题目选项分析

A new telescope scheduled for completion in 2012 is greatly anticipated by astronomy enthusiasts because engineers claim that the machine will allow the night sky to be more clearly observed than ever before and that stargazers using the telescope will be able to see constellations that cannot presently be observed- almost perfectly.

A new telescope scheduled for completion in 2012 is greatly anticipated by astronomy enthusiasts because engineers claim that the machine will allow the night sky to be clearly observed more than ever before so stargazers using the telescope will be able to see constellations that cannot presently be observed- almost perfectly.