Which of the following can be inferred about the expanding universe?

参考解析：

推理判断题。根据第一段前四句“The discovery that the universe is expanding was one of the great intellectual revolutions of the twentieth century. With hindsight (回过头看), it is easy to wonder why no one had thought of it before. Newton, and others, should have realized that a static (静止的) universe would soon start to shrink under the influence of gravity. But suppose instead the universe is expanding”可知，宇宙正在膨胀的发现是二十世纪最伟大的智力革命之一。事后看来，人们很容易想知道为什么以前没有人想到过这一点。牛顿和其他人应该意识到，在引力的影响下，静止的宇宙很快就会开始收缩。但是假设宇宙正在膨胀。由此判断出，宇宙膨胀理论与十九世纪广泛认可的理论不同。故选A。