______the bones under the sand，the scientists concluded that they came from the dinosaurs about 65 million years ago．

A．Being inspected

B．Inspected

C．Having inspected

D．To inspect

要素膳的特点不包括（）

A.营养全面

B.易于消化

C.无残渣

D.使用方便

E.由肉类、蔬菜加工而成