立筋木龙骨的骨架由（）构成。
A、上槛
B、下槛
C、墙筋
D、斜撑
参考答案：A, B, C, D
孔子是我国古代伟大的教育家。他对教育作出的重要贡献之一是[ ]
A．主张“为政以德”
B．按出身贵贱招收门徒
C．主张“因材施教”
D．以《论语》作为教材
A poet and artist _____ coming to speak to us about Chinese literature and painting tomorrow afternoon. [ ]
A. is
B. are
C. was
D. were
