28. According to the passage, what three components does the best speech combine?

　　A. Informing, delivering and entertaining.            B. Informing, persuading and entertaining.

　　C. Informing, writing and delivering.                  

　　D. Informing, writing and persuading.

　　D

　　Kepler 22b, a planet more like Earth than any yet discovered, has been identified as a potential future home for mankind.

　　Kepler 22b contains both land and water and has temperatures which average around 22℃. It also contains the right atmosphere to potentially support life.

　　It is, however, 600 light years from Earth. The planet, where a year lasts 290 days, was first spotted two years ago.

　　However, NASA scientists using the agency’s Kepler space telescope have now concluded that it offers the best hope yet for future human habitation outside the Solar System.

　　One of the key standards for a planet to be habitable is that it remains roughly the right distance from its main star to be neither too cold nor too hot.

　　This range of ideal temperatures is known to scientists as the “Goldilocks” zone, as the temperature is “just right” for life.

　　Bill Borucki, Kepler principal investigator at NASA Ames Research Centre, said: “We have now got good planet confirmation with Kepler 22b. We are certain that it is in the habitable zone and if it has a surface it ought to have a nice temperature.”

【2017届江苏省高三英语一轮复习训练：7】相关文章：

★ （全国通用）2014届高考英语一轮单元复习 限时强化训练二

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (13)

★ 2014届高考英语一轮复习课时作业(四十八)选修8Module 6《The Tang Poems》（外研版）

★ 安徽省淮南市2014高考英语一轮单项选择及文章训练（20）及答案

★ 【人教版】2014届高考英语一轮复习指导考点针对练：必修2 unit5《Music》

★ 2014届高考英语一轮复习选修8参考答案（外研版）

★ 【北京专用】2014届高考英语一轮复习方案课时作业：必修4 Unit 2 Working the land

★ 安徽省淮南市2014高考英语一轮单项选择及文章训练（18）及答案

★ 2014届高考英语一轮复习课时作业(三十六)选修6Module 6《War and Peace》（外研版）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ规范练：6（含解析）