_____ a mobile phone can you ring _____ you want to talk with anywhere. [ ]

A. Using; whoever　

B. Only on; whomever

C. By; whatever

D. With; anyone

在潭坑、池塘、水沟、洼地等水下出现（）时，可根据具体情况，采用以下方法。

A.流土

B.强渗

C.管涌

D.渗水