet when contact was made from 3 to 30 seconds. The results showed that: time is a significant factor in the transfer of bacteria from a floor surface to a piece of food, and the type of flooring the food has been dropped on has an effect, with bacteria least likely to transfer from carpeted surfaces and most likely to transfer from cement flooring surfaces to moist foods making contact for more than 5 seconds. Professor Hilton said, "Consuming food dropped on the floor still carries an infection risk as it very much depends on which bacteria are present on the floor at the time."
The Aston team also carried out a survey of the number of people who employ the ‘five-second rule’. The survey showed that: 87% of the people surveyed said they would eat food dropped on the floor, or already have done so. 55% of those that would, or have eaten food dropped on the floor are women. 81% of the women who would eat food from the floor would follow the ‘5-second rule’. Professor Hilton added, "Our study showed that a surprisingly large majority of people are happy to consume dropped food, with women the most likely to do so. But they are also more likely to follow the ‘5-second rule, which our research has shown to be much than an old wives’ tale."
1.According to the passage, which of the following is true?
A. A toast dropped on the carpet is easier to be polluted than that dropped on the cement floor.
B. A sticky chocolate dropped on the carpet is easier to be polluted than that dropped on the cement floor.
C. The food dropped on the carpet shares the same potential of being polluted with the food dropped on the cement floor.
D. The food dropped on the cement floor is not as safe as food dropped on the carpet within 30 seconds.
2.What is the passage probably developed?
A. Contrast B. Example
C. Time D. Space
3.How did Professor Hilton feel after analyzing how many people chose to eat dropped food?
A. Puzzled. B. Upset.
C. Satisfied. D. Astonished.
4.What is the main idea of this passage?
A. The food which is dropped on the floor can be eaten safely.
B. A research on the safety of food dropped on the floor is undertaken.
C. The bacteria have no negative effect on the safety of food.
D. People surveyed in the research are willing to accept the idea.
高一英语阅读理解中等难度题
Food picked up just a few seconds after being dropped is less likely to contain bacteria than if it is left for longer periods of time, according to the findings of research carried out at Aston University’s School of Life and Health Sciences. The findings suggest there may be some scientific basis of the "5-second rule" — the belief about it being fine to eat food that has only had contact with the floor for five seconds or less. Although people have long followed the ‘5-second rule’, until now it was unclear whether it actually helped.
The study, undertaken by final year Biology students and led by Anthony Hilton, Professor of Microbiology at Aston University, monitored the transfer of the common bacteria from a variety of indoor floor types as carpet, cement floor to toast, pasta, biscuit and a sticky sweet when contact was made from 3 to 30 seconds. The results showed that: time is a significant factor in the transfer of bacteria from a floor surface to a piece of food, and the type of flooring the food has been dropped on has an effect, with bacteria least likely to transfer from carpeted surfaces and most likely to transfer from cement flooring surfaces to moist foods making contact for more than 5 seconds. Professor Hilton said, "Consuming food dropped on the floor still carries an infection risk as it very much depends on which bacteria are present on the floor at the time."
The Aston team also carried out a survey of the number of people who employ the ‘five-second rule’. The survey showed that: 87% of the people surveyed said they would eat food dropped on the floor, or already have done so. 55% of those that would, or have eaten food dropped on the floor are women. 81% of the women who would eat food from the floor would follow the ‘5-second rule’. Professor Hilton added, "Our study showed that a surprisingly large majority of people are happy to consume dropped food, with women the most likely to do so. But they are also more likely to follow the ‘5-second rule, which our research has shown to be much than an old wives’ tale."
1.According to the passage, which of the following is true?
A. A toast dropped on the carpet is easier to be polluted than that dropped on the cement floor.
B. A sticky chocolate dropped on the carpet is easier to be polluted than that dropped on the cement floor.
C. The food dropped on the carpet shares the same potential of being polluted with the food dropped on the cement floor.
D. The food dropped on the cement floor is not as safe as food dropped on the carpet within 30 seconds.
2.What is the passage probably developed?
A. Contrast B. Example
C. Time D. Space
3.How did Professor Hilton feel after analyzing how many people chose to eat dropped food?
A. Puzzled. B. Upset.
C. Satisfied. D. Astonished.
4.What is the main idea of this passage?
A. The food which is dropped on the floor can be eaten safely.
B. A research on the safety of food dropped on the floor is undertaken.
C. The bacteria have no negative effect on the safety of food.
D. People surveyed in the research are willing to accept the idea.
高一英语阅读理解中等难度题查看答案及解析
Some people love eating food right after it is cooked. I prefer food just take out from the freezer. Fruit, candy, nuts, chocolate, cake with butter cream frosting(糖霜),even peas, all of them taste delicious when frozen. In fact, I often eat them that way.
I was a kid when I picked up the habit. In my family, lots of things were thrown into the freezer —finally, two freezers—to prevent them from going bad. Among them were some of the candies my sisters and I had collected on Halloween.
If we eat when they are still warm, we’ll find ourselves taking the cookies more than we should. It’s better if we can put them into the freezer and wait. That way we’ll eat less and enjoy them more because they are hard and chewing becomes a slower, more patient effort. That’s the point about frozen butter-cream frosting. Put it in your mouth at room temperature, and it’s gone very quickly. But when it’s frozen, you can enjoy the taste much longer as it melts(融化) in your mouth.
The freezer treats a lot of fruits kindly. Take frozen grapes for example, I keep a bowl of grapes in my freezer. They become a little icy, and somehow their sweetness is improved. They are perfect and healthy dessert(点心).This is the same with oranges, apples, bananas…You might think bananas would get super-hard when frozen. Wrong! They become cool, creamy and sweet. If you have wisely covered some or all of the bananas with melted chocolate before putting them into the freezer, they will have a double taste.
As long as you aren’t eating anything that truly has to be hot, go ahead and experiment.
1. What is the passage intended to tell us ____________.
A. Fruit should be frozen before one eats it. B. Frozen food is better than hot food.
C. The author prefers frozen food. D. Hot food is not healthy.
2.The author began to enjoy frozen food when he _________.
A. was young B. learned cooking C. got married D. got a fever
3. Why does the author NOT advise us to take hot cookies?
A. Because they need more time to prepare.
B. Because the taste is not good when they are hot.
C. Because they are too delicious to avoid our overeating.
D. Because we may eat them quickly and enjoy them less.
4.What does the underlined word “it” in the third paragraph refer to?
A. The taste B. Butter cream C. The cookie D. Frozen butter cream frosting
5. Which of the following is the advice the author gives on eating fruit?
A. Make bananas hard. B. Keep grapes in a bowl.
C. Mix kinds of fruits together. D. Add melted chocolate to bananas.
高一英语阅读理解中等难度题查看答案及解析
Yaoming is so tall that he can be ________in the crowd easily.
A. picked up B. picked out
C. figured out D. helped out
高一英语单项填空简单题查看答案及解析
Unluckily, when I dropped in, Dr. Smith ____, so we only had time for a few words.
A.was just leaving B.has just left C.had just left D.just left
高一英语单项填空中等难度题查看答案及解析
He_______just before the concert started.
A.dropped out | B.dropped away | C.dropped in | D.dropped up |
高一英语单项填空简单题查看答案及解析
After lunch,I walked back home. I was just to cross the street when I heard the sound of a coin dropping. It wasn’t much but,as I turned, my eyes caught the heads of several other people turning too. A woman had dropped what appeared to be a dime.
The tinkling sound of a coin dropping on pavement is an attention-getter.It Can be nothing more than a penny.Whatever the coin is,no one ignores the sound of it.It got me thinking about sounds again.We are surrounded by so many sounds that attract the most attention.
People in New York City seldom turn to look when a fire engine,a police car or an ambulance comes screaming along the street.When I’m in New York,I’m a New Yorker.I don’t turn either.Like the natives,I hardly hear a siren(警报)there.
However,at home in my little town in Connecticut,it’s different.The distant sound of a police car, all emergency vehicle or a fire siren brings me to my feet if I’m seated and brings me to the window if I’m in bed.It’s the quietest sounds that have most effect on us.not the loudest.In the middle of the night, I can hear a dripping tap a hundred yards away thigh three closed doors.I’ve been hearing little creaking noises and sounds which my imaginnation turns into footsteps in the middle of the night for twenty-five years in our house.How come I never hear those sounds in the daytime?
I’m quite clear in my mind what the good sounds are and what the bad sounds are,I’ve turned against whistling,for instance:I used to think of it as the mark of a happy worker but lately I’ve been associating the whistler with a nervous person making unconscious noises.The tapping,tapping,tapping of my typewriter as the keys hit the paper is a lovely sound to me.I often like the sound of what I write better than the looks of it.
1.The sound of a coin dropping makes people________
A.think of money B.look at each other
C.pay attention to it D.stop crossing the street
2.The author dislikes whistling because__________
A.he has got tired of it B.it reminds him of tense people
C.he used to be happier D.he doesn’t like workers
3.What kind of sound does the author find pleasant?
A.Tapping sound of his typewriter. B.Clinking sound of keys
C.Tinkling sound of a coin dropping. D.Creaking sound of footsteps
4.How does the author feel about sounds in general?
A.They make him feel al home. B.He thinks they should be ignored
C.He prefers silence to loud noises. D.He believes they are part of our life
高一英语阅读理解中等难度题查看答案及解析
I ran into a local store today to pick up a few things. With an important meeting to attend, I was in a hurry , so I didn’t take a cart (手推车) on my way inside. As I walked between the shelves in the store, I passed by a young couple and their baby. I continued going through the store, picked up a few items I needed and ended up standing behind this couple in the checkout line.
While waiting, I noticed that the young father was holding his money tightly and nervously. The young mother was carrying a baby in her arms and asked the cashier (收银员) for a job application.
When the total was rung up, they had to pick items out of their cart because they didn’t have enough money. But all their items were basic necessities(必需品) that they needed most. It just broke my heart to watch the couple try to think about what they could do without. However, they were able to whittle down their items and paid the bill with the money that they had.
After they left, I quietly asked the cashier to add those items to mine. The cashier rang everything up, and then got me a shopping cart. We put in their items and I hurried over to their car. “This is for you,” I told them.
The young father just looked at me with such appreciation and thanked me. I will never forget the expression in his eyes. As I was getting into my car, they drove over. The young mother said, “Miss, thank you so much.”
Tears welled up in my eyes---as they are again now, while I write this. “You are so welcome. Pay it forward some day,” I replied.
1.The underlined phrase “whittle down” in Paragraph 3 probably means “__________”.
A. add to B. break down C. pay for D. cut down
2.The author felt __________ to watch the couple taking some items out.
A. angry B. sad C. excited D. interested
3.It can be inferred from the passage that _________.
A. the young mother didn’t have a job then
B. the young father felt so sorry to accept help
C. the cashier treated the young couple impolitely
D. the young couple bought something unnecessary
4.The author’s main purpose in sharing the story is to tell us __________.
A. what a great plan she made
B. to take a cart while shopping
C. to help those who are in need
D. how to pick out basic necessities
高一英语阅读理解中等难度题查看答案及解析
I ran into a local store today to pick up a few things. With an important meeting to attend, I was in a hurry , so I didn’t take a cart (手推车) on my way inside. As I walked between the shelves in the store, I passed by a young couple and their baby. I continued going through the store, picked up a few items I needed and ended up standing behind this couple in the checkout line.
While waiting, I noticed that the young father was holding his money tightly and nervously. The young mother was carrying a baby in her arms and asked the cashier (收银员) for a job application.
When the total was rung up, they had to pick items out of their cart because they didn’t have enough money. But all their items were basic necessities(必需品) that they needed most. It just broke my heart to watch the couple try to think about what they could do without. However, they were able to whittle down their items and paid the bill with the money that they had.
After they left, I quietly asked the cashier to add those items to mine. The cashier rang everything up, and then got me a shopping cart. We put in their items and I hurried over to their car. “This is for you,” I told them.
The young father just looked at me with such appreciation and thanked me. I will never forget the expression in his eyes. As I was getting into my car, they drove over. The young mother said, “Miss, thank you so much.”
Tears welled up in my eyes---as they are again now, while I write this. “You are so welcome. Pay it forward some day,” I replied.
1.The underlined phrase “whittle down” in Paragraph 3 probably means “__________”.
A. add to B. break down
C. pay for D. cut down
2.The author felt __________ to watch the couple taking some items out.
A. angry B. sad
C. excited D. interested
3.It can be inferred from the passage that _________.
A. the young mother didn’t have a job then
B. the young father felt so sorry to accept help
C. the cashier treated the young couple impolitely
D. the young couple bought something unnecessary
4.The author ’ s main purpose in sharing the story is to tell us __________.
A. what a great plan she made
B. to take a cart while shopping
C. to help those who are in need
D. how to pick out basic necessities
高一英语阅读理解中等难度题查看答案及解析
I ran into a local store today to pick up a few things. With an important meeting to attend, I was in a hurry , so I didn’t take a cart (手推车) on my way inside. As I walked between the shelves in the store, I passed by a young couple and their baby. I continued going through the store, picked up a few items I needed and ended up standing behind this couple in the checkout line.
While waiting, I noticed that the young father was holding his money tightly and nervously. The young mother was carrying a baby in her arms and asked the cashier (收银员) for a job application.
When the total was rung up, they had to pick items out of their cart because they didn’t have enough money. But all their items were basic necessities(必需品) that they needed most. It just broke my heart to watch the couple try to think about what they could do without. However, they were able to whittle down their items and paid the bill with the money that they had.
After they left, I quietly asked the cashier to add those items to mine. The cashier rang everything up, and then got me a shopping cart. We put in their items and I hurried over to their car. “This is for you,” I told them.
The young father just looked at me with such appreciation and thanked me. I will never forget the expression in his eyes. As I was getting into my car, they drove over. The young mother said, “Miss, thank you so much.”
Tears welled up in my eyes---as they are again now, while I write this. “You are so welcome. Pay it forward some day,” I replied.
1.The underlined phrase “whittle down” in Paragraph 3 probably means “__________”.
A. add to B. break down
C. cut down D. pay for
2.The author felt __________ to watch the couple taking some items out.
A. sad B. angry C. excited D. interested
3. It can be inferred from the passage that _________.
A. the young father felt so sorry to accept help
B. the young mother didn’t have a job then
C. the cashier treated the young couple impolitely
D. the young couple bought something unnecessary
4.The author’s main purpose in sharing the story is to tell us __________.
A. what a great plan she made
B. to take a cart while shopping
C. how to pick out basic necessities
D. to help those who are in need
高一英语阅读理解中等难度题查看答案及解析
I _____ some knowledge of cooking just by watching my mother doing it.
A. put up B. looked up C. picked up D. set up
高一英语单项填空困难题查看答案及解析