A．It should be assimilated thoroughly.
B．It should be enclosed in quotation marks.
C．It should be paraphrased by the author.
D．It should be authorized by the source.

A.It
B.
B．It
C.
C．It
D.
D．It

【参考答案】

B
解析：信息明示题。文章第三段指出，如果你要直接引用资料，则需要用引号标示出来，所以B正确。