C
SAN FRANCISCO--- As skies are filled with millions of migrating birds, Europeans scientists say the seasonal miracle appears to depend on a seeming contradiction: The fatter the bird, the more efficiently it flies.
The result of their study contradict a central theory of aerodynamics(空气动力学), which predicts that the power needed to fly increases with weight.
For birds, apparently, the cost of flying with heavy fuel loads is considerably smaller than previously thought.
Researchers found that red knot wading birds double their normal body weight of 100 grams before making their twice-a-year, non-stop commute(路程) between the British Isles and the Russian Arctic. Distance: 5,000 kilometers.
Another study in the journal Nature measured the benefits of flying in an aerodynamic V formation, which allows bird to save energy by gliding in the lead bird’s air stream.
Flying in formation, their heart rates were as much as 14.5 percent lower than flying solo, according to Henri Weimerskirch, a French scientist. The findings help explain how birds complete difficult migrations.
Researchers had assumed that thinner, more athletic birds would have the best chance of survival.
The first study suggests that building up fat deposits(存放) to be burned as fuel during the migrating is worth more than the energy it takes to carry the additional weight. In the study, researchers said their team studied the birds flown at different body masses during 28 simulated(模拟) flights. They were injected with a small amount of water containing a radioactive element that enabled the team to measure the amount of energy burned.
63. Researchers used to believe_______.
A. the thinner a bird is, the less energy it needs to fly
B. migratory birds make a journey from the British Isles to the Russian Arctic
C. aerodynamics makes no sense
D. birds eat more before they begin their migrations
64. According to the passage, birds prefer to fly in the V formation rather than fly solo because_____.
A. it is against aerodynamic to fly in the V formation
B. they can save energy while migrating
C. they won’t get lost with a bird leading the way
D. in this way their heart beat faster so that they can fly faster
65. The researchers didn’t ______ in the study.
A. inject the birds with water containing a radioactive element
B. watch birds of different body masses in simulated flights
C. take the birds’ heart rates
D. feed the birds to fatten them
66. The best title of the passage should be _______.
A. Birds Fatten up for Journey B. Migratory Birds in Europe
C. New Findings D. Migrating in V formation
一本好题口算题卡系列答案科目：高中英语 来源： 题型：阅读理解
Four people in England back in 1953, stared at Photo 51,It wasn’t much—a picture showing a black X. But three of these people won the Nobel Prize for figuring out what the photo really showed –the shape of DNA The discovery brought fame and fortune to scientists James Watson, Francis Crick, and Maurice Wilkins. The fourth, the one who actually made the picture, was left out.
Her name was Rosalind Franklin.”She should have been up there,” says historian Mary Bowden.” If her photos hadn’t been there, the others couldn’t have come up with the structure.” One reason Franklin was missing was that she had died of cancer four years before the Nobel decision. But now scholars doubt that Franklin was not only robbed of her life by disease but robbed of credit by her competitors
At Cambridge University in the 1950s, Watson and Click tried to make models by cutting up shapes of DNA’s parts and then putting them together. In the meantime, at King’s College in London, Franklin and Wilkins shone X-rays at the molecule(分子). The rays produced patterns reflection the shape.
But Wilkins and Franklin’s relationship was a lot rockier than the celebrated teamwork of Watson and Crick, Wilkins thought Franklin was hired to be his assistant .But the college actually employed her to take over the DNA project.
What she did was produce X-ray pictures that told Watson and Crick that one of their early models was inside out. And she was not shy about saying so. That angered Watson, who attacked her in return, “Mere inspection suggested that she would not easily bend. Clearly she had to to go or be put in her place.”
As Franklin’s competitors, Wilkins, Watson and Crick had much to gain by cutting her out of the little group of researchers, says historian Pnina Abir-Am. In 1962 at the Nobel Prize awarding ceremony, Wilkins thanked 13 colleagues by name before he mentioned Franklin, Watson wrote his book laughing at her. Crick wrote in 1974 that “Franklin was only two steps away from the solution.”
No, Franklin was the solution. “She contributed more than any other player to solving the structure of DNA . She must be considered a co-discoverer,” Abir-Am says. This was backed up by Aaron Klug, who worked with Franklin and later won a Nobel Prize himself. Once described as the “Dark Lady of DNA”, Franklin is finally coming into the light.
What is the text mainly about?
A. The disagreements among DNA researchers.
B. The unfair treatment of Franklin.
C. The process of discovering DNA.
D. The race between two teams of scientists.
Watson was angry with Franklin because she .
A. took the lead in the competition B. kept her results from him
C. proved some of his findings wrong D. shared her data with other scientists
Why is Franklin described as “Dark Lady of DNA”?
A. She developed pictures in dark labs.
B. She discovered the black X-the shape of DNA.
C. Her name was forgotten after her death.
D. Her contribution was unknown to the public.
What is the writer’s attitude toward Wilkins, Watson and Crick?
A. Disapproving. B. Respectful. C. Admiring. D. Doubtful.
查看答案和解析>>
科目：高中英语 来源： 题型：
It knowledge is power, ____Sir Francis Bacon wrote in 1579, ______ perhaps creativity ca be described as the ability to use that power.
A. what; and B. as; then C. which; and D. that; then
查看答案和解析>>
科目：高中英语 来源：2013届江西南昌10所省重点中学高三第二次模拟突破冲刺（二）英语试卷（带解析） 题型：阅读理解
There are many great movie directors of all time and the following are five of those who have largely impressed audience with their body of work.
As a member of the New Hollywood gang, Francis Coppola is best remembered for The God father series. His decision to cast Marlon Brando in the lead also met with fierce opposition from the studio bosses. Good sense became popular, and The God father went on to become one of the most memorable movies ever. Critics may point out that he has become less creative after his seventies, but try as one might, no one can possibly take the place of this great director’s work.
Stanley Kubrick’s movies focus on the themes like sci-fi, horror, dark humor and war. He used symbolism in most of his movies, giving us some wonderful screen visuals, as shown in 2001: A Space Odyssey. His actors in Hollywood complained about the endless number of retakes, but they appreciated the performance he milked out of them. People argue about films like Lolita, A Clockwork Orange and Paths of Glory, but these are now seen as classics.
Steven Spielberg is a great success at the box office, and he is one of the world’s most popular filmmakers today. As the creator of classics like Schindler’s List, Jurassic Park, ET, Indiana Jones series, Jaws, Saving Private Ryan, no one can win his hold over the audience. His critics accuse him of being emotional and over the top, but the fact remains that his movies attract the audience, and set the cash registers ringing.
Woody Allen is a director who directs movies full of crime and hate. This comic genius has given us Annie Hall, Hannah and Her Sisters and Midnight in Paris, which have also become classical. His movies constantly include characters who arouse the audience’s sympathy and laughter at the same time, as they set out on a journey of self-discovery. Hollywood star power has never fazed Allen. Thankfully, awards and honors do not interest him, which results in creativity that is original.
【小题1】What do the directors mentioned in the passage have in common?
| A．They are interested in awards for their works. |
| B．They are members of the New Hollywood gang. |
| C．They have created a lot of movies taken as classics. |
| D．They focus their themes on negative side of the society |
| A．Francis Coppola | B．Woody Allen |
| C．Stanley Kubrick | D．Steven Spielberg |
| A．Midnight in Paris | B．2001: A Space Odyssey |
| C．A Clockwork Orange | D．Paths of Glory |
| A．was successful in amusing the audience |
| B．succeeded in making a great box office |
| C．became much better at creating classics |
| D．had set a cash register working for himself |
| A．Their contribution to the society |
| B．The difference between the directors |
| C．Another famous movie directors |
| D．More great movies from the directors |
查看答案和解析>>
科目：高中英语 来源：山东莘县实验高中2009—2010学年度高二下学期阶段测试 题型：阅读理解
C
She is widely seen as proof that good looks can last forever. But, at nearly 500 years of age, time is catching up with the Mona Lisa.
The health of the famous picture, painted by Leonardo da Vinci in 1505, is getting worse by the year, according to the Louvre museum(卢浮宫博物馆)where it is housed.
“The thin, wooden panel on which the Mona Lisa is painted in oil has changed shape since experts checked it two years ago,” the museum said. Visitors have noticed the changes but repairing the world’s most famous painting is not easy. Experts are not sure about the materials the Italian artist used and their current chemical state.
Nearly 6 million people go to see the Mona Lisa every year, many attracted by the mystery of her smile. “It is very interesting that when you’re not looking at her, she seems to be
smiling, and then you look at her and she stops,” said Professor Margaret Livingstone of Harvard University. “It’s because direct vision(视觉)is excellent at picking up detail, but less suited to looking at shadows. Da Vinci painted the smile in shadows.”
However, the actual history of the Mona Lisa is just as mysterious as the smile. Da Vinci himself loved it so much that he always carried it with him, until it was eventually sold to France’s King Francis I in 1519.
In 1911, the painting was stolen from the Louvre by a former employee, who took it out of the museum hidden under his coat. He said he planned to return it to Italy. The painting was sent back to France two years later.
During World War II, French hid the painting in small towns to keep it out of the hands of German forces.
Like many old ladies, the Mona Lisa has some interesting stories to tell.
63. The underlined sentence in the first paragraph means the Mona Lisa ________.
A. is losing its value B. is being damaged after so many years
C. is getting more valuable with years passing D. will rot away
64. Experts haven’t any repairs on the Mona Lisa because______.
A.it is now in a poor chemical state
B. they don’t know how to replace the wooden panel
C .they don’t have the materials Da Vinci used
D. they are afraid it will be done further damage.
65. The smile of the Mona Lisa can only be seen_______.
A. by indirect vision B. at a distance C. by direct vision D. in shadows
66. From the last paragraph, we can infer that______.
A. many interesting stories have been written about the Mona Lisa
B. people are interested in the stories about the Mona Lisa.
C. some mysteries still remain to be solved about the Mona Lisa.
D. Many more stories will be told about the Mona Lisa.
查看答案和解析>>
科目：高中英语 来源：2012-2013学年广西柳铁一中高二下学期第一次月考英语试卷（带解析） 题型：阅读理解
Throughout his early years, Obama was known at home and at school as “Barry”. Obama’s parents met while both were attending the University of Hawaii at Manoa, where his father was enrolled(登记入读) as a foreign student. They separated when he was two years old and later divorced(离婚). His father received Master’s degree in Economics from Harvard University, then returned to Kenya, where he became a finance minister before dying in an automobile accident in 1982. His mother married another foreign student, Lolo Soetoro, and the family moved to Soetoro’s home country of Indonesia in 1967. Obama attended local schools in Jakarta, from age 6 to 10, where classes were taught in the Indonesian language.
During his time in Indonesia, he first attended St. Francis Assist Catholic school for almost three years. When Obama was in third grade he wrote an essay saying that he wanted to be president. His teacher later said that his reason for becoming president was that he wanted to make everybody happy.
Obama returned to Honolulu to live with his materal(母亲一方的) grandparents while attending Punahou School, a private college elementary school, from the fifth grade until his graduation in 1979. Obama’s mother, Ann, died of cancer a few months after the publication of his 1995 memoir(传记), Dreams from My Father.
In the memoir, Obama describes his experiences growing up in his mother’s middle class family. Of his early childhood, Obama writes, “That my father looked nothing like the people around me---that he was black as pitch(沥青), my mother white as milk .”
Some of his fellow students at Punahou School later told the Honolulu Star—Bulletin that Obama was mature(成熟的) for his age as a high school student and that he sometimes attended parties and other events in order to connect with African American college students and military service people.
【小题1】When Obama was a child, _________.
| A．people used to call him Berry |
| B．his father died of serious illness |
| C．his father became a finance minister of America |
| D．his parents attended Harvard University |
| A．He got college education in Indonesia |
| B．He is a person from Kenya in Africa |
| C．He is Obama’s stepfather and is a black |
| D．He is a foreign student in America |
| A．1982; 1967 | B．1967; 1982 | C．1979; 1967 | D．1995; 1982 |
| A．Obama’s father was very black while his mother very white |
| B．Obama’s materal grandparents lived in Honolulu of Indonesia |
| C．Obama wanted to be president because he liked making people happy |
| D．Obama’s classmates thought he was mature for his age as a high school student |
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com
