[单项选择]Most people would agree that, although our age exceeds all previous ages in knowledge, there has been no corresponding increase in wisdom. But agreement ceases as soon as we attempt to define "wisdom" and consider means of promoting it. There are several factors that contribute to wisdom. Of these I should put first a sense of proportion: the capacity to take account of all the important factors in a problem and to attach to each its due weight.
This has become more difficult than it used to be owing to the extent and complexity of the special knowledge required of various kinds of technicians. Suppose, for example, that you are engaged in research in scientific medicine. The work is difficult and is likely to absorb the whole of your mind. You have no time to consider the effect which your discoveries or inventions may have outside the field of medicine. You succeed (let us say) as
modern medicine has succeeded, in enormously lowering the infant death-rate, not only in Europe
A. carefully consider the bad effects of any kind of research work
B. give each important problem some careful consideration
C. acquire a great deal of complex and special knowledge
D. give suitable consideration to all the possible elements in a problem