There’re more than 100 elements found in nature, ______  are metals.

A．most of which

B．most of them

C．most of that

D．most which

骨折早期并发症不包括（）。

A.脂肪栓塞综合征

B.休克

C.脊髓损伤

D.急性骨萎缩

E.神经损伤