Wiki is the Hawaiian(夏威夷语) word for “quick”. Today, it is a very popular word among Internet users. What does it mean? Wiki（维基） is a wedsite where everyone can create（创建） and chage its pages. The most famous wiki is Wikipedia, an online encyclopedia (百科全书) that offers millions of articles. But there are lots of other wikis such as Wikihow, Wikinews and Wiktionary. They all have one thing in common. They are created and managed by a wiki community（社区）.
A wiki community is made up of the millions of people who visit a wike site. Many of the visitors are readers looking for information. Some visitors are _____ who creat articles for the site. Other visitors act as editors (编辑) who read the articles and check them for mistakes. Wiki are simple to creat and use, and they are becoming more and more popular.
But is wiki information reliable? If any one can add, delete or change information, can the information be trused? This depends on the wiki community. The community usually tries to make sure that the information on a topic is correct. If someone in the community sees an article with incorrect information, that person can edit or change it.
On a big wiki like Wikipedia, thousands of pages change every day. At certain times of the day there can be 50 or more pages changing every minute! Sometimes the changes may be as simple as spelling mistakes. Other times they are changes, additions or deletions to the content(内容).
A wiki gives the community a way to get information together and change it as things change. Wikis are greatly changing the way we get information. Do you want to find an interesting quote(语录) to use in a writing project or report? Go to Wikiquote. Do you want to learn the most recent information about a place you’re planning to visit? Try Wikitravel.

What do wikis have in common?

A．They all provide the latest news.

B．They all have millions of articles.

C．They are all online encyclopedias.

D．They are all made by a wiki community.

Which of the following can be put in the blank in Paragraph 2?

A．writers	B．readers
C．editors	D．users

What does the underlined word “reliable” in Paragraph 3 mean?

A．Valuable	B．Believable
C．Interesting	D．Enough

What can we learn from Paragraph 4 ?

A．Wiki are easy to create and use.

B．Wikis change the way we get information.

C．Pages on wiki sites are changing all the time.

D．Spelling mistakes are very common on Wikis.

What does the writer think of Wikis?

A．They are very popular.

B．They change too quickly.

C．There are no mistakes on them.

D．They are not as good as printed books.