单项选择题
A.他今年因销售了一套新楼层而工作出色。 B.由于他今年销售作得好，所以被允许住进新房。 C.由于他今年出色的成就，他有了一套新住宅。 D.由于他今年的销售工作出色，老板奖励他一套新房。
A．they are friendly to everyone B．silence makes them uncomfortable C．they want to build intimate relationship with you D．they know much about weather