Astronomy has been a source for myriad
ideas influencing every subject. The stars have{{U}} (67) {{/U}}since
the dawn of man. People have looked to the{{U}} (68) {{/U}}to determine
physical location in the Earth, to{{U}} (69) {{/U}}time and to gain
spiritual direction. In early{{U}} (70) {{/U}}of the Earth, humans had
only their five senses to{{U}} (71) {{/U}}them. Venturing out at sea
would have been impossible if people had not realized that the stars stay{{U}}
(72) {{/U}}constant in position. Following the stars allowed mankind
to{{U}} (73) {{/U}}the first system for giving direction. An adventurer
could determine what direction they were facing and get a (n){{U}} (74)
{{/U}}idea about how far they had to go. Since the beginning, the stars have
been used not only{{U}} (75) {{/U}}an effective tool for people to{{U}}
(76) {{/U}}in basic living but also to{{U}} (77)
{{/U}}undiscovered things about the world. The 17th Century was filled{{U}}
(78) {{/U}}many discoveries both in astronomy and in mathematics. The
astronomers'{{U}} (79) {{/U}}of the universe throughout the 17th Century
was referred to as the Ptolemaic system. They presumed that all things around
the earth were unchanging. Another popular{{U}} (80) {{/U}}was the
Copernican system. This is where the sun is the center rather than the earth.
One of the main scientists during the 17th Century was Galileo. He believed{{U}}
(81) {{/U}}the Copernican system. When Galileo pointed his telescope
to the sky, he{{U}} (82) {{/U}}many important scientific discoveries
that{{U}} (83) {{/U}}the Copernican system. He found that the moon was
not a{{U}} (84) {{/U}}sphere as thought of in the Ptolemaic system; it
had craters and mountains not{{U}} (85) {{/U}}to the human eye. He also
discovered that the sun had spots. These discoveries all{{U}} (86)
{{/U}}the Ptolemaic system.
【答案解析】语义衔接题。mankind和the first system for giving direction之间的关系应该是develop,以前没有新发展出来的应该用develop,选B)。这句的意思是“沿着星星的位置使得人类发展出第一个确定方位的系统”。 discover“发现”,其前提是事先已经存在的;operate“运转”;crash“碰撞”这几个词与句意均不符,排除。