题目选项分析

The Great Wall Space Agency's recent attempts to launch a man into space, a major goal of their space program for the past few years, have not substantially decreased the gap that exists between the technology rich and technology poor cities around the space center.

The Great Wall Space Agency's recent attempts to launch a man into space, a major goal of their space program for the past few years, has not substantially decreased the gaps existing between the technology rich and technology poor cities around the space center.