Plastic waste has polluted the Arctic. Two ne...

Plastic waste has polluted the Arctic. Two new studies have spied bags, fishing rope and tinier bits of rubbish in the Barents Sea. This sea sits north of Norway, Sweden, Finland and Russia. It mixes with the Arctic Ocean, which is even farther north.

Plastic waste in the Arctic could harm wildlife and may hint that large volumes of human rubbish are collecting there, says Melanie Bergmann. She is one of the scientists who spotted the waste. She studies Earth’s oceans at the Alfred Wegener Institute in Bremerhaven, Germany. She first started counting bits of plastics in the Barents Sea because she kept spotting signs of the stuff there in images taken with deep-sea cameras.

Bergmann and her colleagues counted pieces of plastic from an icebreaker, a boat designed to break through large blocks of ice in very cold waters. They also tracked plastic pieces they saw during helicopter rides over Arctic waters. The team found 31 pieces of plastic. “That doesn’t seem like much, but it shows us that we’ve really got a problem, one that extends even to this remote area, far from civilization,” Bergmann says. She and her colleagues described their findings October 21 in Polar Biology.

Another team has also been counting plastics in the area. Those scientists took water from the Barents Sea and counted the number of smaller bits of plastics, called microplastics.

Plastic in the ocean is dangerous to animals. Some may get caught in rope or bags. And wildlife may swallow bags and other plastic bits. That makes them feel full. But some may eventually starve because they are not getting the nutrients they need to live. Sometimes plastics also may break down in an animal’s body and release poisonous chemicals. If another animal later eats the one that swallowed plastic, it too can end up with poisonous chemicals in its body. This, in turn, can travel up the food web, endangering predators (肉食动物) — even people.

1.What can be learned from Para 1?

A. Europe is surrounded by the Arctic Ocean.

B. The Barents Sea is to the north of the Arctic.

C. The Arctic Ocean is polluted by plastic rubbish.

D. European countries are to blame for the pollution.

2.What has brought Bergmann’s attention to plastic waste in Barents Sea?

A. Human rubbish dumped in the sea.

B. Pictures taken by deep-sea cameras.

C. Sea water taken to the laboratory.

D. Wildlife spotted by helicopter.

3.What concerned Bergmann according to Para 3?

A. Plastic is found in the remote sea.

B. The sea is covered with plastic.

C. Advanced tools are in great need.

D. People suffered from bad weather.

4.Why is plastic dangerous to animals?

A. Animals may get choked by bags or plastic bits.

B. Animals may die of hunger if they swallow bags.

C. Plastic can release harmful gases to kill animals.

D. It is hard for plastic bags and bits to break down.

高三英语阅读理解中等难度题查看答案及解析

As we all know, he has regretted wasting the precious time______ he should have studied hard

playing computer games at school.

高三英语单项填空简单题查看答案及解析

Speaking two languages can actually help reduce some effects of aging on the brain, a new study has found.

Researchers tested how long participants needed to _______ from one cognitive (认知) task to another, something that’s known to _______ longer for older adults, said lead researcher, Brain Gold, an expert at the University of Kentucky, “It has great effects these days because our population is _______ gradually,” Gold said. “Seniors are _______ longer, and that’s a good thing, but it’s only a good thing _______ a certain degree that their brains are _______.”

Gold’s team compared task-switching of younger and older _______, knowing they would find slower speeds in the _______ population because of previous studies. _______, they found that older adults who spoke two languages were able to switch mental gear (齿轮) ________ than those who didn’t.

First, Gold and his team ________ 30 people, who were either bilingual (双语的) ________ monolingual (单语的), to look at a series of colored shapes and ________ with the name of each shape by pushing a button. Then, they ________ the participants with a similar series of colored shapes and asked them to respond with what ________ the shapes were by pushing a button. The bilingual people had the ________ to respond faster to the shifting prompts (提示).

Researchers then gathered 80 more people for a second ________; 40 bilinguals and 40 monolinguals. This time, researchers used FMRI machines to ________ brain activity during the same shape-and color-identifying ________. Gold and his team found that bilingual people had different brain activity than their monolingual peers.

“Learning a second language in childhood was thought of as ________,” Gold said. “Actually, it’s beneficial.”

1.A. switch　　 B. perform　　 C. jump　　 D. transport

2.A. hold　　 B. spend　　 C. last　　 D. take

3.A. increasing　　 B. aging　　 C. growing　　 D. exploding

4.A. surviving　　 B. staying　　 C. living　　 D. expecting

5.A. with　　 B. in　　 C. at　　 D. to

6.A. powerful　　 B. healthy　　 C. sensitive　　 D. special

7.A. adults　　 B. researchers　　 C. leaders　　 D. seniors

8.A. random　　 B. ordinary　　 C. older　　 D. younger

9.A. Thus　　 B. Otherwise　　 C. Besides　　 D. However

10.A. faster　　 B. slower　　 C. longer　　 D. better

11.A. paid　　 B. asked　　 C. promised　　 D. forced

12.A. yet　　 B. nor　　 C. or　　 D. and

13.A. remember　　 B. realize　　 C. recall　　 D. reply

14.A. presented　　 B. rewarded　　 C. assisted　　 D. treated

15.A. forms　　 B. types　　 C. colors　　 D. sizes

16.A. right　　 B. ability　　 C. opportunity　　 D. determination

17.A. experiment　　 B. conclusion　　 C. lesson　　 D. task

18.A. recognize　　 B. improve　　 C. make　　 D. record

19.A. tools　　 B. scores　　 C. tasks　　 D. games

20.A. useless　　 B. reasonable　　 C. simple　　 D. interesting

高三英语完形填空困难题查看答案及解析

Two hundred years after Charles Darwin’s birth, studies have found new details of his life at the University of Cambridge. Six leather-bound ledgers(皮革账本) discovered in the university show this. 1.

He lived in the most expensive rooms provided for a rich student at his time. 2. He had someone to clean his room, make his bed and take care of the fire in his bright rooms. He hired a dishwasher, a clothes washer and a man who cleaned his shoes. A tailor(裁缝), hatter and barber made sure he was well presented. A chimney cleaner and a coalman kept his fire going. Christ’s College’s basic food was meat and beer. 3.

4. Later he described this time as the most joyful of his happy life. That large sum(金额) would have been fairly common for a student at Cambridge in the 19th century. The bills were paid by his wealthy father, Robert Darwin, a doctor.

In those days Cambridge was full of rich students living a pretty good life and Darwin was just one of them. Thanks to the richness, he was able to hire servants to help with the daily life. 5. He would be out shooting, collecting beetles, doing his scientific hobbies or visiting friends. He played cards and drank wine at night, just like students always have.

A. And thus he had plenty of time for socializing or private study.

B. The findings were published on the Internet.

C. So he paid five and a half pence extra each day to have vegetables.

D. He had several people to help him to deal with the daily housework.

E. He enjoyed the kind of comfortable university life that most of today’s students can only dream about.

F. When you look at the ledgers, you can find there were many rich students in Cambridge.

G. Darwin’s bill topped 636 pounds during his three years of study at Cambridge.

高三英语七选五简单题查看答案及解析

One of the biggest new bands in the UK is Arctic Monkeys.Their first two singles(单曲唱片)went straight to Number One in the charts(排行榜)and their first album “Whatever People Say I Am，That's what I'm No” has become a recordbreaking album.It's the fastest selling debut album(首张专辑)in UK chart history.

Arctic Monkeys are famous because of their great success.They achieved their success thanks to the Internet.Usually a new band signs to a record company and then it is through marketing that people buy their singles.The single sales then get the band into the charts and they become popular that way.

However，Arctic Monkeys became wellknown in a slightly different way.Back in 2003 when the band first started，they handed out CDs at their performing concert.Certain fans liked the music so much that they put the music up on the Web.The general public had access to this music because it was on the Internet and，because people liked the music，the band's popularity increased.The band's popularity was starting to get noticed by major radio stations in the UK.

Arctic Monkeys released(发行)their first single in October 2005.Before that，their music had only been available to download on the Internet.When they did finally release a single and an album，they both rose to the top of the charts.

Music fans welcome the use of the Internet this way—Arctic Monkeys became popular simply because people liked their music when they heard it.There were no ads.As music downloads continue to increase in popularity，we can expect to see more and more bands make it big in this way.

1.Arctic Monkeys gained popularity through __________.

A．giving away their CDs

B．the Internet

C．singing to a record company

D．marketing and advertisement

2.．Before 2005，how can you get Arctic Monkeys' music?

A．Going to their live music party.

B．Download their music from the Internet.

C．Buying their singles and albums in a shop.

D．Listen to it on the radio in the UK.

3.Why did Arctic Monkeys become popular?

A．People could hear their music often.

B．They didn't advertise their music.

C．People liked their music.

D．The marketing company did well.

高三英语阅读理解中等难度题查看答案及解析

_______ has been known that ______ other waste found in the ocean, the plastic  does not break down.

A. As; dislike     B. It, unlike

C. What, unlike D. That, dislike

高三英语单项填空中等难度题查看答案及解析

A new study has found that North American migratory birds (候鸟)have been getting smaller over the past 40 years. Researchers say the finding suggests a warming climate could be affecting bird growth in North America - and across the world.

The study involved data on nearly 80,000 birds killed from 1978 to 2016 in the city of Chicago, Illinois. Researchers measured the size of the birds. The birds included in the study had died after crashing into buildings during the spring and fall migrations.

Fifty-two species of birds were studied. Most were different kinds of songbirds. These birds reproduce in cold areas of North America and spend their winters in areas south of Chicago. Over the 40-year period, body size decreased in all 52 species. The average body mass fell by 2. 6 percent. Leg bone length dropped by 2. 4 percent. The one area of growth was the wingspan, which increased by 1.3 percent. The researchers said the wing growth likely happened to permit the birds to continue making long migrations with smaller bodies.

Brian Weeks, a biologist at the University of Michigan's School for Environment and Sustainability, helped lead the research. He told the Reuters news agency that he believes the results show a clear link between a warming climate and the growth of the birds.

The study found a direct link between the average summer temperature and the body size of the birds. Dave Willard works with Chicago's Field Museum, which was in charge of measuring all the birds. He said nearly “ everyone agrees that the climate is warming, but examples of just how that is affecting the natural world are only now coming to light.” The study provides new evidence of worrisome developments for North American birds.

A study published in September documented a 29-percent drop in the bird population in the United States and Canada since 1970. The study said this represented a net loss (净亏损)of about 2. 9 billion birds. Weeks said the new study is the largest examination yet to measure body size reactions to warming temperatures involving a large, diverse group of species. “We had good reason to expect that increasing temperatures would lead to reductions in body size, based on previous studies,” Weeks added. “The thing that was shocking was how consistent it was. I was incredibly surprised that all of these species are responding in such similar ways.”

The researchers plan to continue studying the Field Museum data in an effort to find additional evidence to support their findings. They will also further examine the idea that an individual's physical development can change to fit changing environmental conditions.

1.In the study, the size and mass of birds fell but the wingspan increased, which　　 .

A.permitted birds to fly higher and stronger

B.made birds' long migration with smaller bodies possible

C.could protect birds from being extinct in the world

D.made North American migratory birds more beautiful and charming

2.Which of the following statements about Dave Willard is CORRECT?

A.He conducted a research which proved the climate is warming.

B.He provided new evidence of worrisome developments for North American birds.

C.He works with Chicago's Field Museum and is in charge of measuring all the birds.

D.He agrees that evidence proving a link between global warming and nature is just revealed.

3.According to the text, what made Brian Weeks astonished?

A.All species are responding to global warming similarly.

B.His study was surprisingly consistent with other scientists' research.

C.Birds got smaller in all parts of their body with the temperature increasing.

D.All species surveyed became smaller in response to increasing temperatures.

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

A.Birds Are Going to Die Out

B.Migratory Birds Are Getting Smaller

C.Climate Change May Be Causing Smaller North American Birds

D.Brian Week, A Great Biologist, Published A Study about Birds

高三英语阅读理解简单题查看答案及解析

Plastic bags are provided for our convenience but they have also_______ the pollution of the environment．

A．adapted to           B．turned to             C．contributed to      D．looked forwarded to

高三英语单项填空简单题查看答案及解析

The construction of the two new railway lines　　 by now.

A.have been completed　 B.has been completed　 C.has coompleted　　　　 D.have completed

高三英语单项填空中等难度题查看答案及解析

25．The construction of the two new railway lines____by now.

高三英语单项填空简单题查看答案及解析