.The Maori ________ in New Zealand for about 1,000 years, but their present lifestyle and culture differ little from _________ of their ancestors.

A．have lived; that

B．had been living; ones

C．have been living; those

D．have been living; the one

有关脊柱结核好发的原因，哪项不正确（）

A.负重量大

B.活动多

C.松质骨多

D.血运丰富

E.脊椎数量多