要了解更多信息，请参阅官方的答案：书。
A.For more information, refer as official reference books. B.For more information, refer to official reference books. C.More information referred to official reference books.正确答案B
要了解更多信息，请参阅官方的答案：书。
A.For more information, refer as official reference books. B.For more information, refer to official reference books. C.More information referred to official reference books.正确答案B
