试题与答案

小华同学为研究胆矾晶体加热后所得物质的组成,做了以下实验:取2.50g胆矾晶体(

题型:计算题

题目:

小华同学为研究胆矾晶体加热后所得物质的组成,做了以下实验:取2.50g胆矾晶体(CuSO4·xH2O)加热使其分解,绘制出固体的质量随温度的变化关系图。如图到t1℃时该固体完全失去结晶水,化学方程式为:CuSO4·xH2OCuSO4+xH2O↑。

(1)计算胆矾晶体中x的值。(注:CuSO4·xH2O的相对分子质量可表示为:160+18x)

(2)升温到t2℃,残留固体是黑色物质,通过计算预测其化学式。

答案:

(1)5 (2)黑色物质是CuO

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题型:阅读理解

One of the most famous writers from England by far is Agatha Christie.

Agatha Christie’s real name was Agatha Miller. She was born in England in 1890.She married Archibald Christie when she was 24 years old, and she changed her family name to Christie.

She sold her first mystery book in 1920. This book was the first time that the world met Mrs.Christie’s famous detective Hercule Poirot. Ten years after that, Mrs. Christie wrote her book with her second famous detective, Miss Marple.

In 1928, Mrs. Christie’s first marriage broke up. She married M.E.L. Mallowan in 1930, but she still wrote her books under the name Agatha Christie.

In her life, Agatha Christie wrote 60 books, 16 plays, and more than 100 short stories. She passed away in 1976 when she was 85 years old. Her books can still be found on sale in bookstores all around the world.

小题1: What did Aghta Christie do?

A.She was a detective.

B.she wrote books.

C.She was a mystery.

D.She knew famous detectives.小题2: Who was Hercule Poirot?

A.A detective in her books.

B.One of her books.

C.Her husband.

D.A writer.小题3: What happened in 1976?

A.Agatha Christie died.

B.Agatha Christie left her husband.

C.Agatha Christie wrote her last book.

D.Agatha Christie wrote a short story.小题4: What’s the best title of the passage?

A.Books about detectives.

B.Famous detectives.

C.A famous writer.

D.Agatha Christie or Agatha Miller.

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题型:多项选择题

患者男性,39岁。抽烟多年,每天30支,喝酒多年,每天8两,近3个月自述性欲减退,阴茎勃起硬度下降、不足以过正常性生活。就诊于医院男科,体检、血尿化验和专科检查均无异常。应采取针对性的护理措施是().

A.早睡早起,养成良好的生活习惯

B.劝其少喝可乐

C.指导口服药物西地那非

D.治疗前列腺炎

E.性生活的辅导性教育

F.与患者沟通,劝其戒酒、戒烟

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