Thoracic vertebrae：（）.

A．have transverse foramen

B．have costal fovea on the vertebral body laterally

C．the articular facets are relatively sagittal

D．the end of the spinous process bifurcated

E．the vertebral foramen is larger and triangular

（）是一种天然腐殖质土，呈微酸性，即收集林下表层土壤，经过筛后使用。

A.园土

B.厩肥土

C.山泥

D.腐叶土