儿童呛咳的主要原因是
A.支气管淋巴结肿大
B.肺结核
C.支气管肺癌
D.肺气肿
E.异物吸收
参考答案:A,E
能防止脊柱过度后伸的韧带是()
A.项韧带
B.棘上韧带
C.棘间韧带
D.前纵韧带
E.黄韧带
---I’m fed up with studying.
---What nonsense! You’ve only got one year more to do. Then you’ll have your qualification and after that _____________
A.content is better than riches
B.it is not your cup of tea
C.the world is your oyster
D.well begun is half done