题目内容：

阅读下列短文, 从每题所给的四个选项（A、B、C和D）中, 选出最佳选项。

What do you do when you need to look something up? Go to the library? Open an encyclopedia(百科全书)? Click onto the Internet? These days, most people go straight to Wikipedia, the online encyclopedia. But how reliable is it?

There’s no denying the popularity and usefulness of Wikipedia. It attracts as many as 78 million visitors every month, and the site is available in more than 270 different languages. It’s one of the most comprehensive resources available, which includes almost all details, facts and information that may be concerned. It’s got much more information than an ordinary encyclopedia. The site is updated on a daily basis by thousands of people around the world. Anyone with an Internet connection can log on and edit the contents or add a new page. And you don’t need any formal training.

Of course, there are some controls. Wikipedia has a team of more than 1,500 administrators who check for false information. And main targets for harmful comments(such as politicians) are off-limits to public editing. But with more than 16 million articles to keep an eye on, it isn’t easy. So, while Wikipedia benefits from being constantly updated with information from all over the world, it’s also open to “vandals”（恣意破坏公共财物者）.

Some of the damage is easy to notice. One person drew devil horns and a moustache on Microsoft chairman Bill Gate’s photo, while another edited Greek philosopher Plato’s biography to say he was a “Hawaiian weather man who is widely believed to have been a student of ‘Barney the purple Dinosaur’.

But other things are harder to spot. The most common form of vandalism (恣意破坏公共财物罪)involves adding tiny items of false information into the biography of a famous person. Unbelievably, some of this misinformation has appeared in newspapers, with The Daily Mail, The Guardian and The Independent all having fallen victim to the dirty tricks. For example, in an article about British comedian Sir Norman Wisdom, one newspaper claimed that he co-wrote Dame Vera Lynn’s wartime hit There’ll be bluebirds over the White Cliffs of Dover. He did no such thing. And in other article, it was reported that TV Theme tune composer Ronnie Hazlehurst had written the S Club 7’s hit Reach again, not true.

So, if you’re going to use any information from Wikipedia, make sure you double-check it first.

1.We can learn from the passage that ______.

A. because of its popularity, 78 million people from 270 countries visit Wikipedia    monthly.

B. updated by people around the world, the site is more likely to be damaged by   hackers.

C. anyone who has access to the Internet can edit any contents of Wikipedia as they like.

D. the primary job of the administrators is to make sure true information is conveyed.

2. What’s the writer’s attitude to Wikipedia?

A. Critical.          B. Doubtful.

C. Objective.         D. Positive.

3.Paragraph 5 mainly tells us ______.

A. it is really difficult to find out tiny items of false information.

B. no matter how famous the papers are, they can also be cheated.

C. you can never be careful enough while searching for information.

D. it was Sir Norman Wisdom who wrote the S Club 7’s hit Reach.

4.What’s the best title for the text?

A. How to look something up in Wikipedia?

B. Wikipedia has advantages and disadvantages

C. Why Wikipedia is so popular?

D. Wikipedia is reliable to use