Most of the time, the ground feels solid bene...

Most of the time, the ground feels solid beneath our feet. That's comforting. But it's also misleading because there's actually a lot going on underground. Masses of land (called plates) slip, slide, and bump against each other, slowly changing the shape of continents and oceans over millions and billions of years.

Scientists know that Earth formed about 4. 5 billion years ago. They also know that our planet was hot at first. As it cooled, its outermost layer, called the crust (地壳), eventually formed moving plates. Exactly when this shift happened, however, is an open question.

Now, an international group of researchers has an answer. They've found new evidence suggesting that Earth's crust started shifting at least 3. 8 billion years ago. The new estimate is 1. 3 billion years earlier than previous ones.

Not long before 3. 8 billion years ago, lots of small planets were hitting Earth, keeping its crust in a hot, melting state. After the hard crust formed, much of it sank at various times into the planet's hot insides. There, it melted before returning to the surface.

In some places, however, the crust never sank. One of the oldest such places is in Greenland, in an area called the Isua supracrustal (上地壳) belt. The rocky crust there is between 3. 7 and 3. 8 billion years old. The belt was once part of the seafloor, but now it is exposed to air.

The researchers recently took a close look at the Isua supracrustal belt. They noticed long, parallel cracks (裂缝) in the rock that have been filled in with a type of volcanic rock.

To explain this structure, the scientists propose that tension in the crust caused the seafloor to crack open long ago. Hot, liquid rock oozed from deep inside Earth to fill the cracks. Finally, the whole area cooled, forming what we see today.

That explanation, plus chemical clues inside the rock, suggests that the Isua supracrustal belt was once part of a plate under the ocean, beginning around 3. 8 billion years ago.

“It's a fantastic case of solving a jigsaw puzzle (拼图),” says one of the researchers. He notes that the puzzle was “ a very difficult one because these rocks are all very old and have been badly ruined".

1.What can we infer from the text?

A.The shapes of continents and oceans changed slowly.

B.The Earth's crust started shifting 1. 3 billion years ago.

C.The crust began to shift when the Earth was hot.

D.The hit from small planets made the Earth cool.

2.What do scientists know about the past of the Isua supracrustal belt?

A.It was once covered by the hot, liquid rock.

B.It remained under the deep sea.

C.It stayed hot and sinking.

D.It kept moving slowly.

3.The underlined phrase “oozed from” in Paragraph 7 is closest in meaning to

A.filled up gradually B.washed away quickly

C.flew out of slowly D.broke through suddenly

4.The text is mainly about 　　　　　　　 .

A.why the Earth cooled

B.how the Isua supracrustal belt formed

C.whether the ground beneath our feet is still

D.when Earth's crust began shifting

高二英语阅读选择中等难度题查看答案及解析

When you drink a glass of water or take a shower, think of glaciers. Why? Glaciers contain at least 75 percent of Earth’s fresh water－much more than all our planet’s lakes and rivers combined.

Glaciers grow by adding a new layer of snow each year. It’s easy for scientists to see the annual layers in an ice core by lighting it from beneath. They can then count the layers to determine the age of any section…much like you can count tree rings to determine a tree’s age.

Glaciers form by the accumulation, press and recrystallization of snow. It requires very specific conditions of climate and geography, which means that they are found in or high mountain regions where snowfall is heavy in winter, temperatures stay below freezing for long periods, and summers are cool.

“Hot” ice! Is that possible? Actually, ice is one of the hottest solids in existence, for it is unsteady and easy to melt when heated. Glaciers are always moving, but because ice is hot, they like liquids rather than solids. They slide over the ground on melt-water, a very thin layer of water from melted ice, and “creep” when their icy layers glide over one another because of their weight. Different parts of the same glacier slide or creep at different speeds. The center moves more rapidly than the sides; the surface moves more rapidly than the bottom, because the sides and bottom are restricted by friction. Most glaciers move several feet per year, while others “race” a few miles.

Unfortunately, glaciers are shrinking throughout the world. Melting glaciers will raise sea levels, forcing people to move from low-lying areas.

1.What does the underlined word “it” refer to in paragraph3?

A.The change of glaciers. B.The press of glaciers.

C.The accumulation of glaciers. D.The forming of glaciers.

2.Why do we say the ice is “hot”?

A.Because it keeps sliding or creeping. B.Because it is close to its melting point.

C.Because it absorbs too much sunshine. D.Because the surrounding temperature is low.

3.What is happening to glaciers?

A.They are spreading. B.They are disappearing.

C.They are rising. D.They are racing.

4.What is the best title of this passage?

A.The History of Glaciers. B.The Development of Glaciers.

C.The Secrets about Glaciers. D.The Danger Glaciers are facing.

高二英语阅读选择中等难度题查看答案及解析

Beneath our feet ______ that our life depends on for food and clothing.

A. the earth lay    B. the earth lies   C. lie the earth   D. lies the earth

高二英语单项填空简单题查看答案及解析

Before your feet hit the floor in the morning, think of something that you’re grateful for. Making this a focus for yourself and teaching your kids to do the same can have a significant impact on your emotional health during the COVID-19 Pandemic. 1. And if we begin our day with a feeling of hopeless and sadness, then we have let the negative feeling start going freely.

2. One way to counteract (消除) that feeling is by making regular schedule and sticking with it. When you organize and structure your life you know what to expect. Make sure you have a family routine. Remember, kids are used to routine and structure in schools. Many kids grow having consistency in their lives, which consequently helps them feel in control, something kids need now more than ever.

Not only will having plan help you stay centered, it will also keep you focused on the tasks at hand. A study published in the Annual Review of Psychology on psychological habits showed people rely on their routines and habits when they are stressed. 3. Establishing healthy routines could help with physical, emotional and mental health during difficult times like these.

4. The first item on the list should be to make your bed. According to a survey by OnePoll and Sleepopolis, which provides mattress reviews, people who make their beds regularly tend to report feeling happier and more productive. 5.

A.Go ahead and make a schedule.

B.Get up early and make your bed.

C.That helps them get through difficult times.

D.The heaviness of our current situation can quickly weigh us down.

E.Don’t forget, with COVID-19, you are not alone in how you are feeling.

F.Depression and anxiety can prevent you from feeling in control of your life.

G.Plus, if making your bed is on your list you can attain your first goal of the day.

高二英语七选五中等难度题查看答案及解析

Many of us choose to live in smaller spaces, especially in big cities, than we’d like owing to the high housing price1.

They’re cheaper to decorate. It can take thousands of dollars worth of decoration simply to make a large space look inviting. Small spaces, however, make decorating more simple and affordable. Instead of many pieces of large, expensive furniture, you only need a few to make your style sing. You’ll have plenty of money left for other things.

They’re easier to clean.2.The bigger the space, the longer it takes to organize and tidy up.No one wants to spend hours just cleaning. That’s why small spaces are welcomed by those who like being surrounded by order and cleanliness and don’t want to spend a ton of time and energy in keeping them that way.

3.It takes a lot to pay for heating, cooling and electricity, which can also cost much energy. When you compare the electricity bill of someone living in 500 square feet with that of someone living in 3,000 square feet, the difference can be great. 4. So it also does good to our beloved Mother Nature. They’re easier to personalize. Ever have you walked into a large home that feels more like a museum than the small home of someone you know? It’s usually not the most familiar or welcoming atmosphere. Actually, you want your home to show your personal style. 5.

A.They are more expensive to live in.

B.They’re more economical and greener to maintain.

C.Living in small homes makes your life more convenient.

D.That must be one of your favorite things in such a busy life.

E.Less energy is used and less waste is produced in small spaces.

F.It is not that bad, however, considering their advantages.

G.It is much easier to decorate a small home in your own style.

高二英语七选五中等难度题查看答案及解析

Extreme sports are any sport that involves great speed, height and danger. You need to be very fit to take part in these sports. It can be quite expensive because a lot of special equipment is needed. This type of sport is not usually a team sport like football or rugby. It is what is known as an individual sport because you are alone most of the time.

BASE JUMPING: This is the sport of using a parachute(降落伞) to jump from fixed objects like skyscrapers, high towers, bridges, domes, statues and steep, high mountains. Base jumping can be very dangerous as you compete to be the quickest to reach solid ground.

SKY DIVING: This sport also uses a parachute. Divers are taken up to a certain height in an aeroplane. They have parachutes strapped to their backs. They then jump out of the plane and freefall before opening their parachute at the correct moment. The parachute is to stop them from hitting the ground at a great speed, which would be very dangerous. The most important thing about this sport is knowing when exactly to open the parachute.

ROCK CLIMBING: This is the activity of climbing up and down very steep rock formations. This sport needs special equipment to keep the climbers safe. A climber has to have great strength of body and mind. It is better to climb in small groups, so that there is someone to help in the case of an emergency.

ICE CLIMBING: This is almost the same as rock climbing. The difference is that the climbers are climbing up and down steep walls of ice, such as frozen waterfalls. Special equipment is needed to keep climbers safe. Ice climbing is quite dangerous because ice changes as it melts or freezes. It is really difficult to know exactly how hard or how soft ice will be. Ice breaks easily so climbers need to concentrate very hard when they are climbing.

These are the sports on offer at Shanghai School of Extreme Sports. Now you have to decide which one you would like to do.

1.The text is meant to______.

A.offer a job description B.introduce extreme sports

C.advertise a school D.compare extreme sports

2.Extreme sports can cost a lot because______.

A.it is mostly individual sports

B.it needs a lot of special equipment

C.some of them can be very dangerous

D.they need lots of professional training

3.Why is base jumping dangerous sometimes?

A.You may hit the ground head-first.

B.You have to jump from a high place.

C.You must bear the weight of a parachute

D.You may reach the ground at a great speed.

4.In sky diving,the most important thing is to______.

A.open the parachute at the right time B.be brave enough to jump out

C.wear the parachute in the right way D.jump out at a certain height

5.The difference between rock climbing and ice climbing is that______.

A.rock climbing needs special equipment

B.ice changes easily when temperature changes

C.rock climbing should be done in small groups

D.a rock climber has to have great strength of body and mind

高二英语阅读选择简单题查看答案及解析

Pets are supposed to provide us with warm and fuzzy feelings, but most of the time they worry us. We need pet cameras to make sure they behave while we're not home and GPS dog collars to warn us when they break through the fence to run after rabbits. But Amazon can help you enjoy your holiday parties in peace with a sale on some of our favorite pet trackers.

Keep a close watch with the whistle 3 pet GPS tracker on sale for $49.98 at Amazon Not only that, Amazon also has the whistle go Explore health and location tracker on sale for $104.95.

Every Whistle tracker uses GPS tracking through AT&T cell towers and Google Maps to provide accurate locations. A Whistle subscription can cost $9.95 with a monthly plan or $6.95 per month if you choose a two-year commitment.

For anyone with a tighter budget to consider, a whistle 3 for less than $50 is the perfect match. You get important data such as how far they travel and how many calorie they burn in a day.

But if your fat pet needs to shed a few pounds, the Whistle Go Explore can help you monitor their progress. It provides daily stats on how much they sleep, scratch, and even lick themselves. Whistle then takes all of this information and overall activity level to provide you with weekly wellness reports. Not only that, Whistle even emails your vet with a 30-day health report so you can get an expert opinion.

Pet owners deserve peace of mind, so a deal on Whistle GPS pet trackers could be the absolute best gift for the dog lover in your life.

1.What do we know about pets according to paragraph 1?

A.They always make us worried.

B.They are supposed to give us warmth.

C.They should help us enjoy our holiday.

D.They usually behave well when we are not home.

2.Which will be your best choice if you don't have enough money?

A.Whistle GO Explore. B.Whistle GPS.

C.Whistle 3. D.ATt &T.

3.What does the underlined word “shed” in paragraph 5 probably mean?

A.increase B.lose

C.share D.put on

4.What type is probably the passage?

A.An announcement. B.An advertisement.

C.A report. D.a poster.

高二英语阅读理解中等难度题查看答案及解析

I’m about to begin my fifth season of tree planting. Each year, around this time, I have mixed feelings about the job. Never have I loved a job so much while hating it with equal measure. I mainly plant trees on the coast of British Columbia and get paid about 35 cents a tree. The job can be profitable. It gives planters the opportunity to lead a roaming (漫游的) lifestyle, with a temporary duty to spend a few months filling their bank accounts. But there are many challenges.

In the early hours of the morning, we join our teams and travel along rough roads deep into the woodlands. When stepping out of the trucks, often in the pouring rain, we’re faced with a steep chunk of land that’s just been logged (砍伐). I step into the rain and fill my bags with hundreds of tiny trees. Experienced tree-planters treat this more like a sport than a job, thus lighting up the mood.

Once our bags are full, we immediately charge up that hillside before feeling reluctant to go. We jump from log to log, and if they roll out from under our feet, we grab onto whatever within reach and swing around like monkeys. We push through stinging bushes. We stumble and fall constantly, always pushing ourselves to go faster among groups of insects that we often breathe in.

While tree planting, I come across someone else, a self I thought I knew. It is a person I try to come to peace with on those hillsides, during those strange days of isolation (隔绝) and deep thinking.

Tree planting is a lab of self-examination and growth, where you face the worst and the best in your nature and push yourself as hard as you can. And, a new version of yourself awaits at the end of the experience.

1.Which of the following is true about the writer’s job?

A.It is a bittersweet job to some degree.

B.He works 12 months a year.

C.He can make a fortune with this job.

D.He is stuck in a place all year round.

2.What challenges will they meet when planting trees?

A.They feel reluctant to collect tiny trees.

B.Workers’ mood needs to be lighted up on the truck.

C.They will have to help each other when planting trees.

D.The conditions are really tough on the hillside.

3.In what way has the writer benefited most by planting trees?

A.He has smoothed away many difficulties.

B.He has discovered a whole new himself.

C.He has developed tree-planting skills.

D.He has gained lifelong friendship.

高二英语阅读选择中等难度题查看答案及解析

The Chinese-born American architect Ieoh Ming Pei is one of the most creative architects of our times. He has incorporated both eastern and western ideas into his designs.

Ieoh Ming Pei was born in Guangzhou, China on April 26, 1917. His father was a famous banker. In 1935, at the age of 17, he came to the United States to study architecture at Massachusetts Institute of Technology. In 1942, he entered the Harvard Graduate School of Design.

In 1964, Jacqueline Kennedy selected Pei to design the Kennedy library. After that he became well-known all of the world. People named it one of the Ten Best Buildings in the United States. In 1968, Pei started work on the East Wing of the National Gallery of Art, in Washington D.C.. Over one million people visited the building during its first 50 days in existence.

Following the East Wing project Pei's fame has continued to grow widely. In 1983, French President commissioned(委任) Pei to help make the Louvre more modern. Ten years later, the completion of Pei’s glass pyramid at the Louvre created a new historic landmark for Paris. Pei described it as, "the greatest challenge and greatest accomplishment of my career." At Fragrant Hill, a 300-room hotel in the Chinese capital, Pei has attempted to bring to his native China his often-quoted "third way of making buildings." Avoiding both a complete copying of traditional Chinese motifs(特色) as well as the modernism of the West, Pei has managed, at Fragrant Hill, to make one of his most eloquent(有说服力的) statements.

Pei has designed nearly 50 projects in the United States and abroad. About half of these projects have won major awards. Pei has been awarded the highest honors from nations over the world. In 1990, Pei was awarded the Medal of Freedom by President George Bush for his contributions to world peace and service to the US government.

56. Which is the right order of the events of Ieoh Ming Pei?

Pei started work on the East Wing of the National Gallery of Art, in Washington DC.

Ieoh Ming Pei entered the Harvard Graduate School of Design.

The completion of Pei’s glass pyramid at the Louvre created a new historic landmark for Paris.

Ieoh Ming Pei was selected to design the Kennedy library.

Ieoh Ming Pei was born in Guangzhou.

Pei was awarded the Medal of Freedom by President George Bush.

Ieoh Ming Pei came to Massachusetts Institute of Technology.

French President commissioned Pei to help make the Louvre more modern.

A. e-g-d-b-a-h-c-f     B. e-g-b-d-a-h-c-f     C. e-g-b-d-h-a-c-f       D. e-g-b-d-a-h-f-c

1.The underlined word “incorporate” can be replaced by __________.

2.It was ____________ that Ieoh Ming Pei became world-famous.

3. __________ is an excellent building that shows both the traditional Chinese motifs and the modernism of the West.

4. We can infer that about _________of Ieoh Ming Pei’s projects have won major awards.

高二英语阅读理解简单题查看答案及解析

One of the most popular comments I have heard about time is that we need to balance our time in order to live a more balanced life. We often feel that if we are focused and devoted, happy and positive, loving and generous, healthy and energetic, then we will be balanced people. And if the pie chart of our daily life has just the right ratios(比率) of work, life, family, health, and service, then our time will be balanced.

The problem with trying hard for balance is that most people’s understanding of this state is so different from what balance actually is! Balance is not about walking around with a bunch of positive qualities; it’s about walking on the tight rope between the poles within us and the circumstances outside of us. Strictly speaking, in order to achieve true balance, we should accept we may have some shortcomings. We should accept and love the most challenging parts of life because they offer gifts for full, real living.

Even though we measure time in a linear(线状的) way, time is and will always be asymmetrical(不均匀的). One moment is not like another, just like each day is different and each tide that rolls in is different from the previous one. This is why it is impossible to balance our time through a pie chart in a time management book. Exploring asymmetrical time allows us to move in line with an unbalanced time and thus regain our relative balance. If we stop measuring ourselves against the standards of linear time, we can accept ourselves more fully. New possibilities arise as we accept the uncertainty.

1.Why does the author think it’s difficult to achieve balance in life?

A. People don’t know the true meaning of balance.

B. People may not have enough good qualities.

C. People cannot create their pie charts of daily life.

D. People fail to realize the qualities they really need.

2.In the author’s opinion, what does a balanced life mean?

A. We should arrange our time wisely.

B. We should try to believe ourselves.

C. We should learn to improve ourselves and our lives.

D. We should accept the bad aspects of ourselves and life.

3.What does the last paragraph mainly want to tell us?

A. Uncertainty can help build up confidence.

B. It is difficult for us to accept ourselves fully.

C. There are always uncertain things occurring in life.

D. New possibilities can help us achieve balance in life.

4.What may be the best title for the text?

A. The true meaning of time

B. Seeking relative balance

C. Struggle for a balanced life

D. Popular comments about time

高二英语阅读理解极难题查看答案及解析