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2012年职称英语理工B级阅读和完型填空

2012年职称英语理工类B级

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*第三+八篇 "Life Form Found" on Saturn's Titan

*第四十篇 Teaching Math, Teaching Anxiety

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*第十一篇 Climate Change Poses Major Risks for Unprepared Cities *第十二篇 Free Statins With Fast Food Could Neutralize Heart Risk

*第三+八篇 "Life Form Found" on Saturn's Titan 土卫六上发现了生命迹象

1 2Scientists say they have discovered hints of alien lifeon the Saturn's moon. The

discovery of a sort of life was announced after researchers at the US space

34agency,NASA,analyzed data from spacecraft Cassini,which pointed to,the existence of methane-based form of life on Saturn's biggest moon.

科学家们说,在土卫六上发现了外星生命迹象并宣布了这一发现。美国国家航空航天局(NASA)的研究者们对卡西尼号探测器所传回来的数据进行了分析,数据表明,土星卫星中最大的一颗卫星有以甲烷为基础的生命的存在迹象。

Scientists have reportedly discovered clues showing primitive alien beings are"breathing" in Titan's dense atmosphere filled with hydrogen.

据报道,科学家们已经找到了在土卫六高浓度氢气大气层里“呼吸”的原始外星生命的线索。 They argue that hydrogen gets absorbed before hitting Titan's planet-like surface covered

5with methane lakes and rivers. This,they say,points to the existence of some"bugs" consuming

the hydrogen at the surface of the moon less than half the size of the Earth.

他们认为,氢气在到达布满甲烷河流湖泊的土卫六类似行星一样的表层前就已经被吸收了。这就证明在这个不及半个地球大小的卫星表面有某种微生物在依靠氢气生存。

"We suggested hydrogen consumption because it's the obvious gas for life to consume on Titan,similar to the way we consume oxygen on Earth,"says NASA scientist Chris McKay."If these signs do turn out to be a sign of life,it would be doubly exciting because it would represent a second form of life independent from water-based life on Earth."

美国国家航空航天局的科学家Chris Mckay说,“我们提出有氢气的消耗,是由于它是土卫六上生命赖以生存的显而易见的气体,就像我们地球上用氧气呼吸一样。如果这些迹象最终证明是生命的迹象,它会加倍令人兴奋,因为它会代表完全不同于地球上水基生命的第二种生命。”

To date,scientists have not yet detected this form of life anywhere,though there are liquid-water-based microorganisms on Earth that grow well on methane or produce it as a waste

6product. On Titan, where temperatures are around 90 Kelvin(minus 290 degrees Farenheit),a

methanebased organism would have to use a substance that is liquid as its medium for living

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