X线诊断原则为___________、__________、___________、_____________。
参考答案:全面观察、 具体分析、 结合临床、 作出诊断
在唐代提出“文章合为时而著,歌诗合为事而作”主张的是( )
A.王维
B.李白
C.白居易
D.韩愈
I think I was at school, ____I was staying with a friend during the vacation when I heard the news.
A.even so
B.and then
C.so that
D.or else