A poet and artist ______ coming to speak to us about Chinese literature and painting tomorrow afternoon.

A．is

B．are

C．was

D．Were

下列地区中，人口稠密的是[ ]

A、极端干旱的沙漠地区

B、终年严寒的高纬地区

C、气候湿热的雨林地区

D、温暖湿润的平原地区