You may wonder how the expert on fossil remains is able to trace descent through teeth, which seem （） pegs upon which to hang whole ancestries.

A．avaricious: greed
B． insightful: hope
C． modest: dignity
D． skeptical : trustfulness
E． pathetic : sympathy

A．flounce : turmoil
B．flourish : prosperity
C．provoke : discussion
D．adjust : balance
E． upset : equilibrium