CWhat is blood? It is the red liquid which co...

C

What is blood? It is the red liquid which comes out of your finger when you cut it. There are bout thirteen pints(Ʒ) of blood in a man' s body. He can give a pint of blood at a time to

blood bank for the use of other men who may need it. A healthy body makes up one pint of bloo

quickly.

What does our blood do for us? It takes food to all parts of our bodies and takes waste awa

from them. All the parts of our bodies are made up of cells, and these cells, which are very small

all need food all the time.

The blood is like a stream. The cells take what they need out of the blood stream, as plants an fishes take their food out of water. The blood stream carries food and oxygen which it has taken up our lungs to all the cells in the body.

What makes the blood go on moving round the body in a stream? The heart sends it round.

man' s heart is about the Size of his fist. The heart is a pump. It has rooms in it with doors betwee

them. It pumps blood in and out through these doors by changing the size of the rooms so that th

doors open and shut.

The heart keeps stream of blood going all round the body and back again to itself. Everywhel the blood stream does two things: supplies the cells with food and oxygen and takes away the waste It is as if the blood kept the little fires in the cells burning and took away the ashes.

49. Blood is the_____

A. red liquid which comes from your finger    B. red liquid which we can see

C. red liquid which flows in a man's body     D. red cell

50. The blood in a man' s body__________.

A. makes food all the time

B. takes food to all cells in the body and takes waste away

C. supplies the cells with food and oxygen from them

D. takes waste away from the cells

51. __ makes the blood go on moving round the body in a stream.

A. The heart          B. The lung          C. The cell          D. The pump

52. This article tells us about__________.

A. a stream of blood                        B. the use of the heart

C. a wonderful pump                       D. something about blood

高三英语阅读理解简单题查看答案及解析

When it comes to eating out, we can't help thinking of big meals in the restaurants, which usually contain much more fat and less fibers. Whether it is a business meeting over lunch or a fast food meal with the kids, eating out is a part of our lives. We eat out to save a lot of time, like grabbing a bite at fast food restaurants, or we take dining out as a favorite way to relax and socialize with friends.

Eating out can be fun but many people still like eating at home more because it is healthier. When my dear wife does not prepare foods for me, I would rather cook some instant noodles and eat at home! However, we go out to eat once in a while for holidays or on special occasions.

More and more people want to make healthy food choices nowadays. Some are watching calories, while others want to keep their cholesterol(胆固醇)under control or eat less fat. Plan ahead and choose wisely, you will find foods that fit into your meal plan and make eating out both healthy and enjoyable．

Here are some pointers（忠告） to remember that can help you make wise choices when eating out: go for balance, watch portion sizes and drink water or low-fat milk．Keep the ground rules of good nutrition in mind．Eat a variety of foods in moderate（适中的）amounts, limit the amount of fat you eat, and watch the amount of salt in food．If you develop the skills to make healthy choices now, your body will thank you later．

Eating out can be one of life's great pleasures．Make the right choices, ask for what you need, and balance your meals out with healthy meals at home．You can enjoy yourself and take good care of yourself at the same time．

1.From the passage, we can infer that often eating out______________ ．

A．saves time from cooking              B．maintains good relations with friends

C．contributes to healthy bodies        D．is of disadvantage to health

2.On the author's wedding anniversary, _______________________．

A．he prefers to cook some instant noodles for his wife

B．he would like to have a party at home

C．he must make an important choice

D．he is likely to take his wife to eat out

3.The third paragraph doesn't say but implies that________________．

A．calories have caused people's attention

B．people's awareness of health has improved

C．it is important to choose your food every

D．most people are worried about their cholesterol day

4.If you had been watching for your diet, _____________________ ．

A．you would be in good health now

B．you could have cured your illnesses

C．you wouldn't have suffered any disease

D．you might have had much experience in life

高三英语阅读理解中等难度题查看答案及解析

When it comes to eating out, we can't help thinking of big meals in the restaurants, which usually contain much more fat and less fibers. Whether it is a business meeting over lunch or a fast food meal with the kids, eating out is a part of our lives. We eat out to save a lot of time, like grabbing a bite at fast food restaurants, or we take dining out as a favorite way to relax and socialize with friends.

Eating out can be fun but many people still like eating at home more because it is healthier. When my dear wife does not prepare foods for me, I would rather cook some instant noodles and eat at home! However, we go out to eat once in a while for holidays or on special occasions.

More and more people want to make healthy food choices nowadays. Some are watching calories, while others want to keep their cholesterol(胆固醇)under control or eat less fat. Plan ahead and choose wisely, you will find foods that fit into your meal plan and make eating out both healthy and enjoyable.

Here are some pointers to remember that can help you make wise choices when eating out: go for balance, watch portion sizes and drink water or low-fat milk. Keep the ground rules of good nutrition in mind. Eat a variety of foods in moderate(适中的)amounts, limit the amount of fat you eat, and watch the amount of salt in food. If you develop the skills to make healthy choices now, your body will thank you later.

Eating out can be one of life's great pleasures. Make the right choices, ask for what you need, and balance your meals out with healthy meals at home. You can enjoy yourself and take good care of yourself at the same time.

1. From the passage, we can infer that often eating out______________ .

2. On the author's wedding anniversary, _______________________.

3. The third paragraph doesn't say but implies that________________.

4.If you had been watching for your diet, _____________________ .

高三英语阅读理解中等难度题查看答案及解析

If 62 is the number in red on the top of your math test, for most of us, it's a total disaster. Your entire week is ruined, and 62 is what races through your head for the rest of the day. If 9 is the number of likes on that cute photo you posted the other day, many will feel rather disappointed.

Our lives have become a constant system of ranks, assessments, and numbers. The days of passing judgment on others based on personality are gone, and now we judge based on how good a person's numbers are. We compare ourselves to the numbers of others, such as how low another person's weight is how high their paycheck. Self-worth is no longer based on quality of character, but quantity of numbers.

In today's social media consumed society,it has never been easier for people to broadcast their numbers to the world.A simple click of a button can take you to a page where you can observe the number of friends or followers a person has. Teenagers have taken on this mentality that if you don't have a certain number of followers, then you aren't“cool”. Many feel they are not important if very few people are witnessing their status updates. This state of mind is harmful and not at all accurate.Twitter and Facebook can let the world witness your updates, but they will never let anyone see who you really are. In the end.self-worth should be based on what you think of yourself, not what the world thinks of you.

So next time you receive a failing grade or you lose a follower, remember that these things cannot and should not define(定义)you. You are not your numbers. You are a person-a3-D living and breathing person with ideas and creativity and love that the rigidity of numbers cannot represent. You are the things you love and the things you laugh at and the way you treat others.

1.How does the author sound in Paragraph 2?

A. Regretful. B. Conservative. C. Doubtful. D. Friendly.

2.According to the passage,teenagers believe it cool to　　　　　　 .

A. display their status updates B. post their daily doings online

C. win recognition on social media D. define their self-worth themselves

3.What can be a suitable title for the text?

A. Numbers make What You Are B. You Are More Than a Number

C. It's Your Number That Matters D. Let's Stop Sharing Our Numbers

高三英语阅读理解困难题查看答案及解析

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 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.

高三英语阅读理解困难题查看答案及解析

It is the first time ____ I have come to your city.

高三英语单项填空简单题查看答案及解析

The U.S. is still out in front of global competitors when it comes to innovation (革新), but American universities-where new ideas often spread-have reason to look over their shoulders.

That's especially true for technologies like 5G phone networks and artificial intelligence. In President Donald Trump's opinion, they're exactly the fields where the U.S. has to lead - and also the ones where Asia, especially China, is catching up. Universities from China get more patents than their U.S. peers in wireless communications, according to research firm GreyB Services. In AI, 17 of the top 20 universities and public research organizations are in China, with the Chinese Academy of Sciences topping the list, says the World Intellectual Property Organization in Geneva.

There's a special place for universities in the development of science. Universities educate future scientists and can be incubators (孵化器) for pie-in-the-sky ideas-some of which turn out to be game-changers. The list ranges from Google's search engine to DNA technology that's behind a whole industry of gene-manipulating (基因编辑) treatments.

However, government aids to universities haven't been growing for more than a decade, meaning they've declined in real terms and as a share of the economy, leading to the cost increase for universities and meanwhile somehow discouraging the teaching staff from putting all their hearts into their scientific research.

“If you look at the federal dollars, they've not really changed considerably,” says Stephen Susalka, head of AUTM, a technology transfer association whose members include 800 universities. “Other countries are catching up. We can't be satisfied with what we have achieved.”

1.What does the underlined phrase “look over their shoulders” in Paragraph 1 mean?

A.Watch out B.Take off

C.Stand up D.Hide away

2.The author mentions 5G phone networks in Paragraph 2 to show.

A.Chinese universities have obtained more patents than other countries

B.the Chinese government provides aids to Chinese universities

C.wireless communications are changed dramatically these years

D.U.S. universities may lose their lead in some high-tech fields

3.What is the main idea of Paragraph 3?

A.Universities can be birthplaces of game programmers.

B.Pie-in-the-sky ideas from universities can be revolutionary.

C.Universities play an important role in science development.

D.Gene-manipulation helps to develop DNA technology.

4.What's Stephen Susalka's attitude towards the future development of U.S universities?

A.Worried. B.Disapproving.

C.Positive. D.Unconcerned.

高三英语阅读理解中等难度题查看答案及解析

The U.S. is still out in front of global competitors when it comes to innovation(革新), but American universities-where new ideas often spread - have reason to look over their shoulders.

That's especially true for technologies like 5G phone networks and artificial intelligence. In President Donald Trump's opinion, they're exactly the fields where the U.S. has to lead-and also the ones where Asia, especially China, is catching up. Universities from China get more patents than their U.S. peers in wireless communications, according to a research firm named GreyB Services. In Al, 17 of the top 20 universities and public research organizations are in China, with the Chinese Academy of Sciences topping the list, says the World Intellectual Property Organization in Geneva.

There's a special place for universities in the development of science. Universities educate future scientists and can be incubators(孵化器) for pie-in-the-sky ideas - some of which turn out to be game-changers. The list ranges from Google's search engine to DNA technology that's behind a whole industry of gene-manipulating(基因编辑) treatments.

However, government aids to universities haven't been growing for more than a decade, meaning they've declined in real terms and as a share of the economy, leading to the cost increase for universities and meanwhile somehow discouraging the teaching staff from putting all their hearts into their scientific research.

“If you look at the federal dollars, they've not really changed considerably,” says Stephen Susalka, head of AUTM, a technology transfer association whose members include 800 universities. “Other countries are catching up. We can't be satisfied with what we have achieved?”

1.What does the underlined phrase “look over their shoulders” in Paragraph 1 mean?

A.Watch out. B.Take off.

C.Stand up. D.Hide away.

2.The author mentions 5G phone networks to show .

A.Chinese universities have obtained the most patents

B.Chinese universities get aids from the government

C.wireless communications have changed dramatically

D.U.S. may lose their lead in some high-tech fields

3.What is the main idea of Paragraph 3?

A.Pie-in-the-sky ideas can be revolutionary.

B.Universities can produce game programmers.

C.Gene-manipulation helps to develop DNA technology.

D.Universities play an important role in science development.

4.What's Stephen's attitude to the future development of US universities?

A.Worried. B.Disapproving.

C.Positive. D.Unconcerned.

高三英语阅读理解中等难度题查看答案及解析

It is so difficult a question_______ none of the kids could work it out.

A. as          B. that         C. which         D. X

高三英语单项填空中等难度题查看答案及解析

One of the things that makes your smart-phone so smart is that if you pull it out in the sun, it senses that—and dials up the screen brightness to compensate. But it’s not a perfect solution.

“First of all, it’s still not bright enough—you have to remember how respectable sunlight is.” Shin-Tson Wu, a physicist at the University of Central Florida. The other problem, he says of the brightened screen, is it kills the battery. So Wu and colleagues have produced a battery-sparing alternative: an anti-reflective screen-coating. Based on the eyes of moths. “Nature is so rich! We can learn a lot from nature. “The thing Wu and others have learned about moth eyes, is that they’re uneven, dotted with tiny projections. That uneven surface reduces the reflection of light off their eyes- thought to help the bugs escape predators (捕食者), and see better in low light. So Wu and his team built a similar surface with tiny dimples (凹), to cut down on glare. He says the dimpled coating could improve the readability of a screen by five to 10 times, compared to a normal smart-phone screen. The details are in the journal Optica.

The tech hasn’t been commercialized yet, and that could take a few years. Which gives researchers time to take advantage of another property of these surfaces: they’re flexible. Meaning the possibility of bendable displays. Combine that with the bendy batteries we reported on in a recent podcast(播客), and it looks the smart-phones of the future could be set for a real transformation.

1.Why do the researchers develop the anti-reflective screen-coating?

A.To brighten the screen. B.To make profits.

C.To take in the sunlight. D.To save the use of battery.

2.What inspired the invention of the screen?

A.The predators. B.The reflection of light.

C.The eyes of moths. D.The smooth surface.

3.How does the screen work?

A.It helps bugs escape.

B.It slows down reading.

C.The smooth surface protects our eyes.

D.The rough surface decreases the reflection of light.

4.What do the researchers expect of the screen?

A.I’ll transform itself. B.I’ll be environment-friendly.

C.I’ll reach consumers soon. D.I’ll be powered by recyclable batteries.

高三英语阅读理解中等难度题查看答案及解析