Scientists discover new water purification microbes

Scientists have unearthed a previously unknown species of microbes in the earth beneath us. Researchers at Michigan State University have been exploring an area just below and above the Earth's surface called the Critical Zone. This zone is essential to providing the conditions that sustain life. The researchers called the microbes CSP1-3. The microorganisms could be a key part of the process of purifying our water. Microbiologist James Tiedje said that while layers of soil are responsible for much of the filtration of rainwater, CSP1-3 are also indispensable. He said: "CSP1-3 are the scavengers cleaning up what got through the surface layer of soil." They have a job to do to purify our drinking water.

Dr Tiedje and his team focused on the microbes living in the deep soil, up to 200 metres beneath our feet. He said the CSP1-3 microbes remove harmful contaminants and detritus from the water supply. He now wants to cultivate CSP1-3 in his lab to find out more about their properties. He believes they could be utilized to clean up pollution in the soil. He said: "We don't know their capacities for metabolizing tough pollutants and, if we could learn that, we can help solve one of the Earth's most pressing problems." The scitechdaily.com website said: "Understanding this newly found group could boost conservation efforts and help address climate change."

TRUE / FALSE: Read the headline. Guess if 1-8 below are true (T) or false (F).

1. The new species of microbes are largely found in rain and waterfalls.     T / F

2. The researchers looked at an area called the Crucial Zone.     T / F

3. A researcher said the microbes could be a key part of water filtration.     T / F

4. The researcher called the microbes scavengers.     T / F

5. The microbes can be found 200 metres beneath our feet.     T / F

6. The researcher wants to grow the new microbes in his laboratory.     T / F

7. The researcher said the microbes could help our metabolism.     T / F

8. The researcher says the microbes will reverse climate change.     T / F

英语知识点

1. 新词汇和短语

• Unearthed: 发掘，揭露
  例句: "Scientists have unearthed a previously unknown species of microbes."
  这里的“unearthed”意思是“发现”或“发掘”，通常用于描述从地下或某些隐藏的地方找到了新的东西。

• Critical Zone: 关键区
  例句: "Researchers at Michigan State University have been exploring an area just below and above the Earth's surface called the Critical Zone."
  这里的“Critical Zone”指的是地球表面上下的重要区域，影响生命支持的环境条件。

• Indispensable: 不可或缺的
  例句: "CSP1-3 are also indispensable."
  "Indispensable"是一个常用的形容词，表示某物或某人是必须的，不能缺少的。

• Scavengers: 食腐动物，清道夫
  例句: "CSP1-3 are the scavengers cleaning up what got through the surface layer of soil."
  在这里，“scavengers”指的是一种清理或移除不需要物质的生物。

• Contaminants: 污染物
  例句: "The CSP1-3 microbes remove harmful contaminants and detritus from the water supply."
  “Contaminants”指的是污染的物质，通常影响水质或环境。

• Metabolizing: 新陈代谢
  例句: "We don't know their capacities for metabolizing tough pollutants."
  "Metabolizing"是生物体内转化食物和其他物质的过程。

• Detritus: 残骸，废料
  例句: "The CSP1-3 microbes remove harmful contaminants and detritus from the water supply."
  “Detritus”指的是自然环境中逐渐分解或被废弃的物质。

• Pressing problems: 紧迫的问题
  例句: "We can help solve one of the Earth's most pressing problems."
  这里的“pressing problems”表示紧急且重要的问题。

• Boost: 促进，增强
  例句: "Understanding this newly found group could boost conservation efforts."
  “Boost”表示增强或提高某事物的效果。

2. 语法结构

• 非限定性定语从句
  例句: "Scientists have unearthed a previously unknown species of microbes in the earth beneath us."
  这句话中，"a previously unknown species of microbes" 是名词短语，后面的 "in the earth beneath us" 是非限定性定语从句，修饰这个名词短语。

• 定语从句的引导词
  例句: "The researchers called the microbes CSP1-3."
  在这个句子中，“the researchers called the microbes CSP1-3”是主句，描述科学家如何命名这些微生物。

• 情态动词+动词原形
  例句: "He believes they could be utilized to clean up pollution in the soil."
  “could be utilized”中的"could"是情态动词，用来表达一种可能性或能力。

3. 句型结构

• 转折句型
  例句: "He said: 'CSP1-3 are the scavengers cleaning up what got through the surface layer of soil.'"
  这种句型常用于引用他说的话，或者表示某人对某事的看法。

• 复合句
  例句: "Dr Tiedje and his team focused on the microbes living in the deep soil, up to 200 metres beneath our feet."
  这句话是一个复合句，包含了多个信息，通过逗号连接。

4. 理解文章中的隐含含义

• 科学报告式的语言
  这篇新闻报告使用了专业且正式的语言，涉及科学探索、技术研究以及环境保护等主题，读者可以从中学习到如何用英语表达复杂的科学发现。

• 动词时态
  文章中使用了过去式（如“have unearthed”，“said”）来描述已经发生的发现，也使用了现在时（如“are indispensable”，“could boost”）来表达普遍的事实或可能的结果。

5. 如何用英语表达观点或引用

在新闻报道中，记者或科学家经常引用别人的观点。比如，“Dr Tiedje said: ‘...’”这句话中的引号部分是直接引用某人的话。理解和学习如何引用他人观点，对提高语言表达非常有帮助。

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通过这篇新闻文章，学生不仅能够扩展词汇量，还能学习到如何在科学报告中使用正式和专业的语言。理解其中的语法结构，如非限定性定语从句、定语从句和情态动词等，也能够帮助学生提高英语阅读理解和写作能力。