-____________________

-They're under the chair.[ ]

A. Where is your baseball?

B. Where are your baseball?

C. Where are your keys?

D. Where is your keys?

当岩石表面为亲水时，水在毛管力作用下进入岩心，驱出了岩心中的油，这一过程为（）

A.驱替过程

B.吸吮过程

C.吸附过程