of credit by her competitors.

　　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.

　　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 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.

　　【解题导语】　文章通过几个科学家对女科学家Rosalind Franklin在DNA研究中作用的讨论，客观地论述了她的贡献。这位曾经被誉为"DNA隐身女士"的Franklin对DNA研究的贡献在作者的叙述中终于浮出水面。

　　5．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.

　　解析：选B。主旨大意题。从全文可知，文章中谈论了Franklin 女士在DNA研究领域内的成就，以及其他获奖科学家对她的负面评价，体现出她所遭受的不公平的待遇。故选择B。

　　6．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

　　解析：选C。事实细节题。从文中第五段What she did was produce Xray pictures that told...inside out.Franklin 拍了这个X射线图像是要告诉Watson 和Crick 他们早期的一个模型弄反了，即指出了他们的一个错误。

　　7．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.

　　解析：选D。推理判断题。从最后一段最后一句．..Franklin is finally coming into the light.可知，她终于浮出水面被人们所知，说明了她以前的贡献是不为人所知的。故选择D。

　　8．What is the writer's attitude toward Wilkins，Watson and Crick?

A．Disapproving. B．Respectful.