弹性软骨含大量弹性纤维,分布于耳廓、会厌以及耻骨联合等处,有较强的弹性。
参考答案:错
Seeing an old man get on the crowded bus, Li Hong stood up at once and ______ her seat to him.
A.took
B.borrowed
C.offered
D.Lent
维生素D缺乏性手足搐搦症的主要表现是
A.惊厥
B.昏迷
C.手足徐动
D.前囟张力增高
E.肌阵挛