Australia is the world's _____ continent.

A．People do not analyze the problem they meet.
B．People often accept the opinions or ideas of other people.
C．People may learn from their past experience.
D．People can not solve some problems they meet.

A．Six Stages for Repairing Sam's Bicycle.
B．Possible Ways to Problem-solving.
C．Necessities of Problem Analysis.
D．Suggestions for Analyzing a Problem.