单选题 The sentence "Effective teamwork knows no level." means ______.

A、 leaders and team members are equal in a team
B、 effective teamwork is both important to leaders and team members in a team
C、 effective team may be set up among top executives and lower level managers
D、 the presence of teamwork will limit organization effectiveness and kill an organization

【正确答案】 B

【答案解析】[精解] 理解题。"Effective teamwork knows no level．"意思是：机构中各个层面都需要有效的合作。[B]一个高效团队对领导和团队成员来说都是重要的。因此[B]为正确答案。