The Golden Gate Bridge, _______ several hundr...

The Golden Gate Bridge, _______ several hundred years ago, is worldwide famous.

A. which is built　　　　　　　　　　 B. built

C. having built　　　　　　　　　　　　 D. which built

高一英语单项填空中等难度题查看答案及解析

听下面一段独白，回答以下小题。

1.How long did it take to build the Golden Gate Bridge?

A. Three years.　　 B. Four years.　　 C. Seven years.

2.What must you bring with you if you decide to visit the Bridge?

A. A camera.　　 B. A bike.　　 C. A jacket.

3.How many bridges are longer than the Bridge?

A. Four.　　 B. Eight.　　 C. Twelve.

4.What is true about the Bridge according to the speaker?

A. It's not worth visiting now.

B. It's still a famous attraction in the world.

C. It's the oldest bridge of its kind in the world.

高一英语长对话或独白困难题查看答案及解析

听下面一段对话，回答以下小题。

1.How long did it take to build the Golden Gate Bridge?

A. Three years.　　 B. Four years.　　 C. Seven years.

2.What must you bring with you if you decide to visit the Bridge?

A. A camera.　　 B. A bike.　　 C. A jacket.

3.How many bridges are longer than the Bridge?

A. Four.　　 B. Eight.　　 C. Twelve.

4.What is true about the Bridge according to the speaker?

A. It's not worth visiting now.

B. It's still a famous attraction in the world.

C. It's the oldest bridge of its kind in the world.

高一英语短文中等难度题查看答案及解析

Can you imagine that several hundred years ago, tomatoes were seen as toxic food in Europe?

What made Europeans believe this was John Gerard’s publication of Herbal in 1597. Gerard wrote: “The leaves and stalks of the tomato plant are toxic.” Undoubtedly, Gerard’s opinion was based on a misunderstanding of tomatoes. But his opinion was widely spread in Britain and North America for over two hundred years.

In the late 1700s, a lot of Europeans held more fears for tomatoes. A nick name for the fruit was “poison apple” because it was believed that aristocrats(贵族) got sick and died after eating them. But the actual reason was the pewter plates they used. Since tomatoes are high in acidity, when placed on the plates, the lead(铅) in the plates would dissolve(溶解). This caused many deaths. Unluckily, no one knew this at that time. So the innocent tomatoes were picked as the killer.

Today, more than one and a half billion tons of tomatoes are produced every year around the world. Tomatoes are cooked in various ways. This healthy and tasty food finally wins its innocence(清白) back.

1.Which of the following can be the best title for this passage?

A. Europeans’ fears for tomatoes

B. History of tomato planting

C. Why do people eat so many tomatoes

D. How did the tomato prove its value

2.What does the underlined word “toxic” in paragraph 1 mean?

A. delicious　　　　 B. nutritious(有营养的)

C. poisonous　　　　 D. safe

3.When did people begin to eat tomatoes according to the text?

A. About 100 years ago.　　　 B. About 200 years ago.

C. About 300 years ago.　　　 D. About 400 years ago.

4.What’s the key point for the death of the aristocrats mentioned in the passage?

A. Tomatoes.　　　　 B. The pewter plate.

C. Serious illness. D. Chemical reaction.

高一英语阅读理解中等难度题查看答案及解析

The island is ______ the mainland by the bridge built ten years ago.

高一英语单项填空简单题查看答案及解析

When people first walked across the Bering Land Bridge thousands of years ago, dogs were by their sides, according to a study published in the journal Science.

Robert Wayne of the University of California, Los Angeles, and Jennifer Leonard of the Smithsonian Institute, used DNA material—some of it unearthed by miners in Alaska—to conclude that today’s domestic dog originated in Asia and accompanied the first humans to the New World about 10,000 to 15,000 years ago. Wayne suggests that man’s best friend may have enabled the tough journey from Asia into North America. “Dogs may have been the reason people made it across the land bridge,” said Wayne. “They can pull things, carry things, defend you from fierce animals, and they’re useful to eat.”

Researchers have agreed that today’s dog is the result of the domestication(驯化) of wolves thousands of years ago. Before this recent study, a common thought about the precise origin of North America’s domestic dog was that Natives domesticated local wolves, the descendents(后代) of which now live with people in Alaska, Canada, and the Lower 48.

Dog remains from a Fairbanks-area gold mine helped the scientists reach their conclusion. Leonard, an evolutionary biologist, collected DNA from 11 bones of ancient dogs that were locked in permafrost(永冻层) until Fairbanks miners uncovered them in the 1920s. The miners donated the preserved bones to the American Museum of Natural History in New York City, where they remained untouched for more than 70 years. After borrowing the bones from the museum, Leonard and her colleagues used radiocarbon techniques to find the age of the Alaska dogs. They found the dogs all lived between the years of 1450 and 1675 A.D., before Vitus Bering and Aleksey Chirikov who were the first known Europeans to view Alaska in 1741. The bones of dogs that wandered the Fairbanks area centuries ago should therefore be the remains of “pure native American dogs,” Leonard said. The DNA of the Fairbanks dogs would also expose whether they were the descendents of wolves from North America.

Along with the Fairbanks samples, the researchers collected DNA from bones of 37 dog specimens(标本) from Mexico, Peru, and Bolivia that existed before the arrival of Columbus. In the case of both the Alaska dogs and the dogs from Latin America, the researchers found that they shared the most genetic material with gray wolves of Europe and Asia. This supports the idea of domestic dogs entering the New World with the first human explorers who wandered east over the land bridge.

Leonard and Wayne’s study suggests that dogs joined the first humans that made the adventure across the Bering Land Bridge to slowly populate the Americas. Wayne thinks the dogs that made the trip must have provided some excellent service to their human companions or they would not have been brought along. “Dogs must have been useful because they were expensive to keep,” Wayne said. “They didn’t feed on mice; they fed on meat, which was a very guarded resource.”

1. The underlined word “remains” is closed in meaning to ______.

A. leftover food　　　 B. dead bodies

C. animal waste.　 　 D. living environmet

2.According to the study described in Paragraph 4, we can learn that ______.

A. the bones studied were not from dogs brought into North America by Europeans

B. the 11 bones of ancient dogs are not from native American dogs

C. the bones discovered by the gold miners were from North American wolves

D. ancient dogs entered North America between 1450 and 1675 AD

3.What can we know from the passage?

A. Native Americans domesticated local wolves into dogs.

B. Ancient dogs entered North America across the Bering Land Bridge.

C. Latin America’s dogs are different from North America’s in genes.

D. Scientists discovered some ancient dog remains in 1920s.

4.The first humans into the New World brought dogs along with them because ______.

A. dogs fed on mice

B. dogs were easy to keep

C. dogs helped protect their resources

D. dogs could provide excellent service

5.The passage mainly talks about ______.

A. the origin of the North American dogs

B. the DNA study of ancient dogs in America

C. the reasons why early people entered America

D. the difference between Asian and American dogs

高一英语听力第三部分中等难度题查看答案及解析

Over a hundred years ago in 1911, something strange was found in the glaciers of Antarctica. Grilffith Taylor—an Australian geologist, had discovered a blood red steam pouring out of the ice cascades（瀑布）of Talor Glacier! Popularly known as the Blood Falls, scientists had not been able to find the reason behind the blood red liquid flowing through the ice---until recently. The mystery of the Blood Falls had finally been solved.

When these falls were first discovered, scientists had believed that the red colour came from a large amount of red algae（海藻）concentrated in the water. Red algae contain a pigment（色素）which reflects red light, making the algae appear red.

This theory made sense, until it was later found that algae do not play a part in the red color of the flowing liquid at all. What really causes Talor Glacier’s waters appear blood red, is the presence of iron oxide in the liquid. The waters of the blood falls are rich in salt and iron content, and when this water comes in contact with the air, it turns red—just like rust! The water in these falls is often referred to as “brine” by scientists because of the high salt content in the water.

This reasoning behind the red colors of the falls was found back in 2003. However, the entire mystery had not yet been solved. How is it then, that the Blood Falls are not frozen?

Researchers at the University of Colorado and University of Alaska found that inside the glacier, there was a network of channels and reservoirs that move the water around. Salt water has a lower freezing temperature. In addition, when any substance undergoes a change in state, it gives off heat. Therefore, the brine actually warm itself up while it’s freezing! How this works, is that when the brine is flowing through the Talor Glacier, some of it does freeze. As a result of changing state from liquid to ice, the brine gives off heat. This heat is enough to keep the rest of the rest of the brine in liquid form, which is why it flows out of the glacier.

Incredible new chemistry facts found, any mystery solved!

1.According to the text, the red algae theory was once considered ________.

A.ridiculous B.reasonable

C.impractical D.complex

2.Why does the Blood Falls look red in colour?

A.Because there is too much salt and iron in its water.

B.Because its liquid is rich in red algae.

C.Because the following liquid reflects and sunlight

D.Because the air is thin and rare in Antarctica.

3.What is the main reason for the Blood Fall’s not freezing?

A.The water continued flowing constantly.

B.There is too much salt in the water.

C.The brine gives off heat while freezing

D.Temperatures aren’t high enough for flowing water.

4.What is the passage mainly about?

A.The discovery of the blood glacier.

B.The birth of the Talor Glacier.

C.The flowing red water in Antarctica.

D.The mystery of the Blood Falls.

高一英语阅读理解中等难度题查看答案及解析

Several years ago, I decided to change my job and attended an interview. During the interview, the interviewer covered the ______ questions about my work history, education and goals, Then, he asked, "What event or accomplishment in your life has made you the_______ ?"

I paused for a moment, and told him my proudest moment wasn’t anything I did,______ something my daughter did ten years before. Then I told him the story of Julie’ s____.

Many years earlier, my brother ______from St. Louis, telling me .that my mom wouldn’t receive her benefits several months.______ she would have to　 live off her small savings.

At the supper table that evening; I told my husband I was going to send Mom some______. Our conversation was cut short by a phone call. A neighbor_______ Julie to babysit.

At fourteen, Julie was always looking for ways to _____ spending money. The following morning, she______ me an envelope.

When I looked at the_______and saw it was for my mom, I gave her a big hug. I told her how proud I was of her for taking the time to______her grandma. She smiled.

A week later, my brother called again, thanking for the check and telling me how Mom cried when me she got Julie’s _______He told me Julie had ______ her grandma the five dollars she had earned babysitting .In her letter, she told Grandma to_______ it on whatever she needed

I continued. "I know that isn’t really a job_______, but that’ s what made me the proudest in my life."

A week later, I was given the job. My boss told me after hearing about my story, he ______ I was the type of employee he wanted to_______ in his organization.

This time’ I was the recipient (接受者) of Julie’ s gift. Once again, her simple act of ______ given from the heart so many years before had________

1.A. challenging　　 B. awkward　　 C. difficult　　 D. expected

2.A. proudest　　 B. strongest　　 C. happiest　　 D. luckiest

3.A. and　　 B. nor　　 C. but　　 D. even

4.A. wish　　 B. gift　　 C. bravery　　 D. secret

5.A. called　　 B. traveled　　 C. drove　　 D. shouted

6.A. However　　 B. Otherwise　　 C. Still　　 D. Therefore

7.A. necessities　　 B. food　　 C. money　　 D. presents

8.A. wanted　　 B. allowed　　 C. advised　　 D. encouraged

9.A. borrow　　 B. save　　 C. invest　　 D. earn

10.A. bought　　 B. handed　　 C. spared　　 D. returned

11.A. address　　 B. stamp　　 C. title　　 D. message

12.A. visit　　 B. write　　 C. thank　　 D. miss

13.A. picture　　 B. story　　 C. letter　　 D. card

14.A. awarded　　 B. brought　　 C. lent　　 D. sent

15.A. change　　 B. put　　 C. spend　　 D. waste

16.A. opportunity　　 B. accomplishment　　 C. application　　 D. interview

17.A. decided　　 B. promised　　 C. admitted　　 D. agreed

18.A. play　　 B. follow　　 C. compete　　 D. work

19.A. patience　　 B. obedience　　 C. love　　 D. gratitude

20.A. come out　　 B. paid off　　 C. made sense　　 D. worked out

高一英语完形填空困难题查看答案及解析

Here in Alaska, the wolf almost disappeared a few years ago, because hunters were killing hundreds of them for sport. However, laws were passed to protect the wolves from sportsmen and people who catch the animals for their fur. So the wolf population has greatly increased. Now there are so many wolves that they are destroying their own food supply.

A wolf naturally lives on animals in the deer family. People there also hunt deer for food. Many of the animals have been destroyed by the very cold winters recently and by changes in the plant life there. When the deer can’t find enough food, they die.

If the wolves continue to kill large numbers of deer, the deer will disappear some day. And the wolves will, too. So we must change the life cycles there. If we killed more wolves, we would save them from starving. We also save deer and some farm animals.

In another northern state, wolves attack cows and chickens for food. Farmers want the United States government to send a team of scientists to study the problem. They believe it is necessary to kill wolves in some areas and to protect them in places where there is a small population.

1.In Alaska, laws have been passed to ____.

A．protect people from wolves and deer

B．protect wolves from becoming dangerous

C．protect wolves from dying out

D．keep wolves from killing large numbers of deer

2.Why is it that if wolves go on killing a good many deer the wolves will die out?

A．Because wolves will have no deer to kill.

B．Because people will kill them for punishment.

C．Because killing deer is dangerous.

D．Because wolves mainly live on deer.

3.In order to protect more deer from being killed, one way is to ____.

A．pass a law                             B．keep deer away from wolves

C．kill more wolves                        D．serve wolves more food

4.Which of the following statements is true according to the passage?

A．Some wolves in some areas must be killed, which others should be protected.

B．Wolves should be protected, for there’s a small population of it on earth.

C．All wolves should be protected, for they eat deer, cows and chicken.

D．It is necessary for scientists to protect wolves, or the cycle of life will be changed

高一英语阅读理解中等难度题查看答案及解析

Hundreds of years ago, Native-American tribes lived in Mexico. The Aztecs built beautiful cities. They had a calendar (历法) and a written language. However, the Spanish destroyed the Aztecs in l521. For the next 300 years, Spain ruled over Mexico. That’s why Mexicans speak Spanish.

Every September l6 the Mexican people hold a celebration in Mexico City, their country’s capital. It is their Independence Day. On that date in 1821 they told Spain they would no longer be ruled. Breaking free from Spain caused a war. When it was over, the Mexicans had their own government. They made their own laws.

Today America and Mexico are friends, but it wasn’t always that way. President James Polk wanted America to reach from the Atlantic Ocean to the Pacific Ocean. He tried to buy what is now the American southwest from Mexico. Mexico would not sell. So from l846 to 1848 Mexico and America fought a war to ascertain where their borders would be. When the war ended, Mexico had lost a lot of land. Now the Rio Grande River forms the border between the two nations. America is on the north side of the river. Mexico is on the south side.

Mexico has mountains and a hot, dry climate. Crops can grow on only a small part of the land. Still, Mexicans grow much of the coffee, oranges, and sugar used in the US. Mexicans have influenced building styles in southwestern US and added words such as patio and canton to American English. Americans also enjoy eating many Mexican foods like burritos, tacos, tortillas, and tamales.

1.According to the passage, what happened second on historical timeline?

A. Mexicans declared their independence from Spain.

B. The Spanish ruled Mexico.

C. The Aztecs lived in Mexico.

D. Americans fought a war with Mexico.

2.The passage says that President Polk wanted ______.

A. the US to expand its borders to the Pacific Ocean

B. Mexico to change its Independence Day to July 4th

C. Mexico to become one of the states of the Union

D. Americans to adopt the Mexican language

3. Another word for the underlined word “ascertain” is ______.

A. inspect　　　 B. cover

C. change　　　　 D. determine

4.Mexicans have the following influences on America EXCEPT ______.

A. building styles　 B. vocabulary

C. clothes　 　　　　 D. food

5.Before the Aztecs were conquered(征服), these Native Americans probably ______.

A. didn’t speak Spanish

B. couldn’t read or write any language

C. didn’t have tools

D. didn’t understand the concept of time

高一英语阅读理解中等难度题查看答案及解析