主张“文章合为时而著,歌诗合为事而作”的中唐诗人是()。
A、白居易
B、李白
C、张若虚
D、张孝祥
参考答案:A
published fifty years ago, his work still attracts much attention at present. [ ]
A. As
B. Though
C. Apart from
D. Despite
由于操作不规范所引起的误差属于()
A、系统误差
B、随即误差
C、过失误差
D、方法误差