单选题
Jackman believes that both business people and doctors ______.
A、
have to be good at management.
B、
should keep up to date with their field.
C、
need to select reading material carefully.
【正确答案】
B
【答案解析】
题干要求的是商务人士和医生都应该怎么样。只有B项，应该密切关注他们的领域，正确；A项是对business man而言；C项文中未提及。
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