(1) Failure is a common thing in one’ s life.
(2) Success is what everyone expects.
(3) Failure is an important factor toward success.

A. the contradiction between economists and the business community
B. the present debate on economic growth
C. the advantages and disadvantages of economic growth
D. the importance of the debate on economic growth

A. When a child is two years old, he prefers to use both of his hands to grasp objects.
B. Scientists have given the reason for this tendency.
C. A monkey can use both of his hands equally well.
D. Those who prefer to use their left hands live a difficult life.