【名词&注释】
单倍体(haploid)、邓小平、北京奥运会(beijing olympic games)、发展阶段、生活史(life history)、配子体(gametophyte)、中共十四大、第一个(first)、中共十二大、细胞有丝分裂(cell mitosis)
[单选题]卷柏的孢子叶不具叶舌。( )
A. 正确
B. 错误
查看答案&解析
举一反三：
[单选题]
A. what
B. which
C. whatever
D. whichever
[单选题]For breakfast he only drinks juice from fresh fruit ___ on his own farm.
A. grown
B. being grown
C. to be grown
D. to grow
[单选题]EFour 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 DN
A. 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.
B. Her name was Rosalind Franklin. “She should have been up there,” says historian Mary Bowden. “If her photo 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 scholar doubt that Franklin was not only robbed of her life by disease but robbed of credit by her competitions.
C. At Cambridge University in the 1950s, Watson and Crick 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 reflecting the shape.
D. 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.
E. 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 go or be put in her place.
F. 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 “Franklins was only two steps away from the solution.”
G. 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.
H. 57. What is the text mainly about?
I. The disagreements among DNA researchers.
J. The unfair treatment of Franklin.
K. The process of discovering DNA．
L. DThe race between two teams of scientists.
[单选题]Which of the following is the result of the volcanic eruption?
A. People stop traveling in Europe
B. Airlines suffer from the loss of planes
C. It becomes dangerous for animals to eat outside
D. Farmers have lost many of their animals
[单选题]在植物的生活史中，配子体总是单倍体，孢子体总是二倍体。( )
A. 正确
B. 错误
[单选题]邓小平曾公开评价某次会议，“虽然过去我们已经进行了多年的社会主义建设，但是我们仍然有足够的理由说，这是一个新的历史发展阶段的开端。”这次会议是
A. 中共八大
B. 中共十四大
C. 中共十二大
D. 中共十一届三中全会
[单选题]在北京奥运会上成为我国第一个(first)蝉联奥运会柔道冠军的运动员是
A. 内蒙古选手
B. 广西选手
C. 广东选手
D. 河南选手
[单选题]借助光学显微镜，可详细观察生活细胞有丝分裂(cell mitosis)的全过程。( )
A. 正确
B. 错误
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