In the passage the author's attitude towards "mixed-ability teaching" is ______.

A．A rise in global temperature less than 1℃ is unlikely to cause enormous lifestyle changes.
B．Global warming would affect many things such as agriculture and people's life.
C．Global warming would lead to rise in the sea level directly.
D．The overwhelming majority share Professor Woug's prediction.

A．a news report or magazine article
B．a financial report of a certain department
C．a research paper of global temperature
D．a summary of a research