The human brain's power could compete with an...

The human brain's power could compete with any machine. And now a group of scientists from across Europe are trying to build one using the world's most p1. computer.

Our brains have 100 billion neurons Each one performs billions of ‘calculations’ second　 s2. to a desktop computer.

So the brain computer will need to be able to do a billion calculations.

Finding a way to power the supercomputer will be one of the Scientists' major challenges. They hope to c3. it within 12 years.

Group leader, Professor Henry Markram, said, “The billions of interconnected neurons make it hard for us to truly understand how the brain works. Simulating it will make it much e4. allowing us to operate and measure any aspect of the brain.”

The brain will be built in facility in Germany. It will have thousands of 3D images, so scientists can “fly” around different areas and w5. how they communicate with each other.

If the “brain” works, it will help scientists understand brain diseases such as Parkinson's, and know more about how we think and make d6..

There are concerns about the consequences of the computers which can think for themselves. But Professor Markram said “This is one of the t7. great challengers for humans. We need to understand earth, space and the brain. We need to understand what makes us human.”

九年级英语单词填空简单题查看答案及解析

The human body is a living machine, and, like all machines, it needs “fuel” to supply it with energy. This is provided by the food we eat. But how much do we need to stay healthy?

The energy value of food is usually measured in calories(卡). A calorie is the amount of heat required to raise the temperature of 1 kg of water by 1℃. The number of calories people need per day is different, as the picture shows. Also, the number of calories you use at any one moment normally depends on the activity you are in. For example, you need more calories for standing than for sitting, more for running than for walking, and so on.

The energy in food is in the form of three kinds of chemical materials—carbohydrate（碳水化合物）, protein（蛋白质） and fat. Carbohydrate provides 3.8 Cal /gm of the energy, protein 4.0 Cal/gm, and fat 8.8 Cal/gm. Each food contains different amounts of these materials, as the round pictures show.

(P= protein      C= carbohydrate    F=fat)

1.How many calories are needed to raise the temperature of 5kg of water from 35℃ to 90℃?

2.Which of the following contains the most amount of calories?

3.Who needs the most amount of calories each day?

4.Which of following is True?　　

5.This passage mainly tells us ______.

九年级英语阅读理解中等难度题查看答案及解析

The human brain is divided into two sides, or hemispheres, called the right brain and the left brain. The two hemispheres work together, but each one specializes in certain ways of thinking.

Each side has its own way of using information to help us think, understand, and process informa-tion.The left side of the brain controls language. It is more verbal and logical. It names things and puts them into groups. It uses rules and likes ideas to be clear, logical, and orderly. It is best at speech, reading, writing, and math. You use this side of the brain when you memorize spelling and grammar rules or when you do a math problem.

The right side of the brain is more visual and creative. It specializes in using information it receives from the senses of sight, sound, smell, touch, and taste. This side of the brain likes to dream and experiment. It controls your appreciation of music, color, and art. You use this side when you draw a picture or listen to music.Although we all use both sides of our brains, one side is usually stronger or dominant. Some people are more “left-brained,” and others are more “right-brained”. Our dominant side influ-ences the kinds of jobs and hobbies we have. Politicians, artists, architects, and musicians depend on their right brains. Accountants, engineers, doctors, and lawyers usually rely on their left brains.

1.What can we know from the passage?

A. When we speak, we use right side of the brain.

B. Right side of the brain is stronger than left side.

C. We use right side of the brain to do a math problem.

D. Each side of the human brains work in its own way.

2.What does the underlined word “dominant” mean?

A. powerful　　 B. heavy

C. smart　　 D. young

3.Which of the following may be the best title of the passage?

A. The Human Brain, Fantastic Things.

B. We Have Both Sides of Our brains.

C. Is Your Right Brain Different from Your Left?

D. Do You Know Your Right Brain from Your Left?

九年级英语阅读理解困难题查看答案及解析

The 21st century discoveries about the human brain and its functioning have showed the surprising fact that human abilities are not fixed at birth. In other words, what you are able to do with your life is not fixed when you are born. It is not all in the genes( 基 因 ). It is not just nature: nurture(教育, 培育) plays an important part in the moulding(塑造) of what a person is, and what he/she can be.

Brain plasticity(可塑性) or neuroplasticity(神经可塑性) refers to the amazing ability of the human brain to modify(修改) its structure and functions according to the changes within the body and/or in the outer environment.

In his book “The Brain that Changes Itself” psychiatrist and psychoanalyst Norman Doidge, M.D., offers an introduction to the great scientists strongly supporting neuroplasticity and the people whose lives they’ve changed. The book describes real life stories of stroke( 中 风 ) patients learning to speak again, and the amazing story of a woman born with half a brain that restructured itself to work as a whole. It is a book that changes the way we think about our brain, its nature, and its potential(潜能).

The genes we receive from our parents are finite(有限的), no doubt about that. However, our brain’s ability to develop is infinite. New brain cells are being born all the time, and to keep them alive and growing, we have to stimulate(刺激) them.

Here lies the promise of neuroplasticity in the moulding of children into adults who are capable of realizing their potential. For genius is nothing but a human being who has realized　 his/her inborn potential! What Mozart, Einstein and da Vinci had was inborn potential plus(和，外加) the right environment.

All geniuses started life in exactly the same way. They had parents who supported the development of their individual gifts and talents. They had the right environment and stimuli(刺激， 刺激物) that led to the best development of themselves.

You can think about your child’s gifts as the merging(融合的) colours of a rainbow. The

possibilities are endless. All children are born with three natural abilities that provide them with the potential to think like a genius: the abilities to think, to learn and to develop their own individual way of thinking and learning.

Can your child be a genius? Yes, he/she can be, if you give him/her the right environment, the right stimuli and the right guidance.

1.What does the human brain modify when the outer environment changes?

A.The world. B.The stimuli.

C.Its colour. D.Its structure and functions.

2.Which statement is true according to the passage?

A.Human abilities are fixed when they were born.

B.A stroke patient can never learn to speak again.

C.Nurture can mould of what a person is because our brain has its nature and potential.

D.The genes we receive from our parents completely decide what we can do or can’t do.

3.What’s the main idea of Paragraph 7?

A.Discovering the time your child can be a genius.

B.Discovering the gifts and talents of your child.

C.Discovering the reason your child wants to be a genius.

D.Discovering the colour of the natural abilities of your child.

4.Which of the following would be the best title for the passage?

A.Is your child a genius? B.Can your child be a genius?

C.Do you want to be a genius? D.Is it important to be a genius?

九年级英语阅读单选困难题查看答案及解析

Is a human brain a __________ powerful calculator __________ a computer?

A.much; as B.more; a C.much; than D.more; than

九年级英语单选题中等难度题查看答案及解析

The human brain is very small and light only two percent of our total body weight, but it needs about 20% of the oxygen(氧气) that our body takes in. We can't think well if our brain isn't getting enough oxygen, so always make sure there is enough oxygen in the air when you need to learn or remember something. No one can remember everything. but everyone can learn how to improve their memory. Here are some suggestions ---none of them can make your memory 100% perfect, but all of them are helpful.

When you want to remember something, tell a friend about it. This way the new information becomes more memorable. Later on, think about the conversation with your friend. It will remind you of the information you wanted to remember.　　

Don't over-train your brain. When you've remembered a list of new words, stop studying. It's better to study a lot of material for a small amount of time than a small amount of material for a lot of time! But remember you do have to practice your new words regularly!

Our memory works well when we are asleep. If you want to remember something, go to bed and go to sleep right now after learning it.　

If you have to remember something big, divide it into small parts. It's easier to remember 198756430387 if you divide it into four smaller bits:198-756-430-387.

If you want to remember a piece of information, and you can't, don't get angry. Relax and tell yourself, "If it's important, I will remember it later.”

One of the best ways of remembering is to make pictures on the movie-screen of your mind and it's fun, too! Scientists say that our brain works a lot in pictures. So sometimes, if we want to remember new information, it helps to make a picture story. Anyone can learn to do this.

1.If you Weigh fifty kilograms, how heavy is your brain?

A.About ten kilograms.

B.About two kilograms.

C.About one kilogram.

2.How many helpful suggestions are mentioned in the passage?

A.Five. B.Six. C.Seven.

3.What should someone do after he has remembered a list of new words?

A.He should rest, then practice them regularly.

B.He should tell himself about what he has done.

C.He should continue to remember more new words.

4.Which of the following is TRUE according to the passage?

A.It's useless to remember something before going to sleep.

B.It's easier to remember something by dividing it into small parts.

C.It's harder to remember something by changing words into pictures.

5.What's the best title of this passage?

A.An introduction to our brain.

B.Some good ways of learning.

C.Advice on improving our memory.

九年级英语阅读单选简单题查看答案及解析

Once there was something wrong with a machine in a factory. The workers could do nothing but turn to a German engineer for help, who drew a line on it and then said, “Take off the part where the line is and change it for a new one. ”The machine, with a new line on, began running well again. The engineer then asked for $30,000 for what he had done. The following were what he wrote on a bill, “The new part only costs one dollar, and knowing where the problem with the machine is costs $29,999.”

One dollar for changing a new part sounds reasonable （有道理的）but the $29,999 is exactly the value （价值）of wisdom （智慧）and knowledge.

1.The factory turned to the German engineer because _______.

A. he had nothing to do in the factory

B. there were no other people in the factory

C. the workers could not repair the machine

D. the workers asked for too much money for repairing the machine

2.According to the engineer, the finding of the problem cost _______.

A. only one dollar　　 B. $ 29.999

C. nothing　　 　　　　 D. less than the now part

3.The best title for the passage should be _______.

A. The Value of Knowledge　　 B. Helpless Workers

C. The Expensive Machine　　　 D. The Lucky Factory

九年级英语阅读理解中等难度题查看答案及解析

Could you help me to fix up the machine? _________

A. With pleasure　　 B. My pleasure.　　 C. It was a pleasure　　 D. You are welcome.

九年级英语单选题中等难度题查看答案及解析

Could you help me to fix up the machine? _________

A.With pleasure B.My pleasure. C.It was a pleasure D.You are welcome.

九年级英语单选题中等难度题查看答案及解析

Could you tell me _________ with my washing machine?

A.what the matter was B.what's wrong C.what was wrong D.what the matter is

九年级英语单选题中等难度题查看答案及解析