The basis of this consensus is a belief that improved relations with the U. S. would serve Iranian interests on a variety of fronts, including Iraq, Afghanistan, oil production, foreign investment and Iran’s nuclear energy program.（）

A．agreement reached by a group as a whole

B．opinion accepted by the majority

C．view held by the minority

D．perspective ignored by most people

当管理者要求雇员完成一项任务，他是在用（）沟通。

A.上行

B.横向

C.非正式

D.正式