Below is a selection from a popular science book.
If blood is red, why are veins (静脉) blue?
Actually, veins are not blue at all. They are more of a clear, yellowish color. Although blood looks red when it’s outside the body, when it’s sitting in a vein near the surface of the skin, it’s more of a dark reddish purple color. At the right depth, these blood-filled veins reflect less red light than the surrounding skin, making them look blue by comparison.
Which works harder, your heart or your brain?
That kind of depends on whether you’re busy thinking or busy exercising. Your heart works up to three times harder during exercise, and shifts enough blood over a lifetime to fill a supertanker(超级油轮). But, in the long run, your brain probably tips it, because even when you’re sitting still your brain is using twice as much energy as your heart, and it takes four to five times as much blood to feed it.
Why do teeth fall out, and why don’t they grow back in grown-ups?
Baby (or “milk”) teeth do not last long; they fall out to make bigger room for bigger, stronger adult teeth later on. Adult teeth fall out when they become damaged, decayed(腐烂)and infected by bacteria. Once this second set of teeth has grown in, you’re done. When they’re gone, they are gone. This is because nature figures you’re set for life, and what controls regrowth of your teeth switches off.
Do old people shrink(收缩)as they age?
Yes and no. Many people do get shorter as they age. But, when they do, it isn’t because they’re shrinking all over. They simply lose height as their spine (脊柱) becomes shorter and more curved due to disuse and the effect of gravity (重力). Many (but not all) men and women do lose height as they get older. Men lose an average of 3-4 cm in height as they age, while women may lose 5 cm or more. If you live to be 200 years old, would you keep shrinking till you were, like 60 cm tall, like a little boy again? No, because old people don’t really shrink! It is not that they are growing backwards—their legs, arms and backbones getting shorter. When they do get shorter, it’s because the spine has shortened a little. Or, more often, become more bent and curved.
Why does spinning make you dizzy?
Because your brain gets confused between what you’re seeing and what you’re feeling. The brain senses that you’re spinning using special gravity-and-motion-sensing organs in your inner ear, which work together with your eyes to keep your vision balance stable. But when you suddenly stop spinning the system goes out of control, and your brain thinks you’re moving while you’re not.
Where do feelings and emotions come from?
Mostly from an ancient part of the brain called the limbic system(边缘系统). All mammals have this brain area — from mice to dogs, cats, and humans. So all mammals feel basic emotions like fear, pain and pleasure. But since human feelings also involve other, newer bits of the brain, we feel more complex emotions than any other animal on this planet.
If exercise wears you out, how can it be good for you?
1.What is the color of blood in a vein near the surface of the skin?
A. Blue B. Light yellow
C. Red D. Dark reddish purple
2. Why do some old people look a little shrunken as they age?
A. Because their spine is in active use.
B. Because they are more easily affected by gravity.
C. Because they keep growing backwards.
D. Because their spine becomes more bent.
3.Which of the following statements about our brain is true?
A. In the long run, our brain probably works harder than our heart.
B. When our brain senses the spinning, we will feel dizzy.
C. The brains of the other mammals are as complex as those of humans.
D. Our feelings and emotions come from the most developed area in our brain.
4. What is the main purpose of the selection?
A. To give advice on how to stay healthy.
B. To provide information about our body.
C. To challenge new findings in medical research.
D. To report the latest discoveries in medical science.
高一英语阅读理解中等难度题
Below is a selection from a popular science book.
If blood is red, why are veins (静脉) blue?
Actually, veins are not blue at all. They are more of a clear, yellowish color. Although blood looks red when it’s outside the body, when it’s sitting in a vein near the surface of the skin, it’s more of a dark reddish purple color. At the right depth, these blood-filled veins reflect less red light than the surrounding skin, making them look blue by comparison.
Which works harder, your heart or your brain?
That kind of depends on whether you’re busy thinking or busy exercising. Your heart works up to three times harder during exercise, and shifts enough blood over a lifetime to fill a supertanker(超级油轮). But, in the long run, your brain probably tips it, because even when you’re sitting still your brain is using twice as much energy as your heart, and it takes four to five times as much blood to feed it.
Why do teeth fall out, and why don’t they grow back in grown-ups?
Baby (or “milk”) teeth do not last long; they fall out to make bigger room for bigger, stronger adult teeth later on. Adult teeth fall out when they become damaged, decayed(腐烂)and infected by bacteria. Once this second set of teeth has grown in, you’re done. When they’re gone, they are gone. This is because nature figures you’re set for life, and what controls regrowth of your teeth switches off.
Do old people shrink(收缩)as they age?
Yes and no. Many people do get shorter as they age. But, when they do, it isn’t because they’re shrinking all over. They simply lose height as their spine (脊柱) becomes shorter and more curved due to disuse and the effect of gravity (重力). Many (but not all) men and women do lose height as they get older. Men lose an average of 3-4 cm in height as they age, while women may lose 5 cm or more. If you live to be 200 years old, would you keep shrinking till you were, like 60 cm tall, like a little boy again? No, because old people don’t really shrink! It is not that they are growing backwards—their legs, arms and backbones getting shorter. When they do get shorter, it’s because the spine has shortened a little. Or, more often, become more bent and curved.
Why does spinning make you dizzy?
Because your brain gets confused between what you’re seeing and what you’re feeling. The brain senses that you’re spinning using special gravity-and-motion-sensing organs in your inner ear, which work together with your eyes to keep your vision balance stable. But when you suddenly stop spinning the system goes out of control, and your brain thinks you’re moving while you’re not.
Where do feelings and emotions come from?
Mostly from an ancient part of the brain called the limbic system(边缘系统). All mammals have this brain area — from mice to dogs, cats, and humans. So all mammals feel basic emotions like fear, pain and pleasure. But since human feelings also involve other, newer bits of the brain, we feel more complex emotions than any other animal on this planet.
If exercise wears you out, how can it be good for you?
1.What is the color of blood in a vein near the surface of the skin?
A. Blue B. Light yellow
C. Red D. Dark reddish purple
2. Why do some old people look a little shrunken as they age?
A. Because their spine is in active use.
B. Because they are more easily affected by gravity.
C. Because they keep growing backwards.
D. Because their spine becomes more bent.
3.Which of the following statements about our brain is true?
A. In the long run, our brain probably works harder than our heart.
B. When our brain senses the spinning, we will feel dizzy.
C. The brains of the other mammals are as complex as those of humans.
D. Our feelings and emotions come from the most developed area in our brain.
4. What is the main purpose of the selection?
A. To give advice on how to stay healthy.
B. To provide information about our body.
C. To challenge new findings in medical research.
D. To report the latest discoveries in medical science.
高一英语阅读理解中等难度题查看答案及解析
Below is a selection from a popular science book.
If blood is red, why are veins(静脉)blue?
Actually, veins are not blue at all. They are more of a clear, yellowish colour. Although blood looks red when it’s outside the body, when it’s sitting in a vein near the surface of the skin, it’s more of a dark reddish purple colour. At the right depth, these blood-filled veins reflect less and light than the surrounding skin, making them look blue by comparison.
Which works harder, your heart or your brain?
That kind of depends on whether you are busy thinking or busy exercising. Your heart works up to three times harder during exercise, and shifts enough blood over a lifetime to fill a supertanker. But, in the long run, your brain probably tips it, because even when you’re sitting still your brain is using twice as much energy as your heart, and it takes four to five times as much blood to feed it.
Do old people shrink as they age?
Yes and no. Many people do get shorter as they age. But, when they do, it isn’t because they’re shrinking all over. They simply lose height as their spine(脊柱)becomes shorter and more curved due to disuse and the effects of gravity(重力). Many (but not all) men and women do lose height as they get older. Men lose an average of 3-4 cm in height as they age, while women may lose 5 cm or more. If you live to be 200 years old, would you keep shrinking till you were, like 60 cm tall, like a little boy again? No, because old people don’t really shrink! It is not that they are growing backwards – their legs, arms and backbones getting shorter. When they do get shorter, it’s because the spine has shortened a little. Or, more often, become more bait and curved.
Why does spinning make you dizzy(眩晕的)?
Because your brain gets confused between what you’re seeing and what you’re feeling. The brain senses that you’re spinning using special gravity-and-motion-sensing organs in your inner ear, which work together with your eyes to keep your vision and balance stable. But when you suddenly stop spinning the system goes out of control, and your brain thinks you’re moving while you’re not!
Where do feelings and emotions come from?
Mostly from an ancient part of the brain called the limbic system. All mammals have this brain area – from mice to dogs, cats, and humans. So all mammals feel basic emotions like fear, pain and pleasure. But since human feelings also involve other. newer bits of the brain, we feel more complex emotions than any other animal on the planet.
If exercise wears you out, how can it be good for you?
Because our bodies adapt to everything we do to them. And as far as your body is concerned, it’s use it, or lose it”! It’s not that exercise makes you healthy; it’s more that a lack of exercise leaves your body weak and easily affected by disease.
1.What is the colour of blood in a vein near the surface of the skin?
A. Blue. B. Light yellow.
C. Red. D. Dark reddish purple.
2.Why do some old people look a little shrunken as they age?
A. Because their spine is in active use.
B. Because they are more easily affected by gravity.
C. Because they keep growing backwards.
D. Because their spine becomes more bent.
3.Which of the following statements about our brain is true?
A. In the long run, our brain probably works harder than our heart.
B. When our brain senses the spinning, we will fell dizzy.
C. The brains of the other mammals are as complex as those of humans.
D. Our feelings and emotions come from the most developed area in our brain.
4.What is the main purpose of the selection?
A. To give advice on how to stay healthy.
B. To provide information about our body.
C. To challenge new findings in medical research.
D. To report the latest discoveries in medical science.
高一英语阅读理解中等难度题查看答案及解析
Below is a selection from a popular science book.
If blood is red, why are veins(静脉)blue?
Actually, veins are not blue at all. They are more of a clear, yellowish colour. Although blood looks red when it’s outside the body, when it’s sitting in a vein near the surface of the skin, it’s more of a dark reddish purple colour. At the right depth, these blood-filled veins reflect less red light than the surrounding skin, making them look blue by comparison.
Which works harder, your heart or your brain?
That kind of depends on whether you’re busy thinking or busy exercising. Your heart works up to three times harder during exercise, and shifts enough blood over a lifetime to fill a supertanker. But, in the long run, your brain probably tips it, because even when you’re sitting still your brain is using twice as much as your heart, and it takes four to five times as much blood to feed it.
Why do teeth fall out, and why don’t they grow back in grown-up?
Baby (or “milk”) teeth do not last long; they fall out to make room for bigger, stronger adult teeth later on. Adult teeth fall out when they become damaged, decayed and infected by bacteria. Once this second set of teeth has grown in, you’re done. When they’re gone, they’re gone. This is because nature figures you’re set for life, and what controls regrowth of your teeth switches off.
Do old people shrink as they age?
Yes and no. Many people do get shorter as they age. But, when they do, it isn’t because they’re shrinking all over. They simply lose height as their spine(脊柱)becomes shorter and more curved due to disuse and the effects of gravity(重力). Many (but not all) men and women do lose height as they get older. Men lose an average of 3—4 cm in height as they age, while women may lose 5 cm or more. If you live to be 200 years old, would you keep shrinking till you were, like 60 cm tall, like a little boy again? No, because old people don’t really shrink! It is not that they are growing backwards—their legs, arms and backbones getting shorter. When they do get shorter, it’s because the spine has shortened a little. Or, more often, become more bent and curved.
Why does spinning make you dizzy(眩晕的)?
Because your brain gets confused between what you’re seeing and what you’re feeling. The brain senses that you’re spinning using special gravity-and-motion-sensing organs in your inner ear, which work together with your eyes to keep your vision and balance stable. But, when you suddenly stop spinning the system goes out control, and your brain thinks you’re moving while you’re not!
Where do feelings and emotions come from?
Mostly from an ancient part of the brain called the limbic system. All mammals have this brain area—from mice to dogs, cats, and humans. So all mammals feel basic emotions like fear, pain and pleasure. But since human feelings also involve other, newer bits of the brain, we feel more complex emotions than any other animals on the planet.
If exercise wears you out, how can it be good for you?
Because our bodies adapt to everything we do to them. And as far as your body is concerned, it’s “use it, or lose it”! It’s not that exercise makes you healthy; it’s more that a lack of exercise leaves your body weak and easily affected by disease.
1.What is the colour of blood in a vein near the surface of the skin?
A. Blue B. Dark reddish purple
C. Red D. Light yellow
2.Why do some old people look a little shrunken as they age?
A. Because their spine become more bent.
B. Because they are more easily affected by gravity.
C. Because they keep growing backwards.
D. Because their spine is in active use.
3.Which of the following statements about our brain is true?
A. The brains of the other mammals are as complex as those of humans.
B. When our brain senses the spinning, we will feel dizzy.
C. In the long run, our brain probably works harder than our heart.
D. Our feelings and emotions come from the most developed area in our brain.
4.. In this article, we can know except _____.
A. it takes four to five times as much blood to feed our brain as to feed our heart.
B. when adult teeth are gone, they cannot grow back.
C. the reason why spinning make us dizzy.
D. how we can grow taller.
5. What is the main purpose of the selection?
A. To give advice on how to stay healthy.
B. To report the latest discoveries in medical science.
C. To challenge new findings in medical research.
D. To provide information about our body.
高一英语阅读理解中等难度题查看答案及解析
We should consider the students’ request that the school library_______ more books on popular science.
A. provide B. was provided C. provided D. should be provided
高一英语单项填空中等难度题查看答案及解析
学校图书馆需要购置一批新书,现向学生征求意见。假如你是李华,请你用英语给图书馆王老师写一封信,推荐科普类图书(popular science books)和文学类图书(literary books),并分别说明推荐理由。
参考词汇:自然原理:principles of nature, 科学发现:scientific discoveries,伟大思想:great thoughts.
注意:100词左右,开头已给,不计入总词数。
Dear Mr. Wang,
Knowing that our library is going to buy books, …
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours,
Li Hua
高一英语提纲类作文中等难度题查看答案及解析
学校图书馆需要购置一批新书,现向学生征求意见。假如你是李华,请你用英语给图书馆王老师写一封信,推荐科普类图书(popular science books)和文学类图书(literary books),并分别说明推荐理由。
注意:100词左右,结尾已给,不计入总词数。
Dear Mr. Wang,
Knowing that our library is going to buy books, …
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
______________________________________________________________________________
I’d appreciate it if you could take my recommendation into account.
Yours,
Li Hua
高一英语开放性作文困难题查看答案及解析
Do you know blood types?
Special care must be taken in selecting new blood for a badly injured person, who would be killed by the transfusion (输血) if the blood is too different from his own.
There are four basic types of blood A. B. A B. and O. Blood type, like hair and height, comes from parents. Basically, A and B can not be mixed. AB, sometimes called the universal recipient (万能受血者), may receive A or B,. O type, often called the universal donor (万能输血者), gives his blood to any other group. Patients usually receive nothing, but salt or plasma (血浆) until their blood can be matched as exactly as possible in the blood bank of a hospital. There is a relationship between your blood type and your nationality (国籍). Among Europeans, about 42 % have type A while 45 % have type O. The fewest is the type B.
1.Which of the following show the correct relationship in blood transfusion ("→"means giving blood to...)?
A. B. C. D.
2.Usually person who has been injured and lost too much blood should be given a blood transfusion______.
A.after he receives salt and plasma B.before he feels uncomfortable
C.when the new blood fits his body D.as soon as accident happens
3.From this passage we can know that among Europeans ______ 13 % have the type B.
A. about B. no more than C. less than D. at most
高一英语阅读理解中等难度题查看答案及解析
From a plane we can see the fields, cities, mountains or seas below. If we go into space, we see more and more of the earth. People and man-made satellites have been sent out into space to look at the earth carefully and people have learnt more about the earth in the last years.
The sea looks very beautiful when the sun is shining on it. But it can be very terrible when there is a strong wind.
The sea is very big, it nearly covers three quarters of the earth. The sea is also very deep in some places. There is one place in the sea is about 11 kilometres deep. The highest mountain in the world is about 9 kilometres high. If that mountain was put into the sea at that place, there would be still 2 kilometres of water above it!
In most parts of the sea, there are many kinds of fishes and plants. Some live near the top of the sea. Others live deep down. There are also a lot of small living things, and lots of fishes live by eating them.
The sea can be very cold. The further people go down, the sea becomes colder and colder. At one time only some men could go down into the deep sea. But, in 1970, five women scientists lived in the deep sea for fourteen days.
1.The sea covers about _________ of the earth.
A.1/3 B.1/4 C.1/2 D.3/4
2._________ are not mentioned in this passage.
A.Fishes B.Plants
C.Islands D.Living things
3.Which of the following is NOT true?
A.The sea is usually beautiful when the sun is shining.
B.The sea is always very terrible when the wind blows hard.
C.The highest mountain is in the deepest place of the sea.
D.The deeper the people go into the sea, the colder they will feel.
高一英语阅读理解中等难度题查看答案及解析
From a plane we can see the fields, cities, mountains or seas below.If we go into space, we see more and more of the earth.People and man-made satellites have been sent out into space to look at the earth carefully and people have learnt more about the earth in the last years.
The sea looks very beautiful when the sun is shining on it.But it can be very terrible when there is a strong wind.
The sea is very big, it nearly covers three quarters of the earth.The sea is also very deep in some places.There is one place in the sea is about 11 kilometres deep.The highest mountain in the world is about 9 kilometres high.If that mountain was put into the sea at that place, there would be still 2 kilometres of water above it!
In most parts of the sea, there are many kinds of fishes and plants.Some live near the top of the sea.Others live deep down.There are also a lot of small living things, and lots of fishes live by eating them.
The sea can be very cold.The further people go down, the sea becomes colder and colder.At one time only some men could go down into the deep sea.But, in 1970, five women scientists lived in the deep sea for fourteen days.
1.The sea covers about _________ of the earth.
A.1/3 B.1/4 C.1/2 D.3/4
2._________ are not mentioned in this passage.
A.Fishes B.Plants C.Islands D.Living things
3.Which of the following is NOT true?
A.The sea is usually beautiful when the sun is shining.
B.The sea is always very terrible when the wind blows hard.
C.The highest mountain is in the deepest place of the sea.
D.The deeper the people go into the sea, the colder they will feel.
高一英语阅读理解中等难度题查看答案及解析
From a plane we can see the fields, cities, mountains or seas below. If we go into space, we see more and more of the earth. People and man-made satellites have been sent out into space to look at the earth carefully and people have learnt more about the earth in the last few years.
The sea looks very beautiful when the sun is shining on it. But it can be very terrible when there is a strong wind.
The sea is very big. It nearly covers three quarters of the earth. The sea is also very deep in some places. There is one place and at that place the sea is about 11 kilometers deep. The highest mountain in the world is about 9 kilometers high. If that mountain was put into the sea at that place, there would be still 2 kilometers of water above it!
In most parts of the sea, there are many kinds of fishes and plants. Some live near the top of the sea. Others live deep down. There are also a lot of small living things, and lots of fishes live by eating them.
The sea can be very cold. When people go down, the sea becomes colder and colder. Only some men can go down into the deep sea. But, in 1970, five women scientists (科学家) lived in the deep sea for fourteen days.
1.This passage is_________.
A.a short story B.for science reading
C.a piece of news D.a report
2.The sea covers about _______of the earth.
A One third B. One fourth
C. Two quarters D. Three fourths
3. Which of the following is NOT true?
A.The sea is usually beautiful when the sun is shining.
B.The sea is always very terrible when the wind blows hard.
C.The highest mountain is in the deepest place of the sea.
D.The deeper the people go into the sea, the colder they will feel.
4. The last sentence “But, in 1970, five women scientists lived in the deep sea for fourteen days.” means that________.
A.women wanted to live in the deep sea for a long time
B.women could go deeper into the sea than men
C.women liked living in the deep sea better than men
D.women could do the same work as men
高一英语阅读理解中等难度题查看答案及解析