The average American male consumes 100 grams of protein daily — almost double the necessary amount. This overconsumption isn’t able to continue for long. Besides, there’ll be an extra 2.5 billion people by 2050. Therefore, the United Nations will need to increase as many as 70% food projects by 2050 to solve this problem.
To survive, we need to change the way we farm and eat. Experts say algae(藻类植物), which can offer lots of protein, could be a possible solution. Meat, which is our main source of protein, uses a lot of our limited resources, like water and land, not just for the animals but also to grow their food. But the green slimy algae that lives in oceans, ponds and aquariums can grow fast, is packed with nutrition and needs next to nothing to grow. It can even grow in a desert. That’s surely a big deal.
The wellness company iWi is now growing a type of algae on a large scale. The farm has green seas as far as the eye can see. The entire farm covers 900 acres, 98 of which is currently being cultivated and operates all year around.
The algae on the farm is grown in long ponds called “raceways”, and an engine constantly stir water to make sure the algae is exposed to the sunlight. CO2 and a tiny bit of fertilizer are then pumped into the water to help the algae grow.
The fresh algae grown on iWi’s farm is a far cry from the unpleasant taste in your mind. That’s because not all types of algae smell or taste like pond scum(浮垢). And the farm’s algae simply tastes salty and gives hope that people would willingly eat this.
“The protein we’re producing is not going to be green,” said Miguel Calatayud. “Our protein powders will be difficult to be noticed when added to other foods. It will be in every single food that you eat on an everyday basis. Algae is going to be part of a regular food chain for us. It’s going to be a great thing for all of us and for our entire planet.”
1.Why will the UN need to increase its food projects?
A.To deal with over-population in the world.
B.To double Americans’ protein consumption.
C.To ensure Americans’ 100 grams of protein daily.
D.To solve the possible protein shortage worldwide.
2.What’s the algae’s advantage over meat?
A.It contains more protein. B.It can grow in the desert.
C.It is much more delicious. D.It is environmentally-friendly.
3.What does the underlined part in Paragraph 5 mean?
A.Is considered as. B.Is different from.
C.Is responsible for. D.Is applied to.
4.We can infer from Miguel Calatayud that the new algae_____.
A.can benefit the demand for protein unconsciously
B.has a surprisingly good effect on people’s health
C.has a different color from the common algae
D.can change the future of our eating habits
高一英语阅读选择中等难度题
We live in a sweet world. An average American kid consumes(消耗) more than 20 teaspoons of sugar per day, and adults eat 50% more sugar today than they did in the 1970s. We all know that too much sugar isn’t good for us. Researchers at the University of Utah used mice to make a study to prove the toxic effects of eating more sugar. They found it could influence people’s health seriously.
During the 58-week-long study, mice were fed a diet containing 25% more sugar. This percentage is equal to a healthy human diet along with three cans of soda daily. The team found that these mice were twice as likely to die as mice without eating so much sugar. Though the mice did not show signs of obesity or high blood pressure, male mice produced 25% fewer offspring(后代) than the other mice.
The reason why mice were chosen for research by scientists is not far to seek. “Mice have the genetic(基因) structure similar to humans’. Most substances(物质) that are harmful to mice are also harmful to people; it’s likely that those important physical problems that cause the rising death rate among mice can also influence people,” says the study author James Ruff of the University of Utah. Findings from this study reveal negative effects that are not as detectable as weight gain or heart problems. Sugar can contribute to long-term changes in the body that can affect development and even shorten lives.
Different types of sugar have different effects on the human body. Some of the sugar we consume comes from foods we might expect—candy, soda, and cookies. But much of the sugar that we eat is hidden. Food companies add large amounts of sugar to items we may not classify as sweets. To help cut down extra sugar consumption, nutrition experts suggest looking at the ingredients on food packages. Cutting sugar out of the American diet altogether may be difficult, but making every effort to control our nation’s desire for sugar will avoid a sweeter future.
1.The underlined word “toxic” in Paragraph1 probably means “________”.
A. positive B. harmful C. doubtful D. reasonable
2.According to Paragraph 2, we can know ________.
A. mice eating more sugar will live longer
B. the study on mice lasted less than a year
C. the study showed the bad effects of more sugar on mice
D. mice eating more sugar will become fatter and fatter
3.Why did the scientists choose mice to do the study?
A. Because a substance may have the same effects on mice and humans.
B. Because mice have a longer lifespan (寿命) than other animals.
C. Because mice can take in the harmful substances easily and quickly.
D. Because mice are sensitive to the sweet taste.
4.It can be inferred from the last paragraph that ________.
A. sugar from candy, soda and cookies is helpful for us
B. we should never believe what food companies said
C. most types of sugar have similar effects on people
D. it’s necessary to control people’s wish for sugar
高一英语阅读理解中等难度题查看答案及解析
American researchers found females are the more talkative sex because of a special “language protein” in the brain.
The study, conducted by neuroscientists (神经学家) and psychologist from the University of Maryland, concluded that women talked more because they had more of the Foxp2 protein. The research, published in the Journal of Neuroscience, found that higher levels were found among humans that were women but in rats that were males. Their findings came after it was previously claimed that ladies speak about 20,000 words a day — over 13,000 more than men. “This study is one of the first to report a sex difference in the expression of a language-associated protein in humans or animals,” said Prof Margaret McCarthy, who led the study. In their study, the researchers attempted to determine what might make male rats more vocal than their female friends.
They separated four-day-old rats from their mothers and then counted the number of times they cried out in the “ultrasonic (超声波的) range”, the frequencies higher than humans can hear, over five minutes. While both sexes called out hundreds of cries, the males called out twice as often, they found. But when the pups were returned to their mother’s cage, she fussed over her sons first. Tests conducted on the parts of the brain known to be associated with vocal calls showed the male pups have up to twice as much Foxp2 protein as the females. The researchers then increased the production in the brains of female pups and reduced it in males. This led to the female rats crying out more often and their mothers showing more interest in them. In contrast, males became less “talkative”.
The researchers then tested samples from ten children, aged between three and five, which showed that females had up to 30 per cent more of the Foxp2 protein than males, in a brain area key to language in humans.
“Based on our observations, we assume higher levels of Foxp2 in girls and higher levels of Foxp2 in male rats is an indication that Foxp2 protein levels are associated with the more communicative sex,” said Prof McCarthy.
“Our results imply Foxp2 as a component (成分) of the neurobiological basis of sex differences in vocal communication in mammals.”
1.From the second paragraph, we can learn that ________.
A. women always speak more words than men
B. men and male rats have low levels of language protein
C. women and male rats have similar levels of Foxp2
D. McCarthy isn’t the first to find females more talkative
2.The underlined phrase “fussed over” in the third paragraph probably means ________.
A. paid attention to B. related to
C. put pressure on D. counted on
3.The researchers carried out the experiments on rats in order to ________.
A. test which part of the brain is key to language in rats and humans
B. prove the levels of Foxp2 protein in humans and rats are different
C. determine the reason why female rats are more talkative than male rats
D. discover the link between Foxp2 protein and vocal communication
4.Which of the following can be the best title for the passage?
A. Tests on humans and rats
B. Why women are the talkative sex
C. Sex differences in Foxp2 protein
D. Foxp2 protein determines oral ability
高一英语阅读理解中等难度题查看答案及解析
D
Global warming is the process of earth’s atmosphere heating up. Over the last 100 years, the average temperature of earth’s atmosphere has gone up 1 Fahrenheit. The weather has not changed exactly the same way in every area of the planet. But scientists think that the rise in average temperature is already affecting the earth’s climate.
Many scientists now believe that global warming is caused by cutting down trees, producing more trash, and polluting the environment are some of the reasons that the temperature has gone up. Many scientists believe that the biggest causes of global warming are new human technologies that release greenhouse gases into the atmosphere.
The greenhouse effect is not new. Certain gases in the atmosphere, like carbon dioxide, nitrous oxide and methane, prevent heat energy from escaping back into space. In the past, the climate didn’t change much because nature produced just the right amount of greenhouse gases to deal with it.
Today, most scientists are pretty sure that the rising temperature can’t be blamed on nature. Ever since the industrial revolution in the 1700s, humans have relied on machines for daily life. And many of those machines give off a lot of greenhouse gases. An increase in the release of greenhouse gases from human activities is throwing nature off balance.
The climate is a very complicated thing, but many scientists agree that the rising atmospheric temperature has already damaged the environment. Sheets of ice, called glaciers, are melting in Antarctica and other parts of the globe. As glaciers break off and melt into the oceans, they are adding warm water to the oceans and causing the sea level to rise.
Over the past last 100years, the sea level has risen 6-8 inches around the world. That means land along the coasts is beginning to disappear under water. Bigger and warmer oceans are also adding to other weather problems caused by pollution in the atmosphere. Some places have received more rain, others have had bigger storms and a few areas in the world have experienced unusual droughts.
68. What is mainly talked about in this passage?
A. The melting of glaciers. B. Global warming.
C. The world’s weather. D. The earth’s temperature.
69. What causes global warming according to scientists?
A. Human activities. B. The nature itself.
C. The earth’s atmosphere. D. New discoveries
70. How can greenhouse gases make the globe warm?
A. They keep heat in the atmosphere
B. They let the heat go out into space.
C. They release heat into the air.
D. They can make the other gases warm.
71. From the passage we can see that global warming will bring about _________.
A. the pollution in the atmosphere B. natural disasters
C. population pollution D. the rise of glaciers
高一英语阅读理解简单题查看答案及解析
Global warming is the process of earth’s atmosphere heating up. Over the last 100 years, the average temperature of earth’s atmosphere has gone up 1 Fahrenheit. The weather has not changed exactly the same way in every area of the planet. But scientists think that the rise in average temperature is already affecting the earth’s climate.
Many scientists now believe that global warming is caused by cutting down trees, producing more trash, and polluting the environment are some of the reasons that the temperature has gone up. Many scientists believe that the biggest causes of global warming are new human technologies that release greenhouse gases into the atmosphere.
The greenhouse effect is not new. Certain gases in the atmosphere, like carbon dioxide, nitrous oxide and methane, prevent heat energy from escaping back into space. In the past, the climate didn’t change much because nature produced just the right amount of greenhouse gases to deal with it.
Today, most scientists are pretty sure that the rising temperature can’t be blamed on nature. Ever since the industrial revolution in the 1700s, humans have relied on machines for daily life. And many of those machines give off a lot of greenhouse gases. An increase in the release of greenhouse gases from human activities is throwing nature off balance.
The climate is a very complicated thing, but many scientists agree that the rising atmospheric temperature has already damaged the environment. Sheets of ice, called glaciers, are melting in Antarctica and other parts of the globe. As glaciers break off and melt into the oceans, they are adding warm water to the oceans and causing the sea level to rise.
Over the past last 100years, the sea level has risen 6-8 inches around the world. That means land along the coasts is beginning to disappear under water. Bigger and warmer oceans are also adding to other weather problems caused by pollution in the atmosphere. Some places have received more rain, others have had bigger storms and a few areas in the world have experienced unusual droughts.
1.What is mainly talked about in this passage?
A. The melting of glaciers. B. Global warming.
C. The world’s weather. D. The earth’s temperature.
2.What causes global warming according to scientists?
A. Human activities. B. The nature itself.
C. The earth’s atmosphere. D. New discoveries
3.How can greenhouse gases make the globe warm?
A. They keep heat in the atmosphere
B. They let the heat go out into space.
C. They release heat into the air.
D. They can make the other gases warm.
4.From the passage we can see that global warming will bring about _________.
A. the pollution in the atmosphere B. natural disasters
C. population pollution D. the rise of glaciers
高一英语阅读理解中等难度题查看答案及解析
Global warming is the process of earth’s atmosphere heating up. Over the last 100 years, the average temperature of earth’s atmosphere has gone up 1 Fahrenheit. The weather has not changed exactly the same way in every area of the planet. But scientists think that the rise in average temperature is already affecting the earth’s climate.
Many scientists now believe that global warming is caused by cutting down trees, producing more trash, and polluting the environment which are some of the reasons why the temperature has gone up. Many scientists believe that the biggest causes of global warming are new human technologies that release greenhouse gases into the atmosphere.
The greenhouse effect is not new. Certain gases in the atmosphere, like carbon dioxide, nitrous oxide and methane, making it hard for heat energy to go into space. In the past, the climate didn’t change much because nature produced just the right amount of greenhouse gases to deal with it.
Today, most scientists are pretty sure that the rising temperature can’t be blamed on nature. Ever since the industrial revolution in the 1700s, humans have relied on machines for daily life. And many of those machines give off a lot of greenhouse gases. An increase in the release of greenhouse gases from human activities is throwing nature off balance.
The climate is a very complicated thing, but many scientists agree that the rising atmospheric temperature has already damaged the environment. Sheets of ice, called glaciers, are melting in Antarctica and other parts of the globe. As glaciers break off and melt into the oceans, they are adding warm water to the oceans and causing the sea level to rise.
Over the past 100 years, the sea level has risen 6-8 inches around the world. That means land along the coasts is beginning to disappear under water. Bigger and warmer oceans are also adding to other weather problems caused by pollution in the atmosphere. Some places have received more rain, others have had bigger storms and a few areas in the world have experienced unusual droughts.
1.What is mainly talked about in this passage?
A. The melting of glaciers. B. Global warming.
C. The world’s weather. D. The earth’s temperature.
2.What causes global warming according to scientists?
A. Human activities. B. The nature itself.
C. The earth’s atmosphere. D. New discoveries
3.How can greenhouse gases make the globe warm?
A. They keep heat in the atmosphere. B. They let the heat go out into space.
C. They release heat into the air. D. They can make the other gases warm.
4.From the passage we can see that global warming will bring about _____.
A. the pollution in the atmosphere B. natural disasters
C. population pollution D. the rise of glaciers
高一英语阅读理解中等难度题查看答案及解析
The average American child spends three to five hours a day watching TV. In 1961, the average child began to watch television at age three; however, today it is nine months. Yet, most parents think that television has bad influence on their children. For example, in the early 1970s, my parents believed that my bad eyesight was the result of sitting too close to the screen, and they therefore made my stay at least six feet from it. Today, most people have no such worry, but many new ridiculous (荒谬的) sayings have appeared:
*TV makes kids stupid. Many children watch more educational programs when they are pre-schoolers. When they grow up, they can read more books and have much better ideas to solve difficult problems than other children.
*TV makes kids violent. The real story is not so simple. Hundreds of studies show that watching violence on TV makes children more aggressive (好斗的). But a study of over 5,000 children also finds that some positive programs make children kinder. The problem is that kids are increasingly watching shows with violence instead of those suitable for their age.
*Sitting around watching TV makes kids overweight. An experiment finds that when children watch less television, they do lose extra weight; however, reducing their television time does not make them more active. The real problem lies in snacking (吃零食). A widespread habit for kids, and junk-food advertisements.
*TV helps kids get to sleep. The opposite is true. The more television children watch, the more likely they are to have irregular sleep and nap(小睡) patterns. Allowing kids to watch television is part of the problem, not the solution.
1.Which one is the advantage of educational TV programs?
A. They will make children solve difficult problems better than others.
B. they will improve children’s ability to get along with others.
C. They are likely to make children more aggressive.
D. They will make sure of children’s success in the future.
2.Why are children spending much time watching TV likely to be fat?
A. Watching TV makes children lazy and inactive.
B. Children are attracted by the food advertisement on TV.
C. Watching TV doesn’t burn up as much fat as doing sports.
D. Children like to snack while watching TV.
3.What influence does watching TV have on a child’s sleep?
A. Children are likely to sleep deeper after watching TV.
B. Children’s sleep time will be greatly reduced.
C. It will make children form a bad habit of sleeping.
D. It will make children sleep easier.
4.What is the purpose of this text?
A. To increase people’s knowledge of watching TV.
B. To warn parents of the disadvantages of watching TV.
C. To explain the bad influences that watching TV has on children.
D. To correct parents’ wrong ideas of television’s effect on children.
高一英语阅读理解中等难度题查看答案及解析
The average American child spends three to five hours a day watching TV. In 1961, the average child began to watch television at age three; however, today it is nine months. Yet, most parents think that television has bad influence on their children. For example, in the early 1970s, my parents believed that my bad eyesight was the result of sitting too close to the screen, and they therefore made my stay at least six feet from it. Today, most people have no such worry, but many new ridiculous (荒谬的) sayings have appeared:
*TV makes kids stupid. Many children watch more educational programs when they are pre-schoolers. When they grow up, they can read more books and have much better ideas to solve difficult problems than other children.
*TV makes kids violent. The real story is not so simple. Hundreds of studies show that watching violence on TV makes children more aggressive (好斗的). But a study of over 5,000 children also finds that some positive programs make children kinder. The problem is that kids are increasingly watching shows with violence instead of those suitable for their age.
*Sitting around watching TV makes kids overweight. An experiment finds that when children watch less television, they do lose extra weight; however, reducing their television time does not make them more active. The real problem lies in snacking (吃零食). A widespread habit for kids, and junk-food advertisements.
*TV helps kids get to sleep. The opposite is true. The more television children watch, the more likely they are to have irregular sleep and nap(小睡) patterns. Allowing kids to watch television is part of the problem, not the solution.
1.Which one is the advantage of educational TV programs?
A. They will make children solve difficult problems better than others.
B. they will improve children’s ability to get along with others.
C. They are likely to make children more aggressive.
D. They will make sure of children’s success in the future.
2. Why are children spending much time watching TV likely to be fat?
A. Watching TV makes children lazy and inactive.
B. Children are attracted by the food advertisement on TV.
C. Watching TV doesn’t burn up as much fat as doing sports.
D. Children like to snack while watching TV.
3.What influence does watching TV have on a child’s sleep?
A. Children are likely to sleep deeper after watching TV.
B. Children’s sleep time will be greatly reduced.
C. It will make children form a bad habit of sleeping.
D. It will make children sleep easier.
4.What is the purpose of this text?
A. To increase people’s knowledge of watching TV.
B. To warn parents of the disadvantages of watching TV.
C. To explain the bad influences that watching TV has on children.
D. To correct parents’ wrong ideas of television’s effect on children.
高一英语阅读理解中等难度题查看答案及解析
The average American child spends three to five hours a day watching TV. In 1961, the average child began to watch television at age three; however, today it is nine months. Yet, most parents think that television has a bad influence on their children. For example, in the early 1970s, my parents believed that my bad eyesight was the result of sitting too close to the screen, and they therefore made my stay at least six feet from it. Today, most people have no such worry, but many new ridiculous (荒谬的) sayings have appeared:
*TV makes kids stupid. Many children watch more educational programs when they are pre-schoolers. When they grow up, they can read more books and have much better ideas to solve difficult problems than other children.
*TV makes kids violent. The real story is not so simple. Hundreds of studies show that watching violence on TV makes children more aggressive (好斗的). But a study of over 5,000 children also finds that some positive programs make children kinder. The problem is that kids are increasingly watching shows with violence instead of those suitable for their age.
*Sitting around watching TV makes kids overweight. An experiment finds that when children watch less television, they do lose extra weight; however, reducing their television time does not make them more active. The real problem lies in snacking (吃零食), a widespread habit for kids, and junk-food advertisements.
*TV helps kids get to sleep. The opposite is true. The more television children watch, the more likely they are to have irregular sleep and nap(小睡) patterns. Allowing kids to watch television is part of the problem, not the solution.
1.Which one is the advantage of educational TV programs?
A. They will make children solve difficult problems better than others.
B. They will improve children’s ability to get along with others.
C. They are likely to make children more aggressive.
D. They will make sure of children’s success in the future.
2.Why are children spending much time watching TV likely to be fat?
A. Watching TV makes children lazy and inactive.
B. Children are attracted by the food advertisement on TV.
C. Watching TV doesn’t burn up as much fat as doing sports.
D. Children like to snack while watching TV.
3.What influence does watching TV have on a child’s sleep?
A. Children are likely to sleep deeper after watching TV.
B. Children’s sleep time will be greatly reduced.
C. It will make children form a bad habit of sleeping.
D. It will make children sleep easier.
4.What is the purpose of this text?
A. To increase people’s knowledge of watching TV.
B. To warn parents of the disadvantages of watching TV.
C. To explain the bad influences that watching TV has on children.
D. To correct parents’ wrong ideas of television’s effect on children.
高一英语阅读理解困难题查看答案及解析
The average（平均的）American child spends three to five hours a day watching TV. In 1961, the average child began to watch television at age three; however, today it is nine months. Yet, most parents think that television has bad influence on their children. For example, in the early 1970s, my parents believed that my bad eyesight was the result of sitting too close to the screen, and they therefore made my stay at least six feet from it. Today, most people have no such worry, but many new ridiculous (荒谬的) sayings have appeared:
*TV makes kids stupid. Many children watch more educational programs when they are pre-schoolers. When they grow up, they can read more books and have much better ideas to solve difficult problems than other children.
*TV makes kids violent. The real story is not so simple. Hundreds of studies show that watching violence on TV makes children more aggressive (好斗的). But a study of over 5,000 children also finds that some positive programs make children kinder. The problem is that kids are increasingly watching shows with violence instead of those suitable for their age.
*Sitting around watching TV makes kids overweight. An experiment finds that when children watch less television, they do lose extra weight; however, reducing their television time does not make them more active. The real problem lies in snacking (吃零食). A widespread habit for kids, and junk-food advertisements.
*TV helps kids get to sleep. The opposite is true. The more television children watch, the more likely they are to have irregular sleep and nap (小睡) patterns. Allowing kids to watch television is part of the problem, not the solution.
1.Which one is the advantage of educational TV programs?
A. They will make children solve difficult problems better than others.
B. they will improve children’s ability to get along with others.
C. They are likely to make children more aggressive.
D. They will make sure of children’s success in the future.
2.Why are children spending much time watching TV likely to be fat?
A. Watching TV makes children lazy and inactive.
B. Children are attracted by the food advertisement on TV.
C. Watching TV doesn’t burn up as much fat as doing sports.
D. Children like to snack while watching TV.
3.What influence does watching TV have on a child’s sleep?
A. Children are likely to sleep deeper after watching TV.
B. Children’s sleep time will be greatly reduced.
C. It will make children form a bad habit of sleeping.
D. It will make children sleep easier.
4.What is the purpose of this text?
A. To increase people’s knowledge of watching TV.
B. To warn parents of the disadvantages of watching TV.
C. To explain the bad influences that watching TV has on children.
D. To correct parents’ wrong ideas of television’s effect on children.
高一英语阅读理解中等难度题查看答案及解析
-American office workers spend an average of 52 hours a week at their desks, according to a statistic survey. Some might argue that not all that time is spent working，but still all those hours in windowless offices with artificial light can have an influence.
A few green additions could have a large effect on worker happiness，according to the survey led by Tina Cade from Texas State University.
“We pretty much found out that if you had windows and plants or even if you just had plants in your office, you were more satisfied with your job,” Cade told LiveScience. “We thought it was important for offices because a lot of times people are looking for ways to keep employees happy and do all these expensive things like building a gym. Maybe for less investment they could put in a few plants in important places.”
The team surveyed 450 office workers in Texas and the Midwest，asking questions about job satisfaction and the work environments. When asked about their overall life quality,82 said they felt “content” or “very happy”. Only 69 percent of those who work with plants but without windows，and 60 percent of those who have windows but no plants, said they felt this way.
The group of people who work without plants or windows were the most dissatisfied，with only 58 percent of them saying that overall they were “content” or “very happy”. While no one who works with plants，windows，or both reported they felt “miserable”, 0.8 percent of those who work in offices without either said they were “miserable”. “I was really surprised that having a plant in your office appeared to be more beneficial than having a window in your office,” Cade said. “Everybody says, ‘I need a window!’ but actually it seemed like a plant could be a suitable alternative.”
1.What does the passage mainly tell us?
| A．Green plants can increase job satisfaction. |
| B．An easier way to increase job satisfaction. |
| C．What the best working environment is. |
| D．Who are happy with their job environment. |
2.Among the 450 people surveyed, ________.
| A．69 percent have plants in their offices |
| B．60 percent have windows in their walls |
| C．0.8 percent of them feel dissatisfied |
| D．about 18 percent of them are satisfied |
3. According to the survey，the group of people who work without plants or windows ______.
| A．didn’t feel content at all |
| B．all suffered from work pressure |
| C．were the most dissatisfied |
| D．worked with low efficiency |
4. Which of the following statement is true?
| A．The employers want to do little to keep employees happy. |
| B．Sometimes it doesn’t need much to increase job happiness. |
| C．A gym contributes less to job happiness than green plants. |
| D．Employers have tried every means to increase job happiness. |
高一英语阅读理解困难题查看答案及解析