试题与答案

乙烯雌酚是人工合成的激素类药物,对垂体促性腺激素的分泌有抑制作用,能改善体内激素

题型:选择题

题目:

乙烯雌酚是人工合成的激素类药物,对垂体促性腺激素的分泌有抑制作用,能改善体内激素的平衡状态,破坏肿瘤组织赖以生长发育的条件,对治疗前列腺癌和乳腺癌有明显的疗效,其结构如图.下列有关叙述中正确的是(  )

A.乙烯雌酚的分子式为C18H22O2

B.乙烯雌酚可与NaOH和NaHCO3发生反应

C.1mol该有机物可以与7molBr2发生反应

D.该有机物分子中一定有8个碳原子共平面

答案:

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参考答案:D解析:该题是基础理论记忆题。先天性上睑下垂的病因主要是由于动眼神经核发育不良或提上睑肌发育不良所致,后天性上睑下垂的病因主要有动眼神经麻痹、提上睑肌损伤、重症肌无力、交感神经疾患等。答案...

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The film studio is like a large factory, and the indoor stages are very big indeed. Scenery of all kinds is made in the studio. Churches, houses, and forests are all built of wood and cardboard. Several hundred people work together to make one film. Some of these people are the actors and actresses. The director of the film, however, is the most important person in a film studio. He decides how the scenes should be filmed and how the actors should act.

Most people go to see a film because they know the film stars are in it. Sometimes the film may be very poor. It is best to choose a film made by a good director. Some famous directors make their films very real; people feel that they themselves are among the people in the films.

小题1: Making a film is ________ .

A.very simple

B.quite funny

C.quite interesting

D.not very easy小题2: The director of a film ________ .

A.says how only one scene should be filmed

B.tells the actors and actresses how they should not act

C.is the most important person in a film studio

D.all the above小题3: Which of the following statements is NOT true?

A.Writing the story for the film is a part of making a film.

B.The indoor stages in the film studio are very big.

C.All of the people in film making are actors and actresses.

D.Shooting the film often takes many months.小题4:The best title for the passage is "________ ".

A.Writing the Story

B.Actors and Actresses

C.A Director

D.Making a Film

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A.17.7%
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