Step by Step 3000 第2册 Unit11:Space(4)

 　　Part 4. Language study and language appreciation¹.

　　Listen to the following statements you have learned in the previous and present units.

　　Pay special attention to the parts in bold part. Learn to appreciate and use the language.

　　1. to reduce the spread of virus/ a disease.

　　Health experts say washing you hands reduces the spread of virus and other organisms that cause disease.

　　Experts say hand washing is the simplest and most effective way to reduce the spread of infectious diseases.

　　2. to be blamed on.

　　In addition, millions of food poisoning cases each year are blamed on people who prepare food who do not wash their hands.

　　The spread of infections often is blamed on health workers who do not wash their hands after treating patients.

　　3. a reminder² of...

　　So I think this should be a reminder of how large the role of prevention can be for reducing cancer deaths.

　　4. to act as a clearing house for...

　　Doctor Rifkin told ABC news that America's Doctor Online acts as a clearing house for the hundreds of thousands of responses, a web browser³ might turn up in answer to a question.

　　5. To be bathed in...

　　The observatory⁴ changed the astronomers⁵' views of the heavens, after showing that the entire universe is bathed in the invisible gamma rays, but highest energy form of light.

1 appreciation   

n.评价；欣赏；感谢；领会，理解；价格上涨

参考例句：

• I would like to express my appreciation and thanks to you all.我想对你们所有人表达我的感激和谢意。
• I'll be sending them a donation in appreciation of their help.我将送给他们一笔捐款以感谢他们的帮助。

2 reminder   

n.提醒物，纪念品；暗示，提示

参考例句：

• I have had another reminder from the library.我又收到图书馆的催还单。
• It always took a final reminder to get her to pay her share of the rent.总是得发给她一份最后催缴通知，她才付应该交的房租。

3 browser   

n.浏览者

参考例句：

• View edits in a web browser.在浏览器中看编辑的效果。
• I think my browser has a list of shareware links.我想在浏览器中会有一系列的共享软件链接。

4 observatory   

n.天文台，气象台，瞭望台，观测台

参考例句：

• Guy's house was close to the observatory.盖伊的房子离天文台很近。
• Officials from Greenwich Observatory have the clock checked twice a day.格林威治天文台的职员们每天对大钟检查两次。

5 astronomers   

n.天文学者，天文学家( astronomer的名词复数 )

参考例句：

• Astronomers can accurately foretell the date,time,and length of future eclipses. 天文学家能精确地预告未来日食月食的日期、时刻和时长。 来自《简明英汉词典》
• Astronomers used to ask why only Saturn has rings. 天文学家们过去一直感到奇怪，为什么只有土星有光环。 来自《简明英汉词典》