When the research on the effect of elect

题型:阅读理解

问题:

When the research on the effect of electric fields on E.coli was begun in 1962, it was essential that a biologist–specifically, a microbiologist–contributed to the project.She does not want her name used because she did not become a scientific researcher for fame, but rather for the challenge of putting pieces of a scientific puzzle together.

As a girl, she was inspired by the work of great scientists: she read the story of the cure of malaria in the Panama Canal; she also read a biography of Madame Curie.These accounts inspired her to pursue a career in scientific research.After high school, she worked for the Michigan Department of Health, where she did research in biology and microbiology.There, her colleagues saw her talent and encouraged her to pursue science as a career.She went on to earn a bachelor’s degree from Michigan State University in 1948 in medical technology.

When she began working at Michigan State in the early 1960s,

she was balancing the demands of scientific research with the needs

of her family.At that time both of her children were in school.She

would work in the lab in the morning while they were at school,

go home to see them at lunch, return to the lab for the afternoon, go

home for dinner, and return to the lab in the evening, if necessary.

At that time, there were fewer women scientists working than

there are today, but she encountered several in her career.At the

Michigan Department of Health, many of her colleagues were women and, consequently, she did not feel isolated because of her gender–nor did she feel that she was treated differently because she was a woman.      

While working at Michigan State, she also felt that she was treated with respect by her peers.Her colleagues, among them doctors and Ph.D.chemists, all treated her as an equal.On the whole, she believes that there is not a great deal of difference between men and women in science.

56.Why does the woman scientist refuse to let out her name?

A.Because she is a shy lady.

B.Because she doesn’t mind her fame.    

C.Because she never takes pride in her research.

D.Because she never works for her fame.

57.What is the noble lady scientist really interested in?

A.The life stories of other women scientists.

B.Biology and microbiology.

C.The secret of the success of the other scientists.

D.The difference between men and women scientists.

58.Who helped and encouraged her to carry on her scientific research?

A.Her family and friends.                             B.Madame Curie.

C.Her colleagues and other scientists.              D.Some of the officials.

59.What is the whole passage mainly about?

A.The life story of a famous woman scientist with great success.

B.A brief introduction about an unknown great woman scientist.

C.The new development of a special woman scientist.

D.The secret of an infamous woman scientist.

考点:科教类阅读
题型:阅读理解

红细胞生成素(EPO)是体内促进红细胞生成的一种糖蛋白,可用于治疗肾衰性贫血等疾病。由于天然EPO来源极为有限,目前临床上使用的红细胞生成素主要来自于基因工程技术生产的重组人红细胞生成素(rhEPO),其简要生产流程如下图。请回答:

(1)图中①所指的是______技术。

(2)图中②所指的物质是______,③所指的物质是_______。

(3)培养重组CHO细胞时,为便于清除代谢产物,防止细胞产物积累对细胞自身造成危害,应定期更换_________。

(4)检测rhEPO的体外活性需用抗rhEPO的单克隆抗体。分泌该单克隆抗体的_____细胞,可由rhEPO免疫过的小鼠B淋巴细胞与小鼠骨髓瘤细胞融合而成。

题型:阅读理解

亚洲幅员辽阔,自然环境复杂多样,下列叙述正确的是( )

A.亚洲的河流由四周流向中部

B.亚洲的地势中部高,四周低

C.亚洲气候类型是赤道为中心,南北对称分布

D.亚洲是世界上跨经度最广,东西距离最长的大洲

题型:阅读理解

(8—10题共用题干)男婴,2岁,发现右腹部包块2个月,进行性增大,查体:患儿发育、营养正常,右腰部饱满,可触及约8cm×12cm×15cm大小包块,质中硬,光面光滑,略可活动,包块越过中线2cm。镜下血尿(+++),BP120/70mmHg。

最有价值的检查是

A.腹部X线平片

B.腹部超声检查

C.IVP

D.CT平扫+增强

E.MRI

题型:阅读理解

翻瓣术后可探测牙周袋的时间()

A.4周以后

B.6周以后

C.8周以后

D.3个月以后

E.半年以后

题型:阅读理解

当选择了前面的状态,选取哪个选项会保留相关状态?()

A.允许框架混合

B.允许线性历史

C.允许非线性历史

D.允许双线性插值

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