More and more scientific experiments prove that physical exercise can reduce the dangers of some illnesses in middle-aged persons.Exercise strengthens the heart muscle,reduces blood pressure and help to prevent muscles from changing into fat.Physical exercise is just as important for children.
Exercise and food affect growing speed in young lab animals.Baby mice start running as soon as they are big enough to use an exercise wheel in their cage.If they get extra food and run a lot,they will grow as much as 1.5 times bigger than normal.
The same differences in growing speed might be found between active and inactive children.Physical exercise helps active children grow faster than inactive children.One experiment shows that the brains of the mice that had enough exercise weighed about 3%more than those of the mice that did not exercise The mice that exercised are much quicker to learn doing new exercise than the mice that did not exercise.
The results of the experiments suppose the theory that exercise can help babies learn to talk and walk sooner than expected.
The good effects of physical exercise are not limited to children and middle-aged people.Exercise continues to be an important part of our lives after we grow old.For example,people over 50 years old begin to lose calcium(钙) from their bones,which get weaker and can break easily.Physical exercise,however,helps to strengthen the bones and to prevent them from losing calcium.Of course,old people can take medicines to prevent themselves from suffering from losing calcium.But the medicines they take increase the chance of developing some kind of cancer(癌).So physical exercise is a much safer treatment(治疗).
1.From the passage we know that .
A.mice need to eat more and exercise more |
B.children need more exercise than other people |
C.old people like to take medicine to treat their illnesses |
D.middle-aged people are easy to get fat |
2.Active children than inactive children.
A.enjoy walking more |
B.are cleverer and healthier |
C.are stronger but more foolish |
D.are cleverer but weaker |
3.Why are the bones of old people easy to break according to the passage?
A.Because they are easy to become ill. |
B.Because they eat less than other people. |
C.Because they have less exercise than other people. |
D.there is less calcium in their bones than in those of other people. |
4.The passage tells people that .
A.only middle-aged persons can benefit from physical exercise |
B.physical exercise can do good to both the middle-aged and children |
C.people of different ages can all benefit from physical exercise |
D.physical exercise is the safest treatment for losing calcium |
高三英语阅读理解困难题
More and more scientific experiments prove that physical exercise can reduce the dangers of some illnesses in middle-aged persons.Exercise strengthens the heart muscle,reduces blood pressure and help to prevent muscles from changing into fat.Physical exercise is just as important for children.
Exercise and food affect growing speed in young lab animals.Baby mice start running as soon as they are big enough to use an exercise wheel in their cage.If they get extra food and run a lot,they will grow as much as 1.5 times bigger than normal.
The same differences in growing speed might be found between active and inactive children.Physical exercise helps active children grow faster than inactive children.One experiment shows that the brains of the mice that had enough exercise weighed about 3%more than those of the mice that did not exercise The mice that exercised are much quicker to learn doing new exercise than the mice that did not exercise.
The results of the experiments suppose the theory that exercise can help babies learn to talk and walk sooner than expected.
The good effects of physical exercise are not limited to children and middle-aged people.Exercise continues to be an important part of our lives after we grow old.For example,people over 50 years old begin to lose calcium(钙) from their bones,which get weaker and can break easily.Physical exercise,however,helps to strengthen the bones and to prevent them from losing calcium.Of course,old people can take medicines to prevent themselves from suffering from losing calcium.But the medicines they take increase the chance of developing some kind of cancer(癌).So physical exercise is a much safer treatment(治疗).
1.From the passage we know that .
A.mice need to eat more and exercise more |
B.children need more exercise than other people |
C.old people like to take medicine to treat their illnesses |
D.middle-aged people are easy to get fat |
2.Active children than inactive children.
A.enjoy walking more |
B.are cleverer and healthier |
C.are stronger but more foolish |
D.are cleverer but weaker |
3.Why are the bones of old people easy to break according to the passage?
A.Because they are easy to become ill. |
B.Because they eat less than other people. |
C.Because they have less exercise than other people. |
D.there is less calcium in their bones than in those of other people. |
4.The passage tells people that .
A.only middle-aged persons can benefit from physical exercise |
B.physical exercise can do good to both the middle-aged and children |
C.people of different ages can all benefit from physical exercise |
D.physical exercise is the safest treatment for losing calcium |
高三英语阅读理解困难题查看答案及解析
Common sense would tell us that physically active children may be more likely to become active and healthy adults.
In the United States, elementary and middle schools are advised to give students two and a half hours of physical activity a week. That is what the Centers for Disease Control and Prevention and the American Heart Association recommend. They say high schools should provide about four hours of physical activity each week.
Yet many schools across the country have reduced their physical education programs. Just this week, a study reported that lifeexpectancy has fallen or is no longer increasing in some parts of the United States. The situation is worst among poor people in the southern states, and especially women. Public health researchers say it is largely the result of increases in fatness, smoking and high blood pressure. They also blame differences in health services around the country.
In 2006, a study found that only four percent of primary schools provided daily physical education all year for all grades. This was true of eight percent of middle schools and two percent of high schools. The study also found that twenty-two percent of all schools did not require students to take any P.E.
Charlene Burgeson , a health expert says one problem for P.E. teachers is that schools are under pressure to put more time into academic subjects. Also, parents may agree that children need exercise in school. Yet many parents today still have bad memories of being chosen last for teams because teachers favored the good athletes in class.
But experts say P.E. classes have changed. They say the goal has moved away from competition and toward personal performance, as a way to build a lifetime of activity. These days, teachers often lead activities like weight training and yoga.
Some parents like the idea of avoiding competitive sports in P.E. class. Yet others surely dislike that idea. In the end, schools may find themselves in a no-win situation.
1.The underlined word “expectancy” in Paragraph 3 probably means “”
A.quality B.length C.exception D.depth
2.According to the passage which of the following may not lead to poor health?
A.Fatness. B.Smoking C.High blood pressure. D.Health service
3.What can be inferred after you read this passage?
A.Physical activities are becoming more and more popular in American schools.
B.All the schools provided daily physical education all year for all students.
C.Parents think children need physical education for their bad memories.
D.Students spent less time on physical education for academic pressure.
4.What is the main idea about this passage?
A.P.E. is the most important subject for all students.
B.P.E has changed its goal for some reasons in America.
C.It introduces us the present situation of P.E in American schools and its cause.
D.P.E can help students improve their academic subjects.
高三英语阅读理解中等难度题查看答案及解析
The results of the experiment proved to be very good, _________ was more than we expected.
A. which B. what
C. that D. this
高三英语单项填空中等难度题查看答案及解析
The results of the experiment proved to be very good, _________ was more than we expected.
A. which B. what C. that D. this
高三英语单项填空中等难度题查看答案及解析
The surprising experiment I am about to describe proves that air is all around you and that it proves down upon you. Air pressure is a wonderful force. When you swim underwater, you can feel water push down your body. The air all around you does the same. However, your body is so used to it that you do not notice this. The pressure is caused by a layer of air called the atmosphere. This layer surrounds the Earth, extending to about five kilometers above the Earth’s surface.
The following experiment is an easy one that you can do at home. But make sure that you are supervised, because you will need to use matches. Now foe the experiment!
What you need
·A hard-boiled egg without the shell
·A bottle with a neck slightly smaller than the egg
·A piece of paper
·A match
Metheod
1) Check that the paper will sit firmly on the neck of the bottle.
2) Tear the paper into strips and put the strips into the bottle.
3) Light the paper by dropping a burning match into the bottle.
4) Quickly sit the egg on the neck of the bottle.
Result
Astonishingly, the egg will be sucked into the bottle. Your friends will be amazed when you show them the experiment. But be careful when you handle matches.
Why it happened
As the paper burns, it needs oxygen and uses up the oxygen (air) in the bottle. The egg acts as a seal in the neck of the bottle, so no more air can get inside. This reduces the air pressure inside the bottle. The air pressure must equalize, so more air from outside must enter the bottle. The outside air pressure against the egg and then the egg is pushed into the bottle! The proves that air is all around and that it is pressing down on it.
1.Why is there the need to take care when you are doing the experiment?
A. The bottle could break.
B. You need to light the paper with a match.
C. The egg needs to be shelled.
D. The egg has to be perfectly placed on the neck of the bottle.
2.In the experiment, the burning inside the bottle can___.
A. equalize the air pressure inside and outside
B. make a seal in the neck of the bottle
C. finish up the oxygen inside the bottle
D. produce more oxygen inside the bottle
3.How did the egg put into the bottle?
A. The oxygen inside the bottle sucked the egg in.
B. It became salt without the shell.
C. The neck of the bottle was wide enough.
D. The outside air pressure forced it into the bottle.
4.The experiment is carried cut to prove ______.
A. water pushes on your body when you swim underwater.
B. the earth is surrounded by a layer of air called the atmosphere.
C. the pressure of air around us has a powerful force.
D. the air pressure is not equalized around us.
高三英语阅读理解中等难度题查看答案及解析
The surprising experiment I am about to describe proves that air is all around you and that it proves down upon you.Air pressure is a wonderful force.When you swim underwater, you can feel water push down your body.The air all around you does the same.However, your body is so used to it that you do not notice this.The pressure is caused by a layer of air called the atmosphere.This layer surrounds the Earth, extending to about five kilometers above the Earth's surface.
The following experiment is an easy one that you can do at home.But make sure that you are supervised, because you will need to use matches.
What you need
·A hard-boiled egg without the shell
·A bottle with a neck slightly smaller than the egg
·A piece of paper
·A match
Method
1)Check that the paper will sit firmly on the neck of the bottle.
2)Tear the paper into strips and put the strips into the bottle.
3)Light the paper by dropping a burning match into the bottle.
4)Quickly sit the egg on the neck of the bottle.
Result
Astonishingly, the egg will be sucked into the bottle.Your friends will be amazed when you show them the experiment.But be careful when you handle matches.
Why it happened
As the paper burns, it needs oxygen and uses up the oxygen (air)in the bottle.The egg acts as a seal in the neck of the bottle, so no more air can get inside.This reduces the air pressure inside the bottle.The air pressure must equalize, so more air from outside must enter the bottle.The outside air presses against the egg and then the egg is pushed into the bottle! That proves that air is all around and that it is pressing down on it.
1.Why is there the need to take care when you are doing the experiment?
A.The bottle could break.
B.You need to light the paper with a match.
C.The egg needs to be shelled.
D.The egg has to be perfectly placed on the neck of the bottle.
2.In the experiment, the burning inside the bottle can__.
A.equalize the air pressure inside and outside
B.make a seal in the neck of the bottle
C.finish up the oxygen inside the bottle
D.produce more oxygen inside the bottle
3.How did the egg put into the bottle?
A.The oxygen inside the bottle sucked the egg in.
B.It became salt without the shell.
C.The neck of the bottle was wide enough.
D.The outside air pressure forced it into the bottle.
4.The experiment is carried out to prove ____.
A.water pushes on your body when you swim underwater
B.the earth is surrounded by a layer of air called the atmosphere
C.the pressure of air around us has a powerful force
D.the air pressure is not equalized around us
高三英语阅读理解简单题查看答案及解析
Do you want to live another 100 years or more? Some experts say that scientific advances will one day enable humans to last tens of years beyond what is now seen as the natural limit of the human life span.
"I think we are knocking at the door of immortality(永生)," said Michael Zey, a Montclair State University business professor and author of two books on the future. "I think by 2075 we will see it and that’s a conservative estimate".
At the conference in San Francisco, Donald Louria, a professor at New Jersey Medical School in Newark said advances in using genes as well as nanotechnology(纳米技术)make it likely that humans will live in the future beyond what has been possible in the past. "There is a great push so that people can live from 120 to 180 years," he said. "Some have suggested that there is no limit and that people could live to 200 or 300 or 500 years."
However, many scientists who specialize in ageing are doubtful about it and say the human body is just not designed to last about 120 years. Even with healthier lifestyles and less disease, they say failure of the brain and organs will finally lead all humans to death.
Scientists also differ on what kind of life the super aged might live. "It remains to be seen if you pass 120, you know; could you be healthy enough to have good quality of life?" said Leonard Pooh, director of the University of Georgia Gerontology(老龄学) Center. "At present people who could get to that point are not in good health at all."
1.By saying "we are knocking at the door of immortality", Michael Zey means ________.
A.they believe that there is no limit of living
B.they are sure to find the truth about long living
C.they have got some ideas about living forever
D.they are able to make people live past the present life span
2.Donald Louria's attitude towards long living is that ________.
A.people can live from 120 to 180 years
B.it is still doubtful how long humans can live
C.the human body is designed to last about 120 years
D.it is possible for humans to live longer in the future
3.The underlined "it"(paragraph 4)refers to ________.
A.a great push
B.the idea of living beyond the present life span
C.the idea of living from 200 to 300 years
D.the conservative estimate
4.What would be the best title for this text?
A.Living Longer or Not
B.Science, Technology and Long Living
C.No Limit for Human Life
D.Healthy Lifestyle and Long Living
高三英语阅读理解中等难度题查看答案及解析
The wonderful experiment I am going to introduce proves that air is just all around and that it presses down upon us. Air pressure is a wonderful force. When you swim underwater, you can feel water push down your body. The air all around you does the same. However, your body is so used to it that you do not notice this. The pressure is caused by a layer of air called the atmosphere. This layer surrounds the Earth, extending to about five kilometers above the Earth’s surface.
The following experiment is an easy one that you can do at home. But make sure that you are supervised, because you will need to use matches. Now for the experiment!
What you need:
·A hard-boiled egg without the shell
·A bottle with a neck slightly smaller than the egg
·A piece of paper
·A match
Method:
1) Check that the paper will sit firmly on the neck of the bottle.
2) Tear the paper into strips and put the strips into the bottle.
3) Light the paper by dropping a burning match into the bottle.
4)Quickly sit the egg on the neck of the bottle.
Result:
Astonishingly, the egg will be sucked into the bottle. Your friends will be amazed when you show them the experiment. But be careful when you handle matches.
Why it happened
As the paper burns, it needs oxygen and uses up the oxygen(air)in the bottle. The egg acts as a seal in the neck of the bottle, so no more air can get inside. This reduces the air pressure inside the bottle. The air pressure must equalize, so more air from outside must enter the bottle. The outside air pressure against the egg and then the egg is pushed into the bottle! This proves that air is all around and that it is pressing down on it.
1.Why is there the need to take care when you are doing the experiment?
A. The bottle could break.
B. You need to light the paper with a match.
C. The egg needs to be shelled.
D. The egg has to be perfectly placed on the neck of the bottle.
2.In the experiment, the burning inside the bottle can ________.
A. equalize the air pressure inside and outside
B. make a seal in the neck of the bottle
C. finish up the oxygen inside the bottle
D. produce more oxygen inside the bottle
3.How was the egg put into the bottle?
A. The oxygen inside the bottle sucked the egg in.
B. It became salt without the shell.
C. The neck of the bottle was wide enough.
D. The outside air pressure forced it into the bottle.
高三英语长对话或独白中等难度题查看答案及解析
The saying that children don’t like reading any more has been proved untrue. A new study finds that 75 percent of kids between five and 17 say that although they love technology, they still want to read books.
The Kids & Family Reading Report also says that 62 percent of kids prefer reading printed books rather than those on a computer.At the same time, those who search an author’s website or use the Internet to find books by a particular author, are more likely to read books for fun every day.
The study also once again proves that the time kids spend reading books for fun decreases after the age of eight and continues to drop through the teen years.The report is a follow-up to a 2006 study.But this time the focus is on the role of technology and when kids’ interest in reading starts to drop.
“Despite the fact that after the age of eight more children go online daily than read for fun daily, high frequency Internet users are more likely to read books for fun every day,” says Heather Carter, a writer of the report.
One in four kids between five and 17 say they read books for fun every day and more than half of kids say they read books for fun at least two to three times a week.One of the key reasons kids say they don’t read more often is that they have trouble finding books they like - a requirement that parents underestimate(低估).
The study also finds that parents have a strong influence on kids’ reading, but only about half of all parents begin reading to their kids before their first birthday.The percent of children who are read to every day drops from 38 percent among five-to eight-year-olds to 23 percent among nine-to 11-year-olds - exactly the same time that kids’ daily reading for fun starts to drop.
“Parents’ engagement in their child’s reading from birth all the way through the teen years can have a great influence on how often their children read and how much they enjoy reading,” adds Carter.
1.What can we learn from the text?
A.Children don’t like reading any more after the age of 8.
B.Most children like reading as well as going online.
C.All kids like reading e – books instead of printed ones.
D.Most children like going online instead of reading.
2.It can be inferred from the passage that .
A.the study of kids’ reading has been made before
B.most parents begin reading to their kids from their birth
C.all kids like to get information using the Internet
D.nowadays all children still like to read books
3.Which of the following is true according to the text?
A.The kids who often go online don’t like reading books.
B.Parents should teach their kids reading from an early age.
C.Sometimes it is difficult for kids to get the books they like.
D.When kids get older, parents spend more time with them.
4.According to the text, contributes a lot to children’s interest in reading.
A.the Internet B.parents’ engagement
C.short supply of books D.new technology
5.What’s the best title of the passage?
A.Do kids still like reading? B.Kids’ interest in reading drops
C.New technology on kids’ reading D.Parents’ influence on kids’ reading
高三英语阅读理解中等难度题查看答案及解析
A recent experiment proves that bees can save time and energy when they fly around to different flowers.
Dr Nigel Raine, from the Royal Holloway University of London, has always been interested in finding out why animal behave like they do. He is also interested in bees. It was not a surprise when he and some other scientists from Queen Mary University of London discovered that bees can quickly solve a problem that takes computers many days.
Flowers make pollen (花粉), and when bees visit them, they carry the pollen to other flowers. The plants need the pollen to make seeds that will grow. Dr Raine notes that we get a lot of our food from plants, so it is important to know how the bees move around and take the pollen between flowers. The scientists wanted to examine the journey that the bees take and how they save energy when they do this. They completed the experiment on the roof of Queen Mary University, using artificial flowers and a large amount of nectar, a sweet liquid produced by flowers. They taught one bee to visit all the flowers in one place at the same time. When the bee got to know the location of the flowers well, they saw how it flew around and returned home with the nectar. After this, they changed the locations of the flowers. The scientists thought the bee would follow the route it knew already. This would mean that it followed a longer route than it needed to, and so it would use more energy. They watched the bee carefully as it travelled between the flowers in their new location, and they made notes. But in the experiment, the bee changed its route and flew a shorter distance.
The problem that the bee solved is similar to a maths puzzle called the ‘travelling salesman problem’. A salesman who goes to different places to sell things wants to travel the shortest distance. But he has to calculate the length of many possible routes to know which one is the shortest. A computer can calculate this but the experiment shows bees can do the same calculation quickly with a tiny brain. Scientists are very interested in how they do this. It would help us to understand how pollen is moved around. In addition, if they find this out, it could help us to improve communication networks. This might help humans to reduce traffic jams when there is an accident, for example.
1.The underlined word “nectar” in the third paragraph means_________.
A. powder B. honey
C. vitamin D. water
2.The researcher’s experiment found _________.
A. bees could manage to avoid accidents
B. bees showed signs of being very intelligent
C. bees could take the same route they knew before
D. bees were faster at calculating distance than computers
3.According to the last paragraph, the next step of the study is to discover how _______.
A. pollen is moved around
B. traffic jams can be reduced
C. bees can calculate so quickly
D. communication networks are improved
4.Where does this passage probably come from?
A. A novel. B. A website.
C. A science magazine. D. An advertisement.
高三英语阅读理解中等难度题查看答案及解析