C
Today, our teacher shared a wonderful lesson about the great changes of Earth, especially the Yellow River and the great transformation(转变) of land and sea. She told us that 540 million years ago, China’s land was just a group of islands in the sea, no land lives at all. Then plate(板块) movements brought about huge changes: the islands became a peninsula(半岛), and even the supercontinent Pangaea(盘古大陆) appeared.
The Yellow River has an amazing story. 200,000 years ago, it was just a young river ending in big lakes. Later, a lake broke through, and the river ran into the sea.
Not only did the Yellow River, but many ancient big lakes shrank(收缩) too—one even became the small Taihu Lake today. That’s the true meaning of “the sea turning into mulberry(桑树) fields”.
Our teacher also said rivers are the mothers of civilizations(文明). The Yellow River feeds Chinese civilization. But some places were full of sandy soil, and sandstorms came often, and there was a shortage of water and good soil. Luckily, our government has taken action: it has planted bushes with strong roots to hold the soil, and has supported high-tech farming to grow more corn on farmland. All these efforts make our land better.
In conclusion, Earth changes greatly over time. Small actions can make a big difference to our planet.
()46.(跨学科·地理)What can make the land and sea change greatly according to Paragraph 1?
A. Land lives.
B. Sandstorms.
C. Earth’s moving around the sun.
D. Plate movements.
()47. What has the government done to protect the soil?
A. It has built more highways and railways.
B. It has planted bushes with strong roots.
C. It has built irrigation systems(灌溉系统).
D. It has made more man-made lakes.
()48.(新考法·情境匹配)Which Chinese saying can best describe the changes of Earth?
A. 沧海桑田
B. 日新月异
C. 瞬息万变
D. 物是人非
()49. What’s the structure of the passage? (Paragraph 1=①...)
A. ①/②③/④/⑤
B. ①/②/③/④⑤
C. ①②/③④/⑤
D. ①②③/④/⑤

46. D 47. B 48. A 49. A

【分析】
需针对每道题的题干，定位原文对应内容，结合细节、俗语含义、段落大意逐一分析选项：46题定位第一段找海陆变化的原因；47题定位第四段找政府保护土壤的措施；48题结合文中表述匹配对应俗语；49题梳理各段核心内容划分文章结构。
【解析】
46题：根据第一段关键句“Then plate(板块) movements brought about huge changes”，可知板块运动是海陆巨变的原因，对应选项D。
47题：根据第四段关键句“it has planted bushes with strong roots to hold the soil”，可知政府通过种植根系发达的灌木保护土壤，对应选项B。
48题：文中提到“the true meaning of “the sea turning into mulberry(桑树) fields”，意为“大海变为桑田”，对应中国俗语“沧海桑田”，即选项A。
49题：梳理段落结构：①段介绍地球海陆变化的原因；②③段讲述黄河及古湖泊的变化；④段说明政府保护土地的措施；⑤段总结全文，结构为①/②③/④/⑤，对应选项A。
【答案】
46.D 47.B 48.A 49.A
【知识点】
阅读理解、跨学科地理、俗语理解
【点评】
本题为英语阅读理解题，结合地理知识考查细节查找、俗语匹配及文章结构分析，需学生精准定位原文信息、理解段落逻辑，整体难度适中。
【难度系数】
0.6