The doctor is skilled at treating heart trouble and never accepts any gift from his patients,so he has a very good_____.
A:expectation
B:reputation
C:contribution
D:civilization
Only ________ of the students come to school by bus.
在一定地域内,____与____所形成的统一的整体叫做生态系统.
《茅屋为秋风所破歌》这首诗从体裁上说属于____诗。作者杜甫,字子美,祖籍襄阳,出生于河南巩县,一度在长安南少陵附近居住,曾自称____,后世称其为“杜少陵”,安史之乱后入蜀,一度挂着检校工部员外郎的官衔,因此后人又称他为____。他是我国唐代伟大的____主义诗人,当时人称____。其诗显示了唐帝国由盛转衰的历史过程,因此又被后人称为____。