A．The man.
B．The woman.
C．They pay for their own dinner respectively.
D．Someone else.

A．they tend to look into a situation from all different angles to work out a solution
B．they try to attack their problem in every possible way on the basis of the assumption that there must be a solution to the problem
C．they believe there is a solution to every problem and will examine the problem in different ways
D．they think careful and logical analysis is indispensable to the solution of a complicated problem