1--I have been working hard at math. However,...

1--I have been working hard at math. However, I can't get good marks in the exam.

--Go on studying hard. And I think your dream will

A. come true          B. come back     C. come out           D. come up with

九年级英语单项填空困难题查看答案及解析

—I have worked hard at math, but it seems that I haven’t made any progress.

—Keep on _____ at it, and you will be successful.

A. work                      B. working                  C. to work

九年级英语单项填空困难题查看答案及解析

At last， the mid-term exams are over. You’ve done the hard work， but you can’t relax. You have to prepare for the next exams. Do you hate exams? If you do， you’re not alone. Students in other countries hate them as well.

Luckily for them， British students have fewer exams than Chinese students. And they only have them once a year. Every summer they take a test in each subject. Each test lasts about an hour. These exams don’t count for much. Even if a student does really badly they still progress to the next year. When the results come out they are then placed in an end-of-year report. The report is sent to the child’s parents. It describes how the student studied at school.

This report is private（秘密）， so only the teacher， the student and his or her parents see it. This means that the students don’t know how other students scored(得分) in the test. Some students choose to tell each other， but others keep it secret.

Parents’ meetings are held twice a year， at the end of the winter term and then at the end of the summer term. Children go along with their parents to meet their teachers privately and discuss their performance at school.

1.According to this passage， the students of many countries 　　　　 exams.

A. don’t mind　 B. like　 C. hate　　

2.Which of the following is NOT TRUE for British students?

A. They have an exam once a year.

B. They don’t know their own scores.

C. Parents’ meetings are held at the end of the terms.

3.The underlined phrase “don’t count for much” means 　　　　 .

A. 难以计数　　　 B. 不太重要　　 C. 期望不多　　

九年级英语阅读理解困难题查看答案及解析

At last, the mid-term exams are over. You’ve done the hard work, but you can’t relax. You have to prepare for the next exams. Do you hate exams? If you do, you are not alone. Students in other countries hate them as well.

Luckily for them, British students have fewer exams than Chinese students. And they only have them once a year. Every summer they take a test in each subject. Each test lasts about an hour. These exams don’t count for much, even if a student does really badly they still progress to the next grade. When the results come out, they are then placed in an end-of-year report. The report is sent to the child’s parents. It describes how the student studied at school.

This report is private, so only the teacher, the student and his or her parents see it. This means that the students don’t know how other students scored(得分) in the test. Some students choose to tell each other, but others keep it secret.

Parents’ meetings are held twice a year, at the end of winter term and then at the end of the summer term. Children go along with their parents to meet their teachers privately and discuss their performance at school.

1.For British students, the school life is ________than that of Chinese students.

A．more relaxing      B．much tenser       C．more boring       D．much harder

2.The underlined phrase “don’t count for much” means________

A．难以计数         B．不太重要          C．期望不多         D．难度不大

3.Which of the following is NOT true for British students?

A．They have exams once a year.

B．They don’t know their classmates’ scores.

C．Parents’ meetings are held at the end of the terms.

D．They like to tell each other their scores

九年级英语阅读理解中等难度题查看答案及解析

This math problem is so hard that I can't ______ .Please give me some advice.

A. look out it　　　　　　　

B. work it out　　

C. give it out

九年级英语单项填空中等难度题查看答案及解析

---The math problem is so hard that I can’t work it out.

---Don’t __________. I’m sure you can.

A. give out　　　　 　　 B. take out

C. give up　　　　　　 D. try out

九年级英语单项填空中等难度题查看答案及解析

Have you ever been stuck(困住) for hours on a hard math problem? If you sat there for some time you might eventually solve it, but scientists say that daydreaming might be a much better way to tackle(处理) difficult tasks.

In fact, daydreaming has long been misunderstood. It’s considered to be a bad thing and often associated with laziness. “We’re harsh(严厉的) on ourselves if we catch ourselves mind wandering,” says Professor Kalina Christoff from the University of British Columbia in Canada.

But the truth is that some of the most important scientific discoveries came about because scientists allowed their minds to wander. For example, Albert Einstein began his theory of relativity(相对论) when he daydreamed about riding a beam(束) of sunlight to the edge of the universe. And now, research has shown that normal people can also improve their problems solving ability in the same way, reported The Telegraph.

In a study, 145 people aged between 19 and 32 were asked to list as many unusual uses as possible for everyday objects. Some of them were given a 12-minute break while the others were not allowed any break from the task. People on the break did not simply relax—some of them were told to carry out a tiring memory task while others did an easier task.

Scientists found that people who did the easier task were daydreaming a lot. They thought about personal issues in the past or in the future because their mind was at ease.

After the break, all participants were asked to return once again to the task of listing unusual uses for everyday objects. It was found that daydreamers improved their performance by 40 percent, while all the other people, including those who didn’t have a break and who did tiring tasks during the break, performed the same as before.

“People think that when the mind wanders away, it just gets turned off—but we show the opposite,” explained Christoff. “A more playful attitude might allow you to call in more resources(解决办法).” So when you are struggling to solve complicated problems, it might be better off if you switch to a simpler task and let your mind wander for a while, she sug­gested.

According to Christoff, people typically spend one-third of their waking time daydreaming. “It’s a big part of our lives, but it’s been largely ignored(忽视) by science.”

1.. It was believed that daydreaming __________.

A. had something to do with imagination

B. had been misunderstood for a long time

C. was a waste of time when the mind was shut off

D. was a good way to relax and solve problems

2.. What is the main purpose of Paragraph 3?

A. To show that great scientists daydream a lot.

B. To inform us that daydreaming has its benefits.

C. To prove people can daydream whenever they like.

D. To introduce new experiments on daydreaming.

3.. What did the scientists discover in the experiment?

A. People’s minds turned off as they daydreamed.

B. The group that were given hard memory tasks performed best.

C. People who had a break showed improvement in the task.

D. Daydreaming could improve people’s problem-solving abilities.

4.. How did the scientists get their conclusion?

A. By studying brain scan results of the groups.

B. By comparing the performances of different groups.

C. By asking and observing people in different groups.

D. By analyzing the amount of tasks each participant did.

九年级英语阅读理解极难题查看答案及解析

He hadn’t worked hard at his lessons．_______, he failed in the exam．

A．As a result　　　     B．However　　 　     C．Otherwise　　         D．Since then

九年级英语单项填空简单题查看答案及解析

—Jack works very hard, but he can’t get good grades in exams.

—That’s because he can’t study____.

A. carefully　　　 B. successfully

C. wisely　　 　　　 D. quickly

九年级英语单项填空中等难度题查看答案及解析

AI（人工智能）products are not new. However, researchers have been working to improve the technology. Now virtual（虚拟的）assistants, like Siri and Alexa, can have short conversations with us. AlphaGo taught itself to play Go and became better than the top human players.

Now an AI system （系统）has been tasked with passing a multiple-choice （多项选择） exam. The goal is to improve machines' language understanding and logic（逻辑）with so-called computer vision（视觉）.

A system named Aristo was developed by the Allen Institute for AI, a lab in the United States city of Seattle. It recently passed an eighth-grade science exam taken by many US students. The New York Times reported. It correctly answered more than 90 percent of the questions. Then it was given a twelfth-grade exam, it scored more than 80 percent.

It's an example of the progress in AI development. Four years ago, 700 computer scientists tried to develop AI systems that could pass these kinds of exams. None scored higher than 60 percent.

Aristo was able to pass the exams because it can not only understand language but also use logical thinking to solve difficult problems. For example, it can understand what a forest fire is and how it could endanger animals like squirrels or make the food supply they need less.

The system used BERT, a kind of neural （神经的）network technology developed by Google, to answer the questions. BERT has "read" thousands of English articles. If it looks at a sentence with a missing word, it can correctly guess what the word is. With BERT’ s help. Aristo "read" many multiple-choice questions and answers. Over time, it was able to find logical patterns on its own.

It may still be in the earliest stages, said Jingjing Liu, a Microsoft researcher who has been working on similar technologies. “We can't compare this technology to real human students and their ability to reason."

However, Aristo's success means that Al systems are getting better at understanding users, and we might see improved search engines and hospital databases （数据库）in the near future.

1.Why did scientists develop Aristo?

A.To make better multiple-choice exams.

B.To improve AI's ability to teach itself.

C.To shorten the time AI needs to "read" information.

D.To improve the language understanding and logic of AI.

2.What can we know about Aristo from its exam results?

A.It was smarter than most US students.

B.It could only deal with science questions.

C.It was best at understanding English.

D.It did better than other AI systems in similar tasks.

3.The sixth paragraph mainly talks about how__________　　 .

A.Aristo teaches itself B.Aristo reads English articles

C.Google developed BERT D.difficult it was to design Aristo

4.What can be learned from Jingjing Liu's words?

A.AI will soon take the place of humans in many tasks.

B.Aristo still cannot compare to human reasoning skills.

C.Humans can't live without Al in the future.

D.Aristo can score more than 80 percent in a twelfth-grade exam.

九年级英语阅读单选简单题查看答案及解析