It’s easy to think that the globe’s vast ocea...

It’s easy to think that the globe’s vast oceans would be effective barriers to the movement of land animals. An elephant can’t swim across the Pacific, after all. But it turns out that plenty of plants and animals have unintentionally floated across oceans from one continent to another. Now comes evidence that tiny, trapdoor spiders (蜘蛛) made such a journey millions of years ago.

Moggridgea rainbowi spiders can be found on Kangaroo Island, which sits off the south coast of Australia. These spiders build a silk-lined hole in the ground, notes Sophie Harrison, a biologist in Australia. The hole and trapdoor provide these spiders with shelter and protection. It also provides them an out-of-sight spot from which to wait for approaching creatures.

There is evidence, though, that the ancestors of them might have traveled millions of meters to get to Australia from Africa. That isn’t as unlikely as it might at first seem. Australia used to be connected to other continents, long ago, as part of a supercontinent called Gondwana. And humans have been known to transport species all over the planet. But there’s a third option. The spiders might have rafted (乘筏) long distances across the sea.

To figure out which story was most likely true, Harrison and her colleagues looked at the spider’s genes. They looked at the genes in seven Moggridgea rainbowi spiders from Kangaroo, and five species of Moggridgea spiders from South Africa. The Australian and African spiders split off from a common ancestor some 2 million to 16 million years ago, the genes showed.

If a large swatch of land washes into the sea, filled with arachnids (蛛形纲动物), the spiders may be able to hide themselves throughout the journey. Plus, they can “hold their breath” and survive on stored oxygen during periods of temporary flooding, the researchers note.

1.What is the common belief about land animals according to the text?

A.They are sensitive to natural disasters.

B.They are unlikely to move across oceans.

C.They can’t make a long ocean voyage.

D.They float across oceans accidentally.

2.What does the underlined word “them” in Paragraph 3 refer to?

A.Biologists. B.Australians.

C.The spiders. D.The creatures.

3.How did the researchers conclude Australian and African spiders are from a common ancestor?

A.By comparing their genes.

B.By observing their living habits.

C.By making changes to their genes.

D.By studying their physical characteristics.

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

A.These Spiders Traveled Globally to Hide Themselves

B.These Spiders Became More Adaptive When Traveling

C.These Spiders Crossed an Ocean to Australia for Survival

D.These Spiders Crossed an Ocean to Become Australians naturally

高三英语阅读理解中等难度题查看答案及解析

I think that conflict is unlikely to happen, but if it _____, the interests of both sides would be severely damaged.

A.would occur B.had occurred C.were to occur D.occurs

高三英语单项填空中等难度题查看答案及解析

I think that's unlikely to happen, but if that_______, both America's and China's interest would be severely damaged.

A.should occur B. occurs

C. had occurred         D. is going to occur

高三英语单项填空简单题查看答案及解析

听下面一段较长对话，回答以下小题。

1.How does the woman feel about studying psychology?

A. It would be easy to find a job.

B. She would get good grades.

C. It would help her writing.

2.What degree does the woman already have?

A. A Ph.D. degree.　　 B. A master’s degree.　　 C. BA. degree.

3.How will the woman start her new career?

A. Start at the bottom and keep working.

B. Go straight to Wall Street.

C. Wait patiently for the perfect opportunity.

4.What does the man think about the woman’s idea?

A. Her kids might not support her.

B. It might be hard to make money.

C. She might have problems making friends.

高三英语长对话困难题查看答案及解析

You'd be forgiven for thinking that running after children each day would leave parents in the best shape of their lives.But a study has found that the mothers and fathers of young children are more unhealthy than their childless peers(同龄人）.

Mothers with young children are heavier and eat more calories and fatty foods,and consume more sugary dinks than chidless women,scientists said.And both sexes are less active than those in their age group without children.

Parents often choose quick,easily preparesd foods that are high in fat and calories,and by choosing these foods they may in turn serve them to their children,forming a cycle of unhealthy diet.

Dr.Berge,one of the study authors,said:“This isn't a study about blame,this is about spotting a very high-risk time period for parents that doctors should be aware of ,so they can offer solutions(解决办法）.”

According to the study ,mothers ate more fatty foods and drank about seven sugary drinks weekly,equal to about four chidless women.They also had an average of 2,360 calories daily,368 calories more than women without children,With that many calorise,women that age would need to be active to avoid to avoid gaining weight.

Fathers ate about the same amount of daily calories childless men and both had an average boby-mass index(指数）,but fathersgot less physical activity—about five hours weekly ,compared to almost seven hours among chidless men.

The study has several limitations－there's no data on how many women reccently had babies.Ther's also no information on the number of single parents,who likely face diet and exercise challenges.Sarah Kriger,an American dietician who works with new mothers said some of the mothers may have had postpartum(产后）depression,which might affect their eating and exercise habits.

1.What does the author mainly aim to tell us in the passage?

2.The underlined part“in the best shape”in the first paragraph means that a person________.

3.Which of the following is NOT mentioned about mothers with children?

4.What Dr.Berge says in Paragraph 4 suggests that________.

5.We can learn from the last paragraph that________.

高三英语阅读理解中等难度题查看答案及解析

If I ________ your advice then, I think that the crops could be growing better.

A．took　     B．would have taken

C．had taken　     D．have taken

高三英语单项填空中等难度题查看答案及解析

Swimming across the English Channel is no easy feat. In addition to the strong ocean currents, swimmers also have to endure extremely cold temperatures. However, don't tell that to Sarah Thomas. The 37-year-oki American recently became the first person ever to swim across it not once, hut four times non-stop!

"I just can't believe I did it/' Thomas told the BBC after the swim. "I'm really just pretty numb. There was a lot of people on the beach to meet me and wish me well, and it was really nice of them, but I feel just mostly stunned."

What makes Thomas's achievement even more remarkable is that just a year ago, in 2018, she was undergoing treatment for breast cancer. She said that fighting the strong currents was hard. But even worse was “dealing with the saltwater... it really hurts your throat your mouth and your tongue”, she said. “I got stung(蛰)in the face by a jellyfish. The water wasn't as cold as I thought it might be, but it was still very cold."

Thomas’s record-breaking journey began just past midnight on Sunday, September 15, 2019, when she dove into the waters off the shore of Dover, England. Though the swim was initially meant to be about 80 miles, strong currents forced the athlete to change course several times, lengthening the total distance by about 50 miles. By the time she appeared from the water at 6:30 a.m. local time on Tuesday, September 17, 2019, she had been in the water for 54 hours and 13 minutes and swum a total of 133 miles! Even more impressive, Thomas achieved the astonishing feat in a regular swimsuit. Her only aids were swim goggles, one cap, a nose clip, and earplugs。.

This is not the first time Thomas has swum across the English Channel. She has done it twice before, in 2012 and 2016. She told filmmaker Jon Washer, who is making a documentary about her swim, “As I was doing 20 mile swims, it occurred to me that I could do more and I wanted to see what that more was." The swimmer, who is being praised “an absolute legend" by the CS&PF, has indeed shown the world what she is capable of However, we have a feeling she is not done yet!

1.By mentioning “Swimming across the English Channel is no easy feat", the writer aims to

A.warn people not to swim across it

B.arouse people' interest in swimming

C.set off Sa rah Thomas's achievements

D.stress the difficulties swimmers have to conquer

2.What does the underlined word “stunned" mean in Paragraph 2?

A.Surprised. B.Satisfied. C.Doubtful. D.Regretful.

3.What troubled Thomas most during swimming?

A.Strong currents. B.Sea water.

C.Jellyfish. D.Water temperature.

4.What does Paragraph 4 mainly focus on?

A.The long distance she covered.

B.The ordinary equipment she possessed.

C.The record-breaking time she stayed in water.

D.The impressive determination she displayed.

5.What can we infer from the last Paragraph?

A.A documentary is being made about her achievements.

B.She has swum across the Channel more than once.

C.She will probably plan to swim the Channel in the future.

D.She is capable of doing everything she wants to achieve.

高三英语阅读理解困难题查看答案及解析

Sri Lanka is known as the “Pearl of the Indian Ocean”, and it is easy to see why. This little country never fails to please visitors.

Arrive

The national airline is Sri Lankan Airlines, which flies from Colombo to London and a couple of other European cities. The country’s main airport is Colombo Bandaranaike, located 29km north of the capital city.

Why now?

The best time to visit Sri Lanka’s southern beaches is from November to April. So by going early in the season, you’ll get the best weather. Also in November, Deepavali, known as “Diwali” or the “Festival of Lights”, is Sri Lanka’s main religious festival, celebrated throughout the country.

See

There is plenty to see in Sri Lanka. The ancient capital cities of Polonnaruwa and Anuradhapura are worth seeing, and so are many outstanding ruins. Other mustsees are the rock fortress (要塞) of Sigiriya, towering over the jungle as far as the eye can see, and Dambulla’s cave temple, the country’s largest and best preserved. Both are UNESCO World Heritage (遗产) Sites. Kandy is a picture-like town, which was the last stronghold of the Kandyan Kings. Today it is a cultural relic centre where age-old customs, arts, and crafts remain.

Do

Sri Lanka owns about 1,600km of beautiful palm-shaded beaches as well as warm, pure seas and colorful coral reefs. You can explore the underwater world, and surfing and diving are available too. Away from the shore, wildlife is a big draw for Sri Lanka, and Yala National Park is one of the best places in the word to see wild animals including leopards (豹) and elephants.

Taste

Sri Lanka is celebrated for its excellent food, with a particular emphasis on fresh fruit and vegetables on menus everywhere. Fish and seafood are a big part of the local diet.

Did you know?

Sri Lanka is known for its tea, but it is also the world’s largest producer and exporter of cinnamon(肉桂).

1.Which of the following is a cultural relic centre of Sri Lanka?

A. Kandy.　　　　　 B. Anuradhapura.

C. Polonnaruwa.　　 D. Colombo.

2.If you want to know something about “Diwali”, you’d better go there in　　　　　　 .

A. September.　　　 B. October.　　　　　 C. November.　　　 D. May.

3.We learn from the passage that Sri Lanka 　　　　 .

A. is in the Pacific Ocean

B. is famous for its excellent food

C. is the world’s largest producer of tea

D. has only flights to London

4.The author wrote the article in order to　　　　 .

A. introduce the picturesque landscape of Sri Lanka

B. let readers know what is famous for in Sri Lanka

C. make Sri Lanka well known throughout the world

D. let people get more travel information about Sri Lanka

高三英语阅读理解中等难度题查看答案及解析

Sri Lanka is known as the “Pearl of the Indian Ocean”, and it is easy to see why. This little country never fails to please visitors.

Arrive

The national airline is Sri Lankan Airlines, which flies from Colombo to London and a couple of other European cities. The country,s main airport is Colombo Bandaranaike, located 29km north of the capital city.

Best visiting-time

The best time to visit Sri Lanka’s southern beaches is from November to April. So by going early in the season, you’ll get the best weather. Also in November, Deepavali, known as “Diwali” or the “Festival of Lights”, is Sri Lanka,s main religious festival, celebrated throughout the country.

See

There is plenty to see in Sri Lanka. The ancient capital cities of Polonnaruwa and Anuradhapura are worth seeing, and so are many outstanding ruins. Other mustsees are the rock fortress (要塞) of Sigiriya, towering over the jungle as far as the eye can see, and Dambulla,s cave temple, the country,s largest and best preserved. Both are UNESCO World Heritage (遗产) Sites. Kandy is a picturesque town, which was the last stronghold of the Kandyan Kings. Today it is a cultural relic centre where old customs, arts, and crafts remain.

Do Sri Lanka owns about 1,600 km of beautiful palm-shaded beaches as well as warm, pure seas and colorful coral reefs. You can explore the underwater world, and surfing and diving are available too. Away from the shore, wildlife is a big draw for Sri Lanka, and Yala National Park is one of the best places in the word to see wild animals including leopards (豹) and elephants.

Taste

Sri Lanka is celebrated for its excellent food, with a particular emphasis on fresh fruit and vegetables on menus everywhere. Fish and seafood are a big part of the local diet.

Did you know? Sri Lanka is known for its tea, but it is also the world ’s largest producer and exporter of cinnamon(肉桂).

60. Which of the following is a cultural relic centre of Sri Lanka?

A. Kandy.             B. Anuradhapura.           C. Polonnaruwa.        D. Colombo.

61.If you want to know something about “Diwali”, you’ d better go there in________.

A. September.     B. October.          C. November.     D. May.

62. We learn from the passage that Sri Lanka         .

A. is in the Pacific Ocean              B. is famous for its excellent food

C. is the world,s largest producer of tea     D. has only flights to London

63. The author wrote the article in order to         .

A. introduce the picturesque landscape of Sri Lanka

B. let readers know what is famous for in Sri Lanka

C. make Sri Lanka well known throughout the world

D. let people get more travel information about Sri Lanka

高三英语阅读理解简单题查看答案及解析

Space is where our future is — trips to the Moon, Mars and beyond. Most people would think that aside from comets (彗星) and stars, there is little else out there. But, since our space journey started we have left so much trash there that scientists are now concerned that if we don't clean it up, we may all be in mortal（致命的）danger.

The first piece of space junk was created in 1964, when the American satellite Vanguard I stopped operating and lost its connection with the ground center. However, since it kept orbiting around the Earth without any consequences, scientists became increasingly comfortable abandoning things that no longer served any useful purpose in space.

It is estimated that there are now over 500,000 pieces of man-made trash orbiting the Earth at speeds of up to 17,500 miles per hour. The junk varies from tiny pieces of paint chipped off rockets to cameras, huge fuel tanks, and even odd items like the million-dollar tool kit that astronaut Heidemarie Stefanyshyn Piper lost during a spacewalk.

The major problem with the space trash is that it may hit working satellites and damage traveling spacecraft. Moreover, pieces of junk may collide with each other and break into pieces which fall back to the Earth. To avoid this, scientists have invented several ways for clearing the sky. Ground stations have been built to monitor larger pieces of space trash to prevent them from crashing into working satellites or space shuttles. Future plans include a cooperative effort among many nations to stop littering in space and to clean up the trash already there.

1.What was the first piece of man-made space trash ?

A. A camera.　　 B. A tool kit.

C. A fuel tank.　　 D. A broken satellite.

2.Why were scientists NOT concerned about space trash in the beginning ?

A. It no longer served any useful purpose.

B. It was millions of miles away from the Earth.

C. It did not cause any problems.

D. It was regarded as similar to comets and stars.

3.Which of the following statements is true about space junk ?

A. It is huge, heavy machines.

B. It never changes position.

C. It floats slowly around the Earth.

D. It may cause problems for space shuttles.

4.What has been done about the space trash problem ?

A. Scientists have cleaned up most of the trash.

B. Large pieces of space trash are being closely watched.

C. Many nations have worked together to stop polluting space.

D. Ground stations are built to help store the trash properly in space.

高三英语阅读理解中等难度题查看答案及解析