佝偻病发病机制中下述哪项不正确()
A.甲状旁腺功能代偿性亢进
B.骨钙释出
C.肾小管对磷的重吸收增加
D.局部骨样组织堆积
E.碱性磷酸酶分泌增加
参考答案:C
将下列山地部位(山脊、山谷、鞍部)描图与相应的等高线图用直线连起来
—Is there a sports meeting in your school?
—Yes. It ______ in November every year.
A.holds
B.held
C.will be held
D.is held