充分就业意味着失业率为零。
参考答案：错
They no longer have to ______ large numbers of temporary workers to do the harvesting.
A. take on B. hire on C. work on carry on
早晨咳嗽加剧，咳嗽连声，声重浊，痰出咳减者多为
A．虚寒B．痰湿C．肝火D．风热E．风寒
