已知直线l1为曲线y=x2+x-2在点(1,0)处的切线,l2为该曲线的另一条切

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问题:

已知直线l1为曲线y=x2+x-2在点(1,0)处的切线,l2为该曲线的另一条切线,且l1⊥l2

(Ⅰ)求直线l2的方程;

(Ⅱ)求由直线l1、l2和x轴所围成的三角形的面积。

考点:导数的概念及其几何意义两直线平行、垂直的判定与性质直线的方程两条直线的交点坐标
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治疗久泻,不宜过用 ()

A.分利

B.健脾

C.补肾

D.升提

E.固涩

题型:解答题

无症状性心肌缺血的防治中不包括()

A.预防感染治疗

B.β受体阻滞剂治疗

C.硝酸酯类药治疗

D.适当减轻工作

E.钙通道阻滞剂治疗

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医疗机构购进药品,逐批查验,并建立真实完整的记录,执行的制度是()

A.进货验收制度

B.效期管理制度

C.采购管理制度

D.保管、养护管理制度

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Marie Curie was a Polish-born physicist and chemist and one of the most famous scientists of her time. Together with her husband Pierre, she won the Nobel Prize in 1903, and another one in 1911.

Marie Sklodowska was born in Warsaw on 7 November 1867, the daughter of a teacher. In 1891, she went to Paris to study physics and maths at the Sorbonne where she met Pierre Curie, professor of the School of Physics. They married in 1895.

The Curies worked together studying radioactivity(放射性), building on the work of the German physicist Roentgen and the French physicist Becquerel. In July 1898, the Curies announced the discovery of polonium(钋). At the end of the year, they announced the discovery of another, radium(镭). The Curies, along with Becquerel, won the Nobel Prize for Physics in 1903.

Pierre’s life was cut short in 1906 when he was knocked down and killed by a carriage. Marie took over his teaching post, becoming the first woman to teach at the Sorbonne, and devoted (献身于) herself to continuing the work that they had begun together. She received a second Nobel Prize, for Chemistry, in 1911.

The Curies’ research was important in developing X-rays in surgery. During World WarⅠ, Marie helped fixed X-ray equipment, which she herself drove to the front lines. She helped train doctors for the International Red Cross.

Although she achieved much success, men scientists in France were still against Marie, and she never received any financial help from her work. By the late 1920s her health was beginning to become worse. She died on 4 July 1934 from her dangerous research. The Curies’ eldest daughter Irene was a scientist and winner of the Nobel Prize for Chemistry.

小题1:All the following people contributed to Marie’s first Nobel Prize EXCEPT _____.

A.Irene

B.Pierre

C.Becquerel

D.Roentgen小题2:We can know from the text that Marie’s work______.

A.won her respect from men scientists

B.brought her some financial help

C.had a bad effect on her health

D.had no influence on her children小题3:Which is the right order of the following events?

①Marie became a teacher at the Sorbonne.

②Marie helped train doctors.

③The Curies discovered polonium.

④The Curies won the Nobel Prize for Physics.

⑤The Curies discovered radium.

A.①④⑤③②

B.③⑤④①②

C.⑤④①③②

D.②③⑤①④小题4:Which of the following about Marie is NOT true?

A.She married at the age of 28.

B.Her parent was a teacher.

C.She was the first woman teacher at the Sorbonne.

D.She helped the International Red Cross fix X-ray equipment.

题型:解答题

急性肾炎的病理类型为()

A.较重肾小球肾病

B.系膜增生性肾小球肾炎

C.毛细血管内增生性肾小球肾炎

D.渗透性肾病

E.膜性肾小球肾炎

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