[单项选择]

Text 3
To walk among me stars has been a dream of human kind since the beginning of time, wandering among the heavens that inspire legends and fantasies across the ages. Today, that dream has become a reality, a memory of some of the greatest human achievements in history: walking on the moon, sending probes to distant planets and discovering the secrets behind the mysteries of the cosmos. In the middle of the twentieth century, however, humans were at the halfway point between viewing space travel as a dream and as a reality. To them it was a goal rather than a memory, and the two main forces working toward that goal were the world’s two superpowers, the Soviet Union and the United States.
Both of the great nations, on the advent of incredibly efficient rocket thrusters capable of propelling manmade objects into space, strove to achieve the victory of finding a place among the stars and securing the considerable international prestige associated with
A. continue to stress the idea that what was previously thought impossible is now being achieved
B. indicate the next great achievement to be accomplished in the space program
C. demonstrate that the "Space Race" is now a cooperative effort between nations
D. convince the reader that the "space program is producing positive results