短文填空，根据上下文意思填入所缺单词。共10小题，每小题1分。
The word “encyclopaedia” comes from Greek. It _____(mean) “general education”. An encyclopaedia is ___ kind of reference book(参考书) and it contains the information from either all branches of knowledge _____ a special branch of knowledge.
People ______(begin) to use it about 2,000 years ago. The _____(old) one is natural historian. ___ was written by Pliny the Elder. The modern encyclopaedias developed from dictionaries around the 17th century. Some encyclopaedias are made up ____ only one volume(册), but _____ may have lots of volumes. There _____(be) also some online encyclopaedias, such as Wikipedia. They are often free for people ____(look) for information.