It has been one of the deadliest climbing sea...

It has been one of the deadliest climbing seasons on Everest, with at least 10 deaths. And at least some seem to have been _________.

The problem hasn’t beenavalanches(雪崩）, blizzards or high winds. Experienced climbers and industry leaders _________ too many people on the mountain, in general, and too many inexperienced climbers, in particular.

Fly-by-night adventure companies are taking up untrained climbers who pose a risk to everyone on the mountain. And the Nepalese government, _________ for every climbing dollar it can get, has issued more permits than Everest can safely _________, some experienced mountaineers say.

Add to that Everest’s unmatched _________ to a growing body of thrill-seekers the world over. And the fact that Nepal, one of Asians poorest nations and the site of most Everest climbs, has a long record of bad regulations and mismanagement.

To reach the peak, climbers _________ every pound of equipment they can and take with them just enough cans of compressed oxygen to make it to the top and back down. It is hard to think straight at that altitude（海拔）.

According to the climbers, some of the deaths this year were caused by people getting held up in the long lines on the last 1,000 feet or so of the climb, unable to get up and down fast enough to _________ their oxygen supply. Others were simply not fit enough to be on the mountain _________.

Nepal has no _________ rules about who can climb Everest, and experienced climbers say that is a direct reason for _________. “You have to reach certain standards to do the Ironman,” said Alan Arnett, a remarkable Everest climber. “But you don’t have to _________ to climb the highest mountain in the world? What’s wrong with this picture?”

The last time 10 or more people died on Everest was in 2015, during an avalanche. By some measures, the Everest machine has only gotten more out of _________. Last year, experienced climbers, insurance companies and news organizations _________ a far-reaching scheme by guides, helicopter companies and hospitals to trick millions of dollars from insurance companies byevacuating(疏散) climbers with _________ signs of altitude sickness.

Despite all the problems, this year the Nepali government issued a record number of permits, 381, as part of a bigger _________ to commercialize the mountain. Climbers say the permit numbers have been going up steadily each year and that this year the traffic jams were heavier than ever.

1.A.recognizable B.sustainable C.avoidable D.feasible

2.A.burden B.blame C.border D.balance

3.A.hungry B.critical C.jealousy D.hesitant

4.A.favor B.extend C.grant D.handle

5.A.appeal B.adjustment C.adaption D.agreement

6.A.catch sight of B.make use of C.get rid of D.take hold of

7.A.remove B.refill C.recycle D.release

8.A.for the first time B.at long last C.from time to time D.in the first place

9.A.strict B.social C.scientific D.creative

10.A.discomfort B.decay C.disadvantage D.disaster

11.A.manage B.qualify C.promise D.schedule

12.A.contact B.touch C.control D.power

13.A.activated B.exposed C.introduced D.dismissed

14.A.inferior B.minor C.superior D.major

15.A.push B.prospect C.pattern D.patent

高三英语完形填空困难题查看答案及解析

In no country, ________ Britain, it has been said, can one experience four seasons in the course of a single day.

A. other than       B. more than           C. better than      D. rather than

高三英语单项填空中等难度题查看答案及解析

It has been said that one can experience four seasons in the course of a single day in no  country        Britain．

A．other than    B．more than    C．better than       D．rather than

高三英语单项填空简单题查看答案及解析

In no country ______ Britain, it has been said, can one experience four seasons in the course of a single day．

A．other than                                     B．more than

C．better than                                     D．rather than

高三英语单项填空中等难度题查看答案及解析

In no country____________Britain, it has been said? can one experience four seasons in the course of a single day．

A．other than      B．rather than       C．more than        D．less than

高三英语单项填空困难题查看答案及解析

It's baseball season again，and Hank Snydder is back on the field.He has been back from the accident that kept him out of the game for the season last year，and that cost the Muggers last year's championship.Baseball fans in the city of Midvale are happy and George Brenner，the Muggers' owner，is happy too, because when Hank plays the team wins and the games sell out.“Last year's attendance was all time low when Hank was out，”said Brenner.“We're glad to have him back in uniform.”

Needless to say，the Muggers pay Hank well.But other teams have offered him a million dollars.Still，Hank has been faithful to the Muggers up to now.But there is a rumor(谣传)that Hank might play for the Suffers of Sun City next year.A newspaper reporter asked Hank if there was any truth in it.He said.“Nothing has been decided，but I have to admit that I could be leaving Midvale after this season.”What about another rumor that Hank might be getting married? “That's true.” Hank replied，“and I'm very happy about it.”

There is no need to ask how Midvale or George Brenner would feel about losing Hank.But is Hank completely happy about the changes that may be taking place in his life? “Only one thing troubles me，”he said.“I've always loved the Muggers' blue uniforms.It will take me some time to get used to the Suffers' green and gold uniforms.”

1.Hank Snydder didn't play for the Muggers last year because ________.

A．there were no baseball matches

B．the club didn't pay him enough money

C．other players had accidents

D．something had happened to him

2.The Muggers didn't win the championship of last season ________.

A．because the players of the Muggers didn't take part in the games

B．because of Hank Snydder's absence

C．because all the players didn't try their best

D．because the Muggers hadn't hoped to win it

3.Which of the following statements is not mentioned in the passage?

A．Hank Snydder still plays for the Muggers.

B．Hank Snydder has been loyal to the Muggers.

C．Hank Snydder might be getting married.

D．Hank Snydder has some trouble with his partners.

4.If Hank Snydder joins the Suffers of Sun City next year，________.

A．the owner of the Muggers will feel happy

B．the owner of the Muggers will require him to return all the money

C．it may be a great loss to the Muggers

D．he will play for the baseball team for nothing

高三英语阅读理解中等难度题查看答案及解析

One of the most important recent medical breakthroughs has been the impact of gut flora（肠道菌群）on overall health. This dynamic mix of bacteria in the digestive tract（消化道）may affect everything from obesity to asthma（哮喘）．

The Gut-Mood Link

Anyone who's ever experienced "butterflies" in his or her stomach knows that the gut and the brain are connected. But until recently, scientists hadn't realized that the trillions of bacteria in our digestive tract may be driving the relationship.

One recent experiment suggests that you can control calm. Canadian researchers gave healthy mice a mixture of antibiotics, which change the makeup of GI-tract（胃肠道）bacteria. Over two weeks, some animals became more anxious and some less, depending on which drugs they received. In another study, when gut bacteria from calm mice were transferred to anxious mice, the jittery（紧张的）creatures seemed less nervous.

UCLA professor Kirsten Tillisch, doctor of medicine, recently had healthy women eat a yogurt

rich in certain types of "good" probiotic（益生菌的）bacteria. Two 'Control groups ate yogurt without such bacteria or ate nothing. Brain scans of the probiotic-yogurt eaters indicated changes in regions that could be associated with a less-anxious response in fearful or stressful situations compared with the control groups.

Scientists are even exploring whether gut microbes（微生物）might treat some brain disorders. A new study in Cell found that mice with features of autism（自ICJ症）given a type of bacteria in healthy human GI tracts exhibited less autism-like behavior. In a recent case report, a Boston ps. chiatrist says a course of certain probiotics and antibiotics helped relieve a patient's compulsive disorder. -We tend to focus on how your mood affects your body from the top down, not the bottom up," says Dr. Tillisch. "Now we know that the gut affects how your brain responds to the environment- it's a remarkable change in thinking.”

How Bacteria Talk to the Brain Scientists aren't sure how gut flora affect brain chemistry. One theory is that the bacteria access pathways along the nerve, the main highway in the nervous system that links the brain to the gut. Another is that the bacteria influence the immune system, releasing chemicals that affect conditions like depression. Finally, researchers believe that bacteria produce or affect the metabolism（新陈代泻'i) of chemicals, which change brain function.

Dr. Tillisch told me that patients always ask which probiotics will lift their mood．Her answer:

"We don't know yet, but we hope to one day." In the future, patients might receive probiotics or transplant（移植） in which bacteria from the gut of a healthy person are transferred to the gut of a sic': one-to prevent or treat mental health issues. But these approaches are years away from primary time．Until then, a diet rich in fruit and veggies helps cultivate（培养）better-balanced microbes than a typical Western diet high in animal and processed products. Avoiding unnecessary antibiotics, particularly in early childhood, may also establish healthier gut bacteria.

1. According to the passage, gut bacteria might help us in many ways EXCEPT＿_．

A. lightening our mood B. treating autism

C. relieving depression D. transplanting gut flora

2.The missing sentence "Everyday foods may also affect the composition of gut bacteria, and in

turn, brain chemistry." could be put before＿_·

A. Paragraph 2 B. Paragraph 3

C. Paragraph 4 D. Paragraph 5

3.Which of the following can be the best subtitle for the last paragraph?

A. Cultivating a Happier Gut

B. Growing Bacteria in the Future

C. Balancing Microbes and Diet

D. Living a Happy Healthy Life

高三英语阅读理解中等难度题查看答案及解析

Man has been on the earth about one million years. He_1.　　 (manage) to live on every part of the planet, even though some climates have made life difficult. It is thought 2. (different) in skin color are the result of climatic__3.　 .(adapt). For example, people with skin colors of yellow, red, and olive, generally come from areas 4._ they have had to adapt to other climates. Man's size also seems to　　 5. (various) according to climate. People living in colder regions are generally larger than6._ living in hotter ones. This difference might be explained_7. the fact that big people have less skin compared to weight than do small people. The less skin a person has relative to his weight, the easier　 8. 　 is for him to keep warm. As part of the natural environment, climate greatly affects human activities. Climate has a significant　 9.　 　 0n agriculture. Climatic factors restrict the kinds of crops that can be grown. Man changes his living habits in order to adjust to climate, but climate 10.　　 (change) as well, though more slowly. By learning more about his climate, man will find a way to adapt to or control it and live a more comfortable life.

高三英语语法填空中等难度题查看答案及解析

Gold is one of the rarest materials on Earth and has always been considered a valuable and precious resource. It's very likely that someone in your family owns something made of gold, especially since China is one of the world's biggest buyers of gold jewellery. It's even in our smartphones - they contain parts made from this expensive material.

But where does this beautiful metal actually come from? The answer: outer space.

This August, Chinese scientists became the first in the world to witness gravitational waves（引力波）caused by the collision of neutron (中子）stars, reported Xinhua News Agency.

The sight was witnessed at China's Kunlun Antarctic Station at the South Pole, and Insight, China’s first X-ray astronomical satellite, also contributed to the discovery.

Although collisions of black holes have been recorded before, this was the first time that two neutron stars were known to have collided. It's believed that such collisions lead to huge explosions of energy, and even to the creation of precious metals such as gold and silver.

“The collision of neutron stars is like a very large gold factory in the universe,” Jin Zhiping，a researcher at the Purple Mountain Observatory of the Chinese Academy of Sciences, told Xinhua.

According to an article published by space.com, scientists have long believed gold and other materials are created in this way, but it wasn't until the recent collision that their theory was confirmed.

“The origin of the really heaviest chemical elements in the universe had confused the scientific community for quite a long time,” Hans-Thomas Janka, a senior scientist at the Max Planck Institute for Astrophysics in Germany, said in a news release. “Now, we have the first observational proof for neutron star mergers(合并) as sources.”

Indeed, the recently observed collision is thought to have produced an amount of gold that would weigh 10 times more than Earth, according to New Scientist

Don’t expect to be showered in gold any time soon, however. The collision actually took place 130 million years ago, taking all that time for the event's light to reach Earth.

But at least if you want to see a piece of space up close, all you have to do is to look at the ring on your mom's finger - or the smartphone in your pocket.

1.What's the author's purpose of writing the first two paragraphs?

A.To emphasize the rareness of gold.

B.To list some uses of gold in daily life.

C.To explain the reasons for the popularity of gold.

D.To interest readers about the source of gold.

2.What would the collision of neutron stars lead to according to Xinhua?

A.The creation of black holes.

B.The death of the stars.

C.The disappearance of gravitational waves.

D.The creation of gold.

3.What’s the text mainly about?

A.China’s Kunlun Antarctic Station does research into gold.

B.Collisions between two neutron stars result in gold

C.Collisions contribute to the discovery.

D.Gold is considered a valuable and precious rescource.

4.What can we learn from the article?

A.The amount of gold produced by the collision was very small.

B.The collision was the largest reported in history.

C.China played a big role in the new discovery.

D.The collision took place 130 years ago.

高三英语阅读理解中等难度题查看答案及解析

Gold is one of the rarest materials on Earth and has always been considered a valuable and precious resource. It's very likely that someone in your family owns something made of gold, especially since China is one of the world's biggest buyers of gold jewellery. It's even in our smartphones - they contain parts made from this expensive material.

But where does this beautiful metal actually come from? The answer: outer space.

This August, Chinese scientists became the first in the world to witness gravitational waves（引力波）caused by the collision of neutron (中子）stars, reported Xinhua News Agency.

The sight was witnessed at China's Kunlun Antarctic Station at the South Pole, and Insight, China’s first X-ray astronomical satellite, also contributed to the discovery.

Although collisions of black holes have been recorded before, this was the first time that two neutron stars were known to have collided. It's believed that such collisions lead to huge explosions of energy, and even to the creation of precious metals such as gold and silver.

“The collision of neutron stars is like a very large gold factory in the universe,” Jin Zhiping，a researcher at the Purple Mountain Observatory of the Chinese Academy of Sciences, told Xinhua.

According to an article published by space.com, scientists have long believed gold and other materials are created in this way, but it wasn't until the recent collision that their theory was confirmed.

“The origin of the really heaviest chemical elements in the universe had confused the scientific community for quite a long time,” Hans-Thomas Janka, a senior scientist at the Max Planck Institute for Astrophysics in Germany, said in a news release. “Now, we have the first observational proof for neutron star mergers(合并) as sources.”

Indeed, the recently observed collision is thought to have produced an amount of gold that would weigh 10 times more than Earth, according to New Scientist

Don’t expect to be showered in gold any time soon, however. The collision actually took place 130 million years ago, taking all that time for the event's light to reach Earth.

But at least if you want to see a piece of space up close, all you have to do is to look at the ring on your mom's finger - or the smartphone in your pocket.

1.What's the author's purpose of writing the first two paragraphs?

A. To emphasize the rareness of gold.

B. To list some uses of gold in daily life.

C. To explain the reasons for the popularity of gold.

D. To interest readers about the source of gold.

2.What would the collision of neutron stars lead to according to Xinhua?

A. The creation of black holes.

B. The death of the stars.

C. The disappearance of gravitational waves.

D. The creation of gold.

3.What’s the text mainly about?

A. China’s Kunlun Antarctic Station does research into gold.

B. Collisions between two neutron stars result in gold

C. Collisions contribute to the discovery.

D. Gold is considered a valuable and precious rescource.

4.What can we learn from the article?

A. The amount of gold produced by the collision was very small.

B. The collision was the largest reported in history.

C. China played a big role in the new discovery.

D. The collision took place 130 years ago.

高三英语阅读理解中等难度题查看答案及解析