Humans are unique in the extent to which they can reflect on themselves and others. Humans are able to (1) , to think in abstract terms, to reflect on the future. A meaningless, (2) world is an insecure world. We do not like extensive insecurity. When it (3) to human behavior we infer meaning and (4) to make the behavior understandable. What all this means is that people develop "quasi theories" of human behavior, that is, theories that are not developed in an objective, scientific (5) . When doing so, people believe they know (6) humans do the things they do.
Let’s consider an example. In the United States people have been (7) with the increasing amount of crime for several years. The extent of crime bothers us; we ourselves could be (8) But what also bothers us is that people behave in such ways. Why can such things happen We develop quasi theories. We (9) concerned about the high crime rate, but we now believe we (10) it: our criminal justice system is (11) ; people have grown selfish and inconsiderate as our moral values (12) from the influence of liberal ideas; too many people are (13) drugs. These explanations suggest possible solutions. (14) the courts; put more people in jail as (15) to other lawbreakers. There is hope that the problem of crime can be solved if only we (16) these solutions. Again, the world is no longer meaningless nor (17) so threatening.
These quasi theories (18) serve a very important function for us. But how accurate are they How (19) will the suggested solutions be These questions must be answered (20) how people normally go about developing or attaining their quasi theories of human behavior.

1（）

A．understand
B．reason
C．meditate
D．reckon