【单选题】

The evolutionary process culminating in man was finally completed about 35,000 years ago with the appearance of Homo Sapiens, or "thinking man." (1) in broadest perspective, this represents the second major turning (2) in the course of (3) on this planet. The first occurred when life (4) out of inorganic matter.After that momentous (5) , all living forms evolved by adapting (6) their environment, as was evident during the climate turmoil of the Pleistocene.But with the (7) of man, the evolutionary process was (8) . No longer did genes adapt to environment. Instead, man adapted by changing the environment to (9) his genes. Today, a third (10) turning point appears (11) , as man’s growing knowledge of the structure and function of genes may soon enable him to (12) his genes as well as his environment.

Man, and only man, has been able to create a made-to-order environment, or culture, as it is calleD、The reason is (13) only man can symbolize, or (14) things and concepts divorced from here-and-now reality. Only he laughs, and only he knows that he will die. Only he has wondered (15) the universe and its origins, about his place in it and in the hereafter.
With these unique and revolutionizing abilities, man has been able to (16) with his environment without alteration. His culture in the new no biological way of having fur in theArctic, water storage in the desert, and fins in the water. More concretely, culture (17) tools, clothing, ornaments, institutions, language, art forms, and religious beliefs and (18) .All these have served to adapt man to his physical environment and to his fellowman. Indeed, story of man is simply the story of a (19) of cultures that he has created, form his Paleolithic (20) to the present day.
A．originated
B．evolved
C．developed
D．grew