[单项选择]
The Book of Life
So far, scientists have named about 1.8 million living species (特种), and that’s just a small part of what probably exists on Earth. With so many plants, animals, and other creatures covering the planet, it can be tough to figure out what type of spider is moving up your leg or what kind of bird is flying by.
A soon-to-be-launched Web site might help. An international team of researchers has announced the creation of a Web-based Encyclopedia (百科全书) of Life (EoL). The project aims to catalog every species on Earth in a single, easy-to-use reference guide.
To get the encyclopedia started, the creators will use information from scientific databases (数据库) that already exist. And eventually, in special sections of the site, non-scientists with specialized (专门的) knowledge will get to join in. Bird-watchers, for example, will be able to input which birds they’ve seen and where. The technology for this kind of tool has o
A. animals are people’s friends.
B. there are numerous living species on Earth.
C. it is easy to see spiders and birds.
D. there are many types of spiders and birds.