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.
【小題1】B
【小題 2】C
【小題3】D
【小題4】A
【小題1】主旨大意題。本文講述了主人公Franklin的一系列事情,第一自然段作者提到"The fourth——was left out ",最后一段也提到"She contributed more than any other player to solving the structure of DNA. She must be considered a co-discoverer,"由此看出命運(yùn)對她的不公,選A。
【小題2】細(xì)節(jié)理解題。由"What she did was ------- And she was not shy about saying so",可知選C。
【小題3】細(xì)節(jié)理解題。從文中看出作者多次提及Franklin對發(fā)現(xiàn)DNA的貢獻(xiàn),但卻始終不為人所知,由此理解dark,所以稱為"Dark Lady of DNA",選D。
【小題4】觀點(diǎn)、態(tài)度題。由倒數(shù)第二段"As Franklin's competitors, Wilkins, -----from the solution." 可推出作者是不贊成,選A。
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1.If Jim is free this Sunday, he can choose to visit the following parks EXCEPT________.
A.Islands of Adventure B.PI-O
C.Legoland Windsor D.Wonder La
2.How is PI-O Indoor Theme Park mainly different from other parks?
A.It is much safer. B.It features more rides.
C.It is much cheaper. D.It offers more activities.
3.If a couple want to visit Legoland Windsor Theme Park with their 5-year-old son, how much do they need to pay when booking online?
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Also on Thursday, the commission reported the city's third death from the H7N9 bird flu. The case involved a 48-year-old man surnamed Chu, a poultry (家禽) transporter from Rugao in neighboring Jiangsu Province. He developed symptoms(癥狀) of cough on March 28. After having a fever on Monday, he went to a private clinic for treatment. The man then sought help in the Tongji Hospital in Shanghai in the early hours of Wednesday after his condition worsened. Chu died three hours after being admitted to the hospital. He was confirmed infected with the H7N9 virus on Thursday. Eight people who had close contact with him have shown no abnormal symptoms.
So far, China has confirmed 14 H7N9 cases -- six in Shanghai, four in Jiangsu, three in Zhejiang and one in Anhui, in the first known human infections of the lesser-known type of bird flu. Of all, four died in Shanghai and one died in Zhejiang. China's Ministry of Agriculture said Thursday the H7N9 avian flu virus has been detected from pigeon (鴿子) samples collected at a marketplace in Songjiang District of Shanghai.
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1.What does the underlined word “confirmed” probably mean?
A.said
B.doubted
C.proved
D.made
2.What does the news report mainly about?
A.How many people died of H7N9 bird flu
B.How the development of the H7N9 bird flu vaccine (疫苗) is going on
C.What measures the government has taken to stop the spreading of H7N9
D.The new outbreak of the H7N9 bird flu
3.Which of the following statements is NOT true according to the news report?
A.H7N9 bird flu has killed four people in Shanghai and one in Zhejiang.
B.H7N9 virus is not one that spreads from human to human
C.So far, China has confirmed 14 deaths from the H7N9 bird flu
D.The government agreed to cooperate with WHO in regards to the H7N9
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A.Chu, a poultry transporter is the city’s third death from the H7N9 bird flu
B.Chu developed symptoms of cough and a fever
C.Chu died three hours after being admitted to a private clinic
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After gene sequence analysis, the national avian flu reference laboratory concluded that the H7N9 virus found on pigeons was highly congenetic with those found on persons infected with H7N9 virus. China's health authorities have promised transparency(透明) and cooperation (合作) to the World Health Organization in regards to human infections of the new type of bird flu. The Chinese Center for Disease Control and Prevention said Wednesday that no human-to-human transmission of H7N9 has been discovered.
1.What does the underlined word “confirmed” probably mean?
A.said B.doubted C.proved D.made
2.What does the news report mainly about?
A.How many people died of H7N9 bird flu
B.How the development of the H7N9 bird flu vaccine (疫苗) is going on
C.What measures the government has taken to stop the spreading of H7N9
D.The new outbreak of the H7N9 bird flu
3.Which of the following statements is NOT true according to the news report?
A.H7N9 bird flu has killed four people in Shanghai and one in Zhejiang.
B.H7N9 virus is not one that spreads from human to human
C.So far, China has confirmed 14 deaths from the H7N9 bird flu
D.The government agreed to cooperate with WHO in regards to the H7N9
4.What can we infer from the second paragraph?
A.Chu, a poultry transporter is the city’s third death from the H7N9 bird flu
B.Chu developed symptoms of cough and a fever
C.Chu died three hours after being admitted to a private clinic
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Washington, April 4----- The United States has more than 90 million families for the first time, but each contains fewer people on average than ever, the Census Bureau(統(tǒng)計(jì)局) reported today.
The 90,031,000 families in the United States averaged 2.64 members each as of last July 1.“The reason is, in effect, changes in the age structure,” explained Campbell Gibson, a population researcher for the bureau. Most Americans born in the great explosion of births are now in their 20’s and 30’s when they most likely to set up families, he said.
The fact that many are doing so increased the number of families from 80.4 million in 1980 t0 88.8 million in 1986 and past the 90 million mark last summer.
At the same time, the average number of people per family dropped from 2.75 in 1985 to 2.65 in 1986 and then to 2.64, Mr Gibson said.
By comparison, the 1970 Census found the average family contained 3.14 people. Families averaged more than four people in 1939 and more than five in 1880.
The growing number of ever---- smaller families is still going on, but Mr Gibson pointed out that family growth was not the same as population increase in the 1970’s.
The same age factors that are increasing the number of families also happened then, but in the 1970’s the proportion(比例) of families in each age group was also growing.
That hasn’t continued in the 1980’s for a number of possible reasons, Mr Gibson said. For example, in the 1980’s more young people have chosen to remain home with their parents instead of setting up housekeeping on their own, as many did in the 1970’s.
This could be caused by the increasing cost of housing, he said. Delays in marriage while young people go to work and school, have also been widely reported as a factor, but it was not the only factor for the family changes.
1.The smaller figure of families reported here is _________.
A.1980 |
B.80,400,000 |
C.2.64 |
D.90 million |
2.What’s the reporter’s attitude towards the present situation?
A. People should get married at later age.
3.From the last paragraph we may infer that________.
A. delay in marriage will not help the number of the families
4. The underlined word “factor” in the passage means_________.
A.reason |
B.something that proves be true |
C.a(chǎn)dvantage |
D.something that helps to bring about a result |
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