问题 填空题

幻灯机和投影仪是将幻灯片或投影仪上的图象(相当于物体),通过______镜在屏幕上形成一个放大的像的仪器,近视眼可以配戴用______镜制作的近视眼镜可以看清较远处的物体.

答案

(1)2f>u>f,凸透镜成倒立、放大的实像,应用于幻灯机和投影仪.

(2)近视眼的晶状体变厚,使像成在视网膜的前面,凹透镜对光线有发散作用,使原来会聚成像的光线错后会聚到视网膜上,使人能看清远处的物体.

故答案为:凸透;凹透.

阅读理解

We use the Internet for many things: business, shopping, writing letters, talking to people, finding information, and so on. In recent years, a new kind of English has grown on the Internet. There’s no real word for it yet, so we’ll call it e-talk. People don’t like typing too much. To save time, they turn phrases (短语) into a few letters called acronyms(首字母缩略词). Acronyms are often used in chat rooms.

Some of them are:

BTW(by the way)     BRB (be right back)

LOL (laughing out loud) IMO (in my opinion)

People also use many abbreviations. They are shortened forms of words. Some common abbreviations are:

info (information)    puter (computer)    pic (picture)      sec (second)

We usually don’t see people when we communicate on the Net, so people have new ways to show feelings. Most people use their keyboards to draw “feeling”, such as:

: ) (happy)     :-( (sad) ;    : P (joking)   : O (surprised)

These days, many forums have picture feelings. For example:

happy          sad         angry        cool

There are even whole new words, like ‘newbie’ (someone who is new on a chat board or forum). When you write something bad about someone else, it’s called ‘flaming’ the person.

It takes time to get used to e-talk. Also, different groups in the Net have their own special ways of communicating. Newbies sometimes have to ask other people what they mean. As the Internet grows, e-talk will continue to grow and change.

小题1: Why do people type acronyms?

A.To show their feelings.

B.To make jokes.

C.Because people can type them quickly.

D.In this way, newbies won’t understand them.小题2:What does “My puter is not working well. :-( ” mean?

A.The person is happy about getting a new computer.

B.The person has to go away from their computer.

C.The person is angry at somebody.

D.The person is sad that his computer is having problems.小题3:If someone is angry, what may he type?

A.

B.

C.LOL

D.BRB小题4:E-talk will probably_________.

A.keep changing

B.stay the same

C.be used by people on the telephone

D.be easy for newbies to understand小题5:People can do the following through the Internet except _________.

A. doing shopping                B. writing diaries

C. eating foods                   C. playing games

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