问题 单项选择题

维生素C可使下列哪一种测定产生假阳性()。

A.酶法葡萄糖测定

B.班氏法葡萄糖测定

C.酶法胆固醇测定

D.酶法三酰甘油测定

E.JG法测定血清胆红素

答案

参考答案:B

解析:尿液在低葡萄糖浓度时(14mmol/L),维生素C与试带中的试剂发生竞争性抑制反应,使干化学产生假阴性反应,而使班氏法产生假阳性。

解答题
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There are many famous museums throughout the world where people can enjoy art. Washington, D.C. has the National Gallery of Art; Paris has the Luvre; London, the British Museum. Florida International University (FIU) in Miami also shows art for people to see. And it does so without building, or even a wall for its drawing and paintings. FIU has opened what it says is the first computer art museum in the United States. You don’t have to visit the University to see the art. You just need a computer linked to a telephone. You can call the telephone number of a university computer and connect your own computer to it. All of the art is stored in the school computer. It is computer art, produced electronically by artists on their own computers. In only a few minutes, your computer can receive and copy all the pictures and drawings. Robert Shostak is direction of the new computer museum. He says he starts the museum because computer artists had no place to show their works.

A computer artist can only record his pictures electronically and send the records to others to see on their computers. He can also put his pictures on paper. But to print good pictures on paper, the computer artist needs an expensive laser printer (激光印刷) . Robert Shostak says the electronic(电子的) museum is mostly for art or computer students at school and universities. Many of the pictures in the museum are made by students. Mr Shostake said the FIU museum will take computer art more fun for computer artists because more people can see it. He says artists enjoy their work much more if they have an audience. And the great number of home computers in America could mean a huge audience for the electronic museum.

小题1:The main purpose of this text is to give information about_______.

A. museums throughout the world

B. an electronic art museum in Miami, U.S.A.

C. art exhibitions(展览会) in Florida International University

D. latest development of computer art

小题2:To see the art in FIU museum, you need______.

A.floppy discs(软盘)

B.a computer and a printer

C.pictures and drawings on paper

D.a computer connect to the museum by telephone line小题3:The museum was started when______.

A Robert Shostak wanted to do something for computer scientists

B. Robert Shostak wanted to help computer artists

C. art students needed a place to show their works

D. computer scientists wanted to do something about art

小题4:The words “an audience” in the last paragraph refer to ________.

A.art students

B.computer owners

C.exhibits in the museum

D.those who will enjoy art.