Lucia felt lonely at home in the countryside ________ a few friends visiting her on Sundays occa- sionally.

A．certain gestures can be used as proof to judge whether a speaker is lying or not
B．politicians and businessmen lie more often than ordinary people
C．some gestures are proofs of lying only if they occur frequent
D．there is no simple way to judge if people tell lies or not

A．are more skilled at telling less serious lies than men
B．tell more lies than men
C．tend to flatter people more often than men do
D．are better at telling lies at parties than men do