I 阅读理解（共两节，满分20 分）
第一节（共15 小题；每小题1 分，满分15 分）
阅读下列短文，从每题所给的四个选项中，选出最佳选项，并在答题卡上将该项涂黑。
A
A telescope (望远镜), called Gaia, is being designed by astronomers in Europe, and it
couldn’t be more different from Pan-STARRS, which is another telescope being designed. While
Pan-STARRS will be looking for asteroids (小行星) and comets headed for Earth, Gaia will be
looking at our entire galaxy (银河系).
