问题 不定项选择

氢原子能级的示意图如图所示,大量氢原子从n=4的能级向n=2的能级跃迁时辐射出可见光a,从n=3的能级向n=2的能级跃迁时辐射出可见光b,则

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A.氢原子从高能级向低能级跃迁时可能会辐射出γ射线

B.氢原子从n=4的能级向n=3的能级跃迁时会辐射出紫外线

C.在水中传播时,a光较b光的速度小

D.氢原子在n=2的能级时可吸收任意频率的光而发生电离

答案

答案:C

选择题
阅读理解

 

第三部分阅读技能 (共三节,满分35分)

阅读理解(共12小题;每小题2分,满分24分)

阅读下列短文,从每题所给的A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。

A

For most people, the word “fashion” means “clothes”. But people may ask the question, “What clothes are in fashion?” And they use the adjective (形容词) “fashionable” in the same way: “She was wearing a fashionable color.”

But of course there are fashions in many things, not only in clothes. There are fashions in holidays, in restaurants, in films and books. There are even fashions in school subjects, jobs…and in languages.

Fashions change as time goes. If you look at pictures of people or things from the past, you will see that fashions have always changed. An English house of 1750 was different from his grandson in 1860.

Today fashions change very quickly. Some of this is natural. We hear about things much more quickly than in the past. Newspapers, radios, telephones and television send information from one country to another in a few hours.

New fashions mean that people will buy new things, so you see there is money in fashion.

41  From this passage we know that “fashion” means _________.

A  clothes   B  many things    C  most of the popular things    D  everything

42  Which of the following things is fashionable today?

   A  Surfing on the Internet

B  Having a family dinner on New Year’s Day

C  Learning to sing songs on the radio

D  Doing morning exercises at school.

43  Today fashions change very quickly because _______.

   A  People read newspapers every day  

B  radios send information from one country to another

   C  new things that people like are often shown on TV

   D  people quickly learn what is happening in the world

44  “There is money in fashion.” means ________.

   A  clothes are expensive    B  money comes from fashion

   C  people like new things   D  there are no fashions without money