专题18 必修三综合检测-2023年高考英语一轮复习基础知识+基本能力双清（译林版2020）

专题18 必修三综合检测-2023年高考英语一轮复习基础知识+基本能力双清（译林版2020） 第二部分 阅读理解(共两节，满分50分) 第一节(共15小题；每小题2.5分，满分37.5分) 阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。 A Even for a civilization as advanced as the Harappan, a second drought was perhaps one too many. The climate disaster may be what drove the ancient society to disappear step by. The Harappan started in the Indus valley around 5200 years ago, strongest around 2600 BC. Much about them is unknown. Yet archaeological remains tell the story of the people, skilled in trade and city planning, and particularly good at controlling water. Their huge cities, complete with excellent systems for underground water and public baths, existed long before the Roman Empire. But by 1900 BC, their society seemed to be on the fall, and by 1300 BC, the Harappan civilizations had broken down. Several ideas have been put forward to explain the downfall, including invasion and climate change. One recent study refers to a major drought in the northern half around 4200 years ago. This event was recently considered as the start of the Meghalayan period. It is thought to have broken up climate systems around the world, including the summer monsoon rainfall the Harappan depended on. Nick Scroxton at University College Dublin, Ireland, and his team are now challenging this idea after studying 10 ancient records. They found some facts of a sudden drought starting around 4260 years ago. The study suggests the Harappan faced a sharp decrease in winter rain. “The civilization suffered, that's for sure,” says Scroxton. But that wasn't the end of the Harappan. “Their politics might change, the crops might change, the location of their cities changes, but they adapt,” says Scroxton. Some 300 years later, however, just as the winter rains were starting to recover, a hottest drought kicked off. This was a slowing reduction in the sum monsoon rains over several centuries. Scroxton and his team say this second drought changed the Harappan into a poor society that disappeared at