The local villager gave such a(n)______description that all the tourists felt as if they were right on the scene.

A．elegant

B．qualified

C．standard

D．vivid

下列关于表面活性剂的论述（）是错误的

A.能够显著降低两相间界面张力的物质

B.分子结构中含有亲水基团或亲油基团

C.低浓度时，发生表面吸附

D.高浓度时进入溶液内部