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If you are writing or studying, it makes much difference where the light comes from. People use  36  and pens every day. They have to be very careful about the  37  of the light because the light shines on their work.
Every  38  gets its light either from daylight  39  the window or from the lamps,   40  no matter what kind of light it is, the way it shines is very important to the eyes.
Take a book and sit with your  41  towards the window, and try to read. Your shadow(影子) falls all over the page and makes it  4  for your eyes as if you were in a  43  room. Now turn around and face the window. The page is in shadow again,  44  the bright light is in your eyes.Try sitting with your  45  side towards the window. This is very good for reading, but if you were writing, the shadow  46  fall across the page and trouble you  47 .There is another way – sit  48  your left side to the window. Now everything is perfect for  49   as well.
Whatever kind of light is in the room, the rule about the right way to sit is  50  the same. So you see different ways to sit make much difference in writing or studying.
【小題1】.

If you want to find out a piece of information about anything , the best place to search for it is Wikipedia（維基百科）. This online encyclopedia is written by thousands of people around the world. Anyone can add or change the information if he or she finds it not correct or not well written. In this way, people who know a lot about a certain subject can write about it even if they are not university professors.

What is more, Wikipedia includes articles written in about 235 languages. This fact makes it one of the few websites (網站)on the internet that are truly international. It was started in 2001 by Larry Sanger and Jimmy Wales, as a free online English-language encyclopedia project. By April 2008, over 10 million articles had been put on Wikipedia. A quarter of the articles are in English. Wikipedia is also a place where people can find the latest news.

However, Wikipedia has its own problems. There have been many complaints that some of the information on Wikipedia is not accurate（準確的）and some important subjects are not included. This has led to arguments between the writers of articles. The people running Wikipedia say that the accuracy of the information is improving and that it is one of the top 20 visited websites on the internet.

So, if you are looking for some information, why not try Wikipedia?

1.Wikipedia is ___________.?

A. a computer game? ?????????? B. an online magazine

C. a free university????????????? D. a website encyclopedia

2. People who write on Wikipedia__________.

A. know much about a certain subject??????

B. likes writing different stories

C. should be university professors?? ??????

D. are usually famous scientists

3.Wikipedia is truly international because_________.

A. everything is written in English???

B. the articles are in about 235 language

C. there are over 10 million articles??

D. each writer can write in Various languages

4.Besides information about different subjects, people can also__________ on Wikipedia.

A. watch interesting movies??????? B. send e-mail to friends

C. read about the latest news?????? D. play exciting games