问题 选择题

我们学过的许多成语包含了物理知识,下列成语中的“影”哪个是由光的反射形成的(  )

A.杯弓蛇影

B.形影不离

C.形单影只

D.立竿见影

答案

A、杯弓蛇影是由于对面的墙壁上挂着一个弓,弓的影子正好映在透明的酒杯中,好像一条蛇,因此属于平面镜成像,故A选项中的现象是由于光的反射形成的;

B、形影不离是由于自己的身体遮挡了光线,所以形成了自己的影子,属于光沿直线传播现象,故B选项不合题意;

C、形单影只中的影是指自己的影子,属于光沿直线传播现象,故C选项不合题意;

D、立竿见影是指杆遮挡了光线,形成了杆的影子,因此属于光沿直线传播现象,故D选项不合题意.

故选 A.

阅读理解

After a very busy afternoon,as I walked into my house,I heard the phone ringing. It was my friend Lydia,upset over an argument with her husband. My usual approach is to offer advice,but this time,exhausted from chores,I simply sat down in a chair and listened to my friend’s frustration  and sadness. Without the disturbance of judgment or the desire to comfort her,I stayed totally quiet while she talked. Eventually Lydia’s depression eased and we said our goodbyes. The next day she phoned to thank me. “I’m so grateful for the way you helped me through this,”she said.

At first I was surprised. After all,I had done nothing except be there for her. But after I had my own venting (发泄的)  experience with another friend later that evening,I realized that my focused silence had some value. In fact,most relationship experts agree that talk is cheap;it’s listening that’s rare and valuable It allows you not only to hear what the other person is saying,but also to have a clear understanding of her thoughts and feelings. And for the speaker,that level of understanding translates into concern and respect.

Unfortunately,listening isn’t as easy as it sounds. Thanks  to  schedules  filled  with  family and work,multitasking has become a barrier (障碍) to listening. My tiredness may have been the only thing stopping me from folding  laundry or checking my e­mail while Lydia talked that afternoon.

Another barrier to listening is our listening system:Most of us take in only about half of what’s being said during a conversation,according to the International Listening Association. Research shows that we speak at 125 to 150 words per minute,yet think at 500 words a minute. Therefore,because we think much more quickly than we  speak,it is easy for us to lose our concentration when  listening to speakers.

While it can be hard to focus at times,it’s a skill worth developing. With a little practice  (employing some techniques),you can become a better listener.

小题1:Why didn’t the author give any advice to Lydia that afternoon?

A.Because she thought her keeping silence was better for Lydia.

B.Because she didn’t know how to comfort Lydia.

C.Because she was too tired to talk to Lydia.

D.Because she couldn’t cut in while Lydia was talking.小题2:In Paragraph 2,the author mainly talks about________.

A.the importance of listening

B.the importance of venting anger

C.her own listening experience

D.her own venting experience小题3:The author uses the result of the research in Paragraph 4 to mainly show that________.

A.we think much more quickly than we speak

B.we can only understand about half of what we hear

C.there is not much thinking time available while we are listening

D.we lose our concentration easily while we are listening小题4:What will be discussed following the passage?

A.Why listening is valuable.

B.What we should do while listening.

C.How to become a good listener.

D.How to stop drifting off while listening.小题5:The first paragraph serves as a(n)________.

A.explanation

B.introduction

C.comment

D.background

多项选择题