PDF《2019 年6月普通高等学校招生全国统一考试（浙江卷） 英语》

50 percent on more than 46,000 square miles of California forests, the new study finds. No area was spared or unaffected, from the foggy northern coast to the Sierra Nevada Mountains to the San Gabriels above Los Angeles. In the Sierra high country, the number of big trees has fallen by more than

55 percent;

in parts of southern California the decline was nearly

75 percent. Many factors contributed to the decline, said Patrick McIntyre, an ecologist who was the lead author of the study. Woodcutters targeted big trees. Housing development pushed into the woods. Aggressive wildfire control has left California forests crowded with small trees that compete with big trees for resources (资源). But in comparing a study of California forests done in the 1920s and 1930s with another one between

2001 and 2010, McIntyre and his colleagues documented a widespread death of big trees that was evident even in wildlands protected from woodcutting or development. The loss of big trees was greatest in areas where trees had suffered the greatest water shortage. The researchers figured out water stress with a computer model that calculated how much water trees were getting in comparison with how much they needed, taking into account such things as rainfall, air temperature , dampness of soil, and the timing of snowmelt (融雪). Since the 1930s, McIntyre said, the biggest factors driving up water stress in the state have been rising temperatures, which cause trees to lose more water to the air, and earlier snowmelt, which reduces the water supply available to trees during the dry season. 杭州新东方 优能中学部&

优能一对一部 高中英语组 联合出品 27. What is the second paragraph mainly about? A. The seriousness of big-tree loss in California. B. The increasing variety of California big trees. C. The distribution of big trees in California forests. D. The influence of farming on big trees in California. 【答案】A 段落主旨题 【解析】根据题干定位到原文第二段.该段总共三句话,第一句为总起句,指出了该研究的发现: The number of trees larger than two feet across has decline ,超过两英尺宽的大树数量在减少,其后 跟着的 by

50 percent 和 on more than 46,000 square miles of California forests 分别 说明了大树损失数量之多和范围之广;

第二句对于范围之广进行补充, No area was spared or unaffected ,没有地方幸免;

第三句通过一些具体数据对于数量之多进行补充.通过分析可知,第二段 主要讲述了加利福尼亚大树损失之惨重.故选 A. 28. Which of the following is well-intentioned but may be bad for big trees? A. Ecological studies of forests. B. Banning woodcutting. C. Limiting housing development. D. Fire control measures. 【答案】D 推理判断题 【解析】根据 be bad for big trees 定位到原文第三段.这一段分析了导致大树数量下降的原因,而题目 问的是出于好意的,但最终对大树不利的是哪一选项.根据 Aggressive wildfire control has left California forests crowded with small trees that compete with big trees for resources 可知,野火管控保护了小树,但却造成了小树与大树竞争资源的问题,因此,D 选项符合题意.故选 D. 29. What is a major cause of the water shortage according to McIntyre? A. Inadequate snowmelt. B. A longer dry season. C. A warmer climate. D. Dampness of the air. 【答案】C 细节理解题 【解析】根据 water shortage 和McIntyre 定位到原文最后一段. 根据 the biggest factors driving up water stress in the state have been rising temperatures, …., and earlier snowmelt, …… 杭州新东方 优能中学部&