Stephen Hawing, a great scientist, had a stro...

Stephen Hawing, a great scientist, had a strong will. His serious illness never ______ him _______ living a meaningful and colorful life.

A. learned;from　　 B. protected;from　　 C. saved;from　　 D. stopped;from

九年级英语单选题困难题查看答案及解析

Isaac Newton, the great British scientist, is often so deep in his thoughts that he will forget to eat his dinner.

One day his friend came to have dinner with him. Dinner was put on the table but Newton didn't come out of his study（书房）. His friend sat down and waited for him. After waiting for quite a long time, he decided that Newton must be so deep in some new theory that he forgot all about the dinner. So he began to eat the chicken without Newton.

When he finished, he thought he would play a joke on his friend. He put all the chicken bones（骨头）back on the dish and covered them with the dish over. Then he left Newton's house. He was quite certain that his joke would work.

Several hours later, Newton came out of his study, feeling very hungry. He saw the table was ready for dinner and so he sat down. When he lifted the cover and saw the bones of the chicken, he was greatly surprised. He turned, looked at the clock, and saw that it was long past his usual time for dinner.

"Well, well," he said to himself, "I thought I ate nothing, but I am wrong." He got up from table and went back to his study and began to work again.

Judge the following statements True (T) or False (F).

1.Newton comes from America.

2.Newton's friend didn't have dinner with him.

3.Newton's friend put all the chicken bones back on the dish.

4.Several days later, Newton came out of his study.

5.Newton has eaten the chicken.

九年级英语阅读理解中等难度题查看答案及解析

Stephen Hawking was famous　　　　 a scientist, he made a great contribution to the world, and he died 　　 March 14th, 2018.

A. for; on B. as; in C. as; on

九年级英语单选题中等难度题查看答案及解析

Stephen Hawking was famous　　　　 a scientist, he made a great contribution to the world, and he died 　　 March 14th, 2018.

A. for; on

B. as; in

C. as; on

九年级英语单选题中等难度题查看答案及解析

Stephen Hawking was known 　　　　 a scientist. He made a great contribution to the world，and he died　　　　 March 14th，2018.

A.as; on B.as; in C.for; on D.for; in

九年级英语单选题中等难度题查看答案及解析

Stephen Hawking ____ wrote A Brief History of Time(时间简史)is a great British scientist.

A. who　　 B. which　　 C. what

九年级英语单选题简单题查看答案及解析

—Do you know the great scientist Stephen William Hawking passed________a few months ago?

—Yes. He died________illness.

A.away; of B.away; from C.by; with D.off; as

九年级英语单选题中等难度题查看答案及解析

The famous research scientist Stephen Glenn, who had made very important medical achievements. was being interviewed by a new  reporter asked Stephen Glenn so much more creative than other.

He said that it all came  from an experience with his mother that happened when he was two years old. He tried to carry a bottle of milk form the refrigerator. But tried to carry a bottle of milk sprinkled all over the kitchen floor.

When his mother came into the kitchen, instead of complaining about it ,she said , “Robert, what a of complaining about it ,she said, “Robert, what a great and wonderful mess you have made! Well, the terrible thing has already been done . Would you like to get down and play in the milk form a few minutes before we clean it up?”

Indeed, he did. After a few minutes , his mother said ,”You know , Robert , whenever you make a mess like this , you have to clean it up . We could use a sponge or a towel. Which do you prefer?” He chose the sponge and together they cleaned up the milk.

His mother. then said, “You know , what we have here is a failed experiment in how to carry a big milk bottle with two small hands .Let’s go out in the back yard and fill the bottle with water and see if you can discover a way to carry it without dropping it “  The little boy learned that if he held the bottle at the op near the lip(容器的嘴)with both hands, he could carry it without dropping it What a wonderful lesson! At that moment he knew that he didn’t need to be afraid to make mistakes and mistakes were just opportunities for learning something new.

1.What does Stephen Glenn do?

A. A research scientist.

B. A famous doctor.

C. A science teacher.

D. A  newspaper  reporter.

2.When Stephen Glenn's mother saw the mess in  the kitchen, she was______

A. angry  B. patient  C  happy  D. sad

3._______cleaned up the floor of the kitchen.

A. No one       B. The baby-sitter

C. Stephen Glenn and his mother

D, Stephen Glenn's father

4.How did  Stephen  GIenn  learn Io carry a bottle of milk without dropping it?

        A. He tried carrying it over and over again.

B. He experimented by carrying a bottle of water.

C. He did as what his mother told him to.

D. His teacher told him.

九年级英语阅读理解中等难度题查看答案及解析

Scientist Stephen Hawking had to work really hard to speak．He chose letters and words from a screen controlled by movements of a muscle in his cheek．However，the slow system he used might soon be replaced．With a very different approach，doctors have found a way to get a person’s speech directly from their brain.

The system uses brain-reading software．It works only for sentences it has been trained on. Doctors at the University of California in San Francisco (UCSF) set out to create a better product， which allows people who are paralyzed (瘫痪的) to communicate more quickly than Hawking’s device，which uses muscle twitches(抽搐)to control a keyboard.

The Study of Brain Activity

The work was possible thanks to three patients．They had epilepsy(癫痫症)．This is a condition that has something to do with the nerves．It causes seizures(痉挛)．This is when their body suddenly moves on its own．They were about to have surgery(外科手术)for their condition.

Before their surgery，they had a small device placed on their brain for at least a week．It was used to map their seizures.The patients could speak normally，and they agreed to take part in Doctor Chang’s study．The doctor used the devices to record brain activity while each patient was asked nine questions．The patients were also asked to read a list of 24 possible responses.

Using the recordings，Chang and his team built computer models．The models learned to match patterns of brain activity to the questions the patients heard and the answers they spoke．Once trained，the software could identify questions and responses almost instantly．It used only brain signals．It was correct on what question a patient heard 7 out of 10 times．The software identified what response they gave 6 out of 10 times.

Improving Software to Read More Varied Speech

Even with the breakthrough，there are hurdles ahead．One challenge is to improve the software so it can translate brain signals into a variety of speech．This will require software trained on a huge amount of spoken language and matching brain signals．These signals will be different from one person to another.

Another goal is to read “imagined speech”，or sentences spoken in the mind．The system in the study detects brain signals that are sent to move the mouth．However，for some patients these signals may not be enough．More advanced ways of reading sentences in the brain will be needed.

1.From the passage，we can learn that ______.

A.the three patients with epilepsy have difficulty in speaking

B.Stephen Hawking’s system is controlled by his brain signals

C.the patients chose from nine responses to answer 24 questions

D.the brain-reading software can only recognize a few sentences now

2.What does the word hurdles in paragraph 6 mean?

A.Risks． B.Difficulties.

C.Possibilities． D.Disadvantages.

3.The purpose of the last two paragraphs is to _______.

A.tell us the disadvantages of the software

B.present the possible future of the software

C.explain the process of designing the software

D.show the author’s opinion toward the software

4.What’s the main idea of the passage?

A.Different devices to help paralyzed people to communicate.

B.Different ways to develop software that can help paralyzed people.

C.Doctors have started to explore software to read people’s brain signals.

D.The study showed the system could translate brain signals into a variety of speech.

九年级英语阅读单选中等难度题查看答案及解析

Stephen Hawking, one of the world's most famous scientists, believed that humans will one day have to move into space, "Once we step into space, our future should be safe," he said.

Today, many countries are all planning to send astronauts to Earth's closest neighbor: the moon. Some of these countries want to create space stations there within the next 10 years. These stations will prepare humans to visit and later live on Mars or other earthlike planets.

__①__ Robert Zubrin, a rocket scientist, thinks humans should colonize(殖民) space. He wants to start with Mars. Why? He thinks sending people to Mars will allow us to learn a lot of things—for example, the ability of humans to live in a very different environment. Besides, any progress we make in the fields of science, technology, medicine. and health will do good to people here on Earth.

__②__ Elon Musk, the CEO of Space X also believes we should colonize Mars. His long-term goal is to put one million people there if something bad happens to us here on Earth.

__③__ Many people say it's too expensive. Also, most space trips are not short. A one-way trip to Mars, for example, would take at least six months. People traveling this kind of distance could face many health problems. Besides, these first people would find life especially difficult in space. On the moon's surface, for example, the sun's rays are very dangerous. People would have to stay indoors most of the time.

__④__ No matter what different concerns there are, sending people into space seems certain. In the future, we might see cities on the moon or even new human cultures on other planets. First stop: the moon.

1.According to the passage, why are some countries planning to build space stations?

A.To develop space travel. B.To learn more about the moon's surface.

C.To prepare humans to live on other planets. D.To cut down the number of people living on Earth.

2.Which is the best place for the sentence "Not everyone thinks sending humans into space is a smart idea. "?

A.① B.② C.③ D.④

3.What is the purpose of this passage?

A.To give reasons for and against colonizing space.

B.To describe what life would be like on the moon.

C.To compare the environments of Mars and the moon.

D.To introduce progress in space science and technology.

九年级英语阅读单选困难题查看答案及解析