_____ ourselves from stress, we need deep tho...

_____ ourselves from stress, we need deep thought and inner quietness.

A. Free　　 B. Freed

C. To free　　 D. Freeing

高一英语单项填空中等难度题查看答案及解析

______ ourselves from the physical and mental tensions, we each need deep thought and inner quietness.

A. Freed　　 B. having freed

C. To free　　 D. Freeing

高一英语单项填空中等难度题查看答案及解析

Sometimes we need true friends’ shoulders ____we can cry to free ourselves from pain.

A. by which　　　　 B. on which

C. in which　　　　 D. with which

高一英语单项填空简单题查看答案及解析

Our solar system might be crazier than we once thought. Scientists say that deep within Uranus（天王星） and Neptune（海王星） it rains diamonds．

On Earth. diamonds form under extreme heat and pressure. The inside of Uranus and Neptune also has high temperatures and pressures. What's more, the blue planets are largely made up of icy water and gases such as methane(甲烷).

So scientists have long believed that deep inside the two planets, the heat and pressure the methane into hydrogen (氢)and carbon (碳) Then diamond rain would form, falling toward the center of the planets.

But no one could prove that this would really work-until now. In a study published recently in the journal Nature Astronomy, scientists say they were able to create this kind of "diamond rain" in a lab, reported The Guardian.

Scientists used high-powered lasers to create pairs of shockwaves through a kind of plastic. The plastic is made from hydrogen and carbon, much like methane. The shock waves created high pressure and heat, like that inside Uranus and Neptune.

"The experimental time is very short, Dominik Kraus, lead author of the study, told The Guardian. "That we saw this very clear signature of diamonds was actually very, very surprising”.

The diamonds created in the lab were tiny, only a few nanometers (纳米)wide. Scientists believe that diamonds would be much larger within Neptune and Uranus. Then they might slowly sink toward the planets center because of gravity.

1.What factor is needed to form diamonds?

A. Extreme heat and pressure　　 B. Hydrogen and carbon

C. lcy water and gases　　 D. High-powered lasers

2.What does the underlined word mean in the last paragraph?

A. Unsuccessful　　 B. Small

C. Real　　 D. Natural

3.How did scientists prove the theory of forming diamond?

A. By giving examples　　 B. By stating argument

C. By explaining statistical data　　 D. By doing experiments

4.What can be referred from the text?

A. There are many high-powered lasers in Neptune and Uranus

B. Deep inside Neptune and Uranus could be full of diamonds

C. The shockwaves inside Neptune and Uranus crate high pressure and heat.

D. Scientists long believe that there are diamonds inside Neptune and Uranus

高一英语阅读理解中等难度题查看答案及解析

The information he gave us was quite different from _______ we got ourselves.

A．one              B．those             C．that              D．it

高一英语单项填空中等难度题查看答案及解析

Youth is a stressful time from friends to school to families, and stressful situations become common. The body can respond (反应) with faster breathing, a fast beating heart, tense (绷紧的) muscles and drop of sweat. And teens who breathe polluted air appear to respond most strongly to stress, a new study shows.

Jonas Miller, a psychologist working at Stanford University ,studied whether or how air pollution might affect the body’s response to stress. Miller's team invited 144 teens to participate in a stressful test. Most of the kids lived in or near San Francisco,which has the worst air quality.

Before the test, the researchers used sensors(感测器) to record heart rates and sweat levels for five minutes as the kids rested. Then as the test began, a researcher read aloud the beginning of a story and the kids had five minutes to make up an exciting ending to the story. They would have to memorize their ending and present it aloud to a judge. After finishing this task, the kids were asked to do math problems, which obviously was a harder task. If he or she made a mistake, the judge let the student start over. The whole time, sensors recorded heart rates and sweat levels.

Miller found all the students had similar heart rates and sweat levels at rest. But as the test got difficult, differences began to appear. Kids from places with more air pollution responded more strongly to stress and their heartbeats became irregular. They sweated more than teens who lived in cleaner places.

"The teens' bodies were preparing to deal with possible challenges in the environment and such bodily responses to stress were linked to negative feelings", Miller concludes. Over time, he says, "these responses can contribute to both physical and mental health problems."

This study has proved the negative heath effects of air pollution among teenagers. Therefore, teenagers should try to avoid their exposure (暴露) to air pollution They should consider limiting their time outside during rush hour, especially on days when air pollution is particularly strong.

1.What happened to teens in stressful situations?

A.Their bodies react strongly.

B.Their muscles cause pain.

C.They become seriously sick.

D.They have trouble in breathing.

2.What can we learn about the test?

A.The judge of the test was strict with the kids.

B.The kids enjoyed making up endings of stories.

C.Those breathing polluted air doesn't have more stress in life.

D.The kids gradually felt more stress in the process.

3.From the study we can infer that tens should ____.

A.solve their mental heath problems

B.spend less time outside in heavy traffic

C.learn to deal with stressful situations

D.enjoy more outside activities in good weather

4.Where is the passage probably from?

A.A report on pollution. B.A geography book.

C.A psychologist's diary. D.A science magazine.

高一英语阅读理解困难题查看答案及解析

From self-driving cars to deep sea explorers, more and more of humans’ tasks are being taken over by robots. But technology doesn’t stop there. In mid-August, reported the BBC, scientists from Cambridge University developed a robotic system that meant a robot could “build other robots, each one better than the previous(以前的) generation”.

The BBC noted that “those concerned about machines taking over the world shouldn’t worry”.

However, over 1,000 scientists and numerous artificial intelligence (AI, 人工智能) researchers－including UK astrophysicist Stephen Hawking and Apple cofounder Steve Wozniak of the US-brought the danger of fully autonomous weapons(自主武器), known as “killer robots”, to our attention earlier this summer.

“If any major military(军事的) power pushes ahead with AI weapon development, a global arms race is inevitable(不可避免的),” warned an open letter released at the International Joint Conference on Artificial Intelligence held in Buenos Aires, Argentina.

Unlike drones(无人机), which need a human hand, this kind of robot would have some decision-making abilities and the ability to act by itself. While what the BBC called these “solders that never sleep” could help reduce battlefield deaths, they might also make countries more likely to go into battle, which would lead to more deaths overall, noted the scientists. The risks, they said, could be far greater than those posed by nuclear weapons.

Scientists called for a “ban on offensive(攻击性的) autonomous weapons beyond meaningful human control”, reported The Huffington Post.

In fact, in an interview with the BBC in 2014, Hawking warned that the “development of full artificial intelligence could spell the end of the human race”.

And according to the BBC, many leading thinkers have been thinking about the AI-powered killing machine of the not-too-distant future. “Killer robots could be here within years, not decades,” as Stuart Russell, professor of computer science at UC Berkeley, US, put it.

Authorities are gradually waking up to the risk of robot wars. Last May, for the first time, the United Nations brought governments together to begin talks on so-called killer robots in a hope of stopping such weapons while there is still time.

Meanwhile, there are scientists who are less worried. They believe all technologies have potential(潜力) for being used for good and evil ends, and argue that the ban called for by the open letter could close the door to developing AI technology that could save lives. “Technology can clearly do better than human beings in many cases,” Ronald Arkin, dean at the Georgia Institute of Technology in Atlanta, US, told The Christian Science Monitor. “If we are willing to turn over some of our decision making to these machines, we may actually get better outcomes.”

1.What does Steve Wozniak think the future robot technology might produce?

A. Artificial Intelligence.　　 B. Autonomous weapons.

C. Soldiers that never sleep.　　 D. Killing machines.

2.The underlined word “spell” in Paragraph 7 is closest in meaning to “______”.

A. cause　　 B. prevent

C. reach　　 D. change

3.What does Stuart Russell mean by saying “killer robots could be here within years, not decades.”?

A. Killer robots will visit UC Berkeley, US sooner than expected.

B. Killer robots will be produced and used sooner than expected.

C. Killer robots will speed up the development of AI in the near future.

D. Killer robots will kill these scientists in the near future.

4.What is the main idea of the text?

A. More and more of humans’ tasks are being taken over by robots.

B. Robots have decision-making abilities and the ability to act by itself.

C. Scientists called for a ban on the development of robot technology.

D. All technologies have potential for being used for good and evil ends.

高一英语阅读理解困难题查看答案及解析

My sister and I were flying by ourselves from our home in Kansas to a summer camp in Minnesota. Our plane had a two-hour stop at the airport in Omaha, Nebraska. A flight attendant took us to a souvenir shop, where a toy airplane looked just like the plane my sister and I were flying on. I really wanted that airplane. I had $10 and the plane cost $8. I had no idea what I needed to buy at camp, but I bought the plane anyway. When we reached the camp, I discovered that there were no showers! Instead, we bathed in a lake every night. I needed to buy special soap because the regular soap I brought had chemicals that could harm the fish. The special soap cost $4 at the camp store. However, I had only $2 left.

What upset me was that I couldn’t get clean without the soap, which was soon found by my teacher, Sally. I had to tell her that I had spent most of my money on a toy airplane. She laughed and explained to me that a budget was necessary and it was a plan for spending money to help make sure you set aside enough for things you need, like soap, before you buy fun things, like toys.

Sally gave me one of her extra(额外的) bottles of special soap. When I returned home, I decided to budget. I spent several weeks writing down everything I bought, just to get an idea of how I was already spending my money. Then I made my first weekly budget. My budget wasn’t always the same each week. For some weeks, I would have more in my “Money In” account because I did some jobs around the house. Once summer vacation started, I didn’t need to buy school lunches, so I had extra money to go to the neighborhood swimming pool or to give to the town animal shelter.

Budgeting was hard, sometimes. Whatever week it was, I always made sure that “Money In” equaled “Save and Spend.” That’s called making ends meet, and it’s how you make sure that the money you have will always be enough to cover your plans to spend and save.

1.Why did Sally give the writer one bottle of her special soap?

A. The writer’s usual soap did harm to his skin.

B. The writer needed to take showers at the camp.

C. The writer turned to Sally for it to get clean.

D. The writer’s money couldn't cover the special soap.

2.What did the writer learn about at the camp?

A. Spending and saving money.　　 B. Getting along with others.

C. Making more money.　　 D. Planning his daily life.

3.What can be the best title for the text?

A. My Summer Camp　　 B. My Weekly Budget

C. My Special Soap　　 D. My Lonely Flight

高一英语阅读理解中等难度题查看答案及解析

We like to consider ourselves the superior race, and we are. It’s true that we are getting to know more and more, and we actually live in “the information age”. Our human vanity(虚荣心) makes us believe that we really have to know everything! Surprisingly, we do not have this ability. The question “what is happening in the Bermuda Triangle” is the very proof.

Where is the Bermuda Triangle located? The mysterious triangle is believed to be situated between Florida, Bermuda and Puerto Rico, where too many unusual events have happened.

On December the 5^th 1945, five U.S. military planes took off from Florida on a clear day only to disappear over Bermuda. Furthermore, some other disappearances took place; in 1947, an American C54 plane simply disappeared at 100 miles from Bermuda; at 80 miles, a Star Tiger plane disappeared in 1948.

Even Columbus had trouble in Bermuda. Some of his journals were about the strange happenings there: “the waters are changing their colors” and “compasses are going wild”.

Maybe it’s why it is called the Devil’s triangle or the Atlantic cemetery.

Many hypotheses were stated in order to explain the strange events. In spite of these attempts, the mystery of the Bermuda Triangle remains unsolved.

Some people get to say that maybe aliens are involved in it. Other imaginative scientists relate the happenings in Bermuda to Einstein’s theory, saying that the missing ships and planes are translated to another dimension of space and time and taken into another world.

Maybe we will just have to wait to go to Heaven and ask the One who made it. The answer will surely be a satisfying one!

1.The writer may probably think that______.

2. Columbus’ journals told us that in Bermuda _______.

3.The underlined word “hypotheses” in the 6^th paragraph probably means______.

4.The purpose of the writer is to______.

高一英语阅读理解中等难度题查看答案及解析

At the beginning of every year we promise ourselves we will live a healthier life, and exercise more. The year tarts with the best of intentions, but many times we are unable to keep up with very high goals. Good news is that a healthy lifestyle is achievable and it's all about making small changes that make a difference.

News on healthy lifestyles says that the key is moderation and consistency. There are so many health and well-being products out there in the market promising many things. And although many may be true, select carefully.

The basics of a healthy lifestyle is maintaining a balanced diet and doing regular exercise. By eating well, it means really to make sure you include plenty of vegetables and fruit preferably in season in your diet, avoid fried and junk foods and foods high in sugar as well as processed foods. Eating fresh homemade meals rather than ready-made meals which are high in salt and sugar is always the better option. Reducing alcohol intake, drinking plenty of water and supplementing your diet with healthy snacks like nuts and seeds.

For external care choose natural skin care products and hair care oil. Natural beauty care involves using natural moisturizers like Argan oil, Coconut oil and Sweet Almond oil. These nourish the skin far more than counter creams full of chemicals. Skin reflects what we put inside of us, so a healthy diet with plenty of greens and healthy protein will make your skin brighter.

Of course exercise is essential but the key is regular and consistent exercise. So walking three times a week for 45 minutes is much more beneficial than a binge workout once a week.

1.Why can't we keep up with our goals according to the passage?

A. The goals are too high to achieve.

B. We have a large amount of work to do.

C. We are naturally lazy and never do exercise.

D. The reason isn't given in the passage.

2.It can be inferred from the passage that _______.

A. we should think twice before choosing heath products

B. the key to a healthy lifestyle is getting enough sleep

C. food high in salt and sugar is the best choice for us

D. we should walk once a day for a healthy lifestyle

3.What can we learn from the passage?

A. We can not form a healthy lifestyle if we are busy.

B. We can eat some junk food in order to save money.

C. Our skin shows whether we have a healthy diet.

D. Health products are not good for our health.

4.What does the passage mainly talk about?

A. How to achieve our goals.

B. The best way to take exercise.

C. How to make a difference in life.

D. Suggestions for a healthy lifestyle.

高一英语单项填空中等难度题查看答案及解析