单项选择题

请根据下面短文回答下列问题：
There are two important men in my office—Mr Thompson and Mr White. Everyone enjoys working with Mr Thompson, but that is not the case with Mr White.
Mr Thompson is always kind. When he wants something done, he’ll ask, "Would you mind getting this information for me, please" But Mr White usually shouts across the room, "Get me this information, and hurry up."
Mr White surprised us this morning, though. At first we thought he must be sick. He was kind and agreeable. "Miss Erickson," he asked, "if it isn’t too much trouble for you, could you please make these telephone calls for me" Right after that, Mr White said, "Miss Reed, would you be so kind as to open the window It’s quite warm in here." Then he talked to me, "I’d be thankful if you’d mail these letters for me."
We couldn’t imagine why he was behaving (表现) so strangely. Should we send him to a doctor Or had Mr White just changed Then we found the answer when Mr Thompson said, "Ladies, I’ve been told that the chairman of the company will be here soon. He’s very interested in the welfare of his secretaries and will have some questions to ask you about your working conditions (工作条件) here.\
Mr White surprised the people in the office when he