【单选题】There were seven ______ Negroes working on the farm.
【单选题】在半导体器件的发展过程中,下列最晚发明的器件是:
【单选题】There were seven people in the car, ______ a pile of luggage and four dogs.
【单选题】幼儿园教师对本班工作全面负责,下列哪项属于幼儿园教师的职责?( )
C.
负责本班房舍、设备、环境的清洁卫生和消毒工作
D.
结合本班幼儿的发展水平和兴趣需要,制订和执行教育工作计划
【单选题】There were seven people lived in their house, so he played soccer ______.