题目

The coastal cities in South and Southeast Asia are sinking faster than elsewhere in the world, leaving tens of millions of people more vulnerable to rising sea levels, according to a new study.Rapid urbanization (城市化) has seen these cities draw heavily on groundwater to service their growing populations, according to the research. "This puts cities experiencing rapid local land sinking at greater risk of coastal hazards compared to those only experiencing climate-driven sea-level rise," the study says.Vietnam's most populous urban center and main business center, Ho Chi Minh City, was sinking annually at an average of 16.2 millimeters, the highest rate revealed in the study's survey of satellite data from 48 large coastal cities around the world. Some cities in South and Southeast Asia also saw sinking rates of more than 20 millimeters in peak years.According to the study, many of these rapidly sinking coastal cities are expanding into massive cities, where high demands for groundwater extraction (抽取) and loading from densely constructed building structures contribute to local land sinking.Land sinking could amplify the impacts of sea-level rise. Coupled with extreme rainfall and sea-level rise caused by climate change, land sinking will lead to more frequent, intense, and prolonged flooding. Sinking cities are not themselves a result of climate change, but researchers said their work would provide a better insight into how the phenomenon would exacerbate the effects of climate-driven average sea-level rise.In many previous studies of sea-level rise, sinking land was either ignored or was difficult to measure.What does the satellite data from 48 coastal cities around the world show?A Vietnam has by far the highest sea-level increase.B Vietnam is the most populous country in South East Asia.C Ho Chi Minh City has the highest annual land sinking rate.D Ho Chi Minh City is the most heavily populated city in Asia.

The coastal cities in South and Southeast Asia are sinking faster than elsewhere in the world, leaving tens of millions of people more vulnerable to rising sea levels, according to a new study. Rapid urbanization (城市化) has seen these cities draw heavily on groundwater to service their growing populations, according to the research. "This puts cities experiencing rapid local land sinking at greater risk of coastal hazards compared to those only experiencing climate-driven sea-level rise," the study says. Vietnam's most populous urban center and main business center, Ho Chi Minh City, was sinking annually at an average of 16.2 millimeters, the highest rate revealed in the study's survey of satellite data from 48 large coastal cities around the world. Some cities in South and Southeast Asia also saw sinking rates of more than 20 millimeters in peak years. According to the study, many of these rapidly sinking coastal cities are expanding into massive cities, where high demands for groundwater extraction (抽取) and loading from densely constructed building structures contribute to local land sinking. Land sinking could amplify the impacts of sea-level rise. Coupled with extreme rainfall and sea-level rise caused by climate change, land sinking will lead to more frequent, intense, and prolonged flooding. Sinking cities are not themselves a result of climate change, but researchers said their work would provide a better insight into how the phenomenon would exacerbate the effects of climate-driven average sea-level rise. In many previous studies of sea-level rise, sinking land was either ignored or was difficult to measure. What does the satellite data from 48 coastal cities around the world show? A Vietnam has by far the highest sea-level increase. B Vietnam is the most populous country in South East Asia. C Ho Chi Minh City has the highest annual land sinking rate. D Ho Chi Minh City is the most heavily populated city in Asia.

题目解答

答案

我们来逐步分析这道题。

题目原文回顾：

> What does the satellite data from 48 coastal cities around the world show?

意思是：来自全球48个沿海城市的卫星数据表明了什么？

原文相关段落：

> Vietnam's most populous urban center and main business center, Ho Chi Minh City, was sinking annually at an average of 16.2 millimeters, the highest rate revealed in the study's survey of satellite data from 48 large coastal cities around the world. Some cities in South and Southeast Asia also saw sinking rates of more than 20 millimeters in peak years.

翻译：
> 越南人口最多的城市和主要商业中心胡志明市，每年平均下沉16.2毫米，这是该研究对全球48个大型沿海城市卫星数据调查中揭示的最高下沉率。一些南亚和东南亚城市在高峰年份的下沉率甚至超过20毫米。

选项分析：

A. Vietnam has by far the highest sea-level increase.
错误。文章并没有说越南的海平面上升最快，而是说胡志明市的土地下沉最快。

B. Vietnam is the most populous country in South East Asia.
错误。虽然文章提到胡志明市是越南人口最多的城市，但并没有说越南是东南亚人口最多的国家。

C. Ho Chi Minh City has the highest annual land sinking rate.
正确。原文明确指出胡志明市是48个沿海城市中土地下沉率最高的城市，平均每年下沉16.2毫米。

D. Ho Chi Minh City is the most heavily populated city in Asia.
错误。文章只说胡志明市是越南人口最多的城市，但没有说它是整个亚洲人口最多的城市。

最终答案：

$\boxed{C}$

解析

考查要点：本题主要考查学生根据文章内容准确提取关键信息的能力，需要结合问题定位原文相关段落，并排除干扰选项。

解题核心思路：

  1. 定位问题关键词：题目问的是“卫星数据从48个沿海城市显示了什么”，需找到文章中直接描述卫星数据分析结果的句子。
  2. 锁定关键数据：文章明确提到胡志明市的年土地沉降率是“最高”（highest rate），且数据来自对48个城市卫星数据的调查。
  3. 排除干扰项：需注意选项中可能混淆“海平面上升”与“土地沉降”两个概念，以及“城市”与“国家”范围的差异。

关键步骤解析：

  1. 理解问题：题目要求明确卫星数据的核心结论，需聚焦文章中对48个城市卫星数据的直接描述。
  2. 定位原文关键句：

    Vietnam's most populous urban center... Ho Chi Minh City, was sinking annually at an average of 16.2 millimeters, the highest rate revealed in the study's survey of satellite data from 48 large coastal cities around the world.
    关键信息：胡志明市的年沉降率是48个城市中最高。

  3. 分析选项：
    • A：错误。文章未提及越南海平面上升最快，而是土地沉降最快。
    • B：错误。文章仅说明胡志明市是越南人口最多的城市，未涉及国家人口排名。
    • C：正确。原文明确指出胡志明市年沉降率最高。
    • D：错误。文章未比较胡志明市与亚洲其他城市的总人口。