酿酒酵母最有名的是它在()中的重要性。 A.抗生素生产 B.酒精发酵 C.酸菜生产

题型:单项选择题

问题:

酿酒酵母最有名的是它在()中的重要性。

A.抗生素生产

B.酒精发酵

C.酸菜生产

考点:微生物学微生物学综合练习微生物学综合练习题库
题型:单项选择题
在实验室制备CH3COOC2H5时在反应试管中不需要添加的试剂是(  )

A.C2H5OH

B.CH3COOH

C.浓硫酸

D.碳酸钠溶液

题型:单项选择题

下列实验设计及操作,其现象足以说明结论的是[ ]

A.操作:取某氢氧化钠溶液样品放入试管中,再滴加一定量的稀盐酸

   现象:没有气泡冒出

   结论:该氢氧化钠溶液一定没有变质

B.操作:将浓盐酸和大理石反应放出的气体通入澄清石灰水

   现象:石灰水始终未浑浊

   结论:该石灰水一定变质

C.操作:向滴有酚酞的稀氢氧化钠溶液的试管中滴加一定量的稀盐酸

   现象:红色褪去

   结论:氢氧化钠与盐酸一定发生了反应

D.操作:将充满二氧化碳气体的试管倒扣在盛有氢氧化钠溶液的水槽中

   现象:试管内液面上升

   结论:二氧化碳与氢氧化钠一定发生了反应

题型:单项选择题

化脓性脑膜炎并发硬膜下积液,治疗应首选()

A.硬膜下穿刺排液

B.穿刺持续引流

C.加大抗生素剂量

D.加大脱水剂量

E.硬膜下注射抗生素

题型:单项选择题
Harvard University named historian Drew Gilpin Faust as its first female president on Sunday, ending a lengthy and secretive search to find a successor(接任者)to Lawrence Summers .
The seven-member Harvard Corporation elected Faust, a noted scholar on History of the American South and dean of Harvard’s Radcliffe Institute for Advanced Study, as the university’s 28th president.
“This is a great day, and a historic day for Harvard,” James R. Houghton, chairman of the presidential search committee, said in a statement. “Drew Faust is an inspiring and accomplished leader, a superb scholar, a dedicated  teacher, and a wonderful human being.”
Her selection is noteworthy given the heated debates over Summers’ comments that genetic differences between the sexes might help explain the lack of women in top science jobs.
Faust has been dean of Radcliffe since 2001, two years after the former women’s college was combined into the university as a research center with a mission to study gender issues.
Some professors have quietly groused that the 371-year-old university is appointing a fifth president who is not a scientist. No scientist has had the top job since James Bryant Conant retired in 1953; its last four have come from the fields of classics, law, literature and economics.

1,3,5

 
Faust is the first Harvard president who did not receive a degree from the university since Charles Chauncy, a graduate of Cambridge University, who died in office in 1762. She attended the University of Pennsylvania.

“Teaching staff turned to her constantly,” said Sheldon Hackney, a former president of the University of Pennsylvania and historian who worked closely with Faust. “She’s very clear. She has a sense of humor, but she’s very strong-minded. You come to trust in her because she’s so solid.”
小题1:Which might be the best title for the passage?
A.Harvard named its 1st female president.
B.History of Harvard University changed.
C.Debates on female equality ended
D.Drew Gilpin Faust, a famous woman historian.
小题2:Which is NOT true about Drew Gilpin Faust?
A.She is the 28th president of Harvard University.
B.She is a famous scholar from the American South.
C.She isn’t a graduate from Harvard University
D.She was head of Radcliffe Institute for Advanced Study.
小题3:Lawrence Summers held the view that      .
A.women cannot achieve as much as men in management
B.women cannot hold important positions in society
C.women can match men in science jobs
D.few women make top scientists owing to genes
小题4:The underlined word “groused” in the 6th paragraph means       .
A.approved B.commented C.complained D.indicated
小题5:This passage probably appears in a      .
A.biography B.personal letterC.research paper D.newspaper report
题型:单项选择题

一学校的750名学生或上历史课,或上算术课,或两门课都上。如果有489名学生上历史课,606位学生上算术课,则有( )位学生两门课都上。

A.117

B.144

C.261

D.345

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