Question

5．We might not be alone in the universe．Actually，it may be confirmed as a very crowded place by new computer models developed to help identify habitable planets．
Estimates of places where life can exist have been based on the possibility of them having surface water．But software recently developed by the Aberdeen University allows researchers to identify planets with underground water kept liquid by heat from planets．
Water is fundamental for life and planets too close to the sun lose water to the atmosphere through evaporation．On the other hand，planets located in distant reaches from their star have their surface water locked away as ice．
Sean McMahon，who is carrying out the work，explained："Traditionally people have said that if a planet is in this Goldilocks zone-not too hot and not too cold-then it can have liquid water on its surface and be habitable．"
But this concept might change when considering that planets can receive two sources of heat-heat direct from the star and heat generated deep inside the planet．
It is easy to observe it in our own planet．As you go down through the crust  of the Earth，the temperature gets higher and higher．Even when the surface is frozen，water can exist below ground．
There could be immense quantities of water in fact-full of primitive life．
Professor John Parnell，also from Aberdeen University said："There is a significant habitat for microorganisms below the surface of the Earth，extending down several kilometers"．
"And some believe that the majority of life on Earth could even reside in this deep biosphere．"
So the Aberdeen team are developing models to predict which distant planets might harbor underground reservoirs of liquid water with the possibility of alien life．
28．What is considered as the symbol of life existence traditionally？D
A．Solid water on its surface．
B．Solid water below ground．
C．Liquid water below ground．
D．Liquid water on its surface．
29．Why did John Parnell mention the fact about Earth？B
A．To prove that there is majority of life on Earth．
B．To prove that life may also exist in other planets．
C．To prove that there is primitive life down through Earth．
D．To prove that there is a habitat for microorganisms below Earth．
30．What theory is the Aberdeen team's study based on？D
A．Planets can lose water through evaporation．
B．Planets can receive heat direct from the star．
C．Planets can have their surface water locked away as ice．
D．Planets can receive heat generated deep inside the planet．
31．What can we know about the computer models？A
A．They will help identify planets where there is life．
B．They will help researchers find Goldilocks zones．
C．They have helped find some significant discoveries．
D．They have already located some habitats for life．

Answer 1

分析 本文章主要報道雖然到目前為止地球是唯一公認(rèn)的存在生命的星球，但科學(xué)研究等顯示其它生命體也有存在的可能．

解答 28．D 細(xì)節(jié)題：根據(jù)Water is fundamental for life and planets too close to the sun lose water to the atmosphere through evaporation．在星球表面有水和大氣的籠罩是生命體存在的基本要素，結(jié)合選項，故選D．
29．B 細(xì)節(jié)題：根據(jù)Professor John Parnell，also from Aberdeen University said："There is a significant habitat for microorganisms below the surface of the Earth，extending down several kilometres"．"And some believe that the majority of life on Earth could even reside in this deep biosphere．"可知John Parnel提到地球的這個事實是為了證明在其他星球可能會存在生命．故選B．
30．D 細(xì)節(jié)題：根據(jù)But this concept might change when considering that planets can receive two sources of heat-heat direct from the star and heat generated deep inside the planet．星體可以接收二種形式的熱量．一種是來自星星的熱量另一種是星球內(nèi)部產(chǎn)生的熱能．而Aberdeen團隊就是以此理論為研究基礎(chǔ)的，結(jié)合選項，故選D．
31．A 推理題：根據(jù)We might not be alone in the universe．Actually，it may be confirmed as a very crowded place by new computer models developed to help identify habitable planets新的電腦模型可以幫助鑒定，某一星球上是否存在生命體，結(jié)合選項，故選A．

點評 本文是一個科教類閱讀理解，題目涉及多道細(xì)節(jié)理解題，做題時結(jié)合原文和題目有針對性的找出相關(guān)語句進行仔細(xì)分析，結(jié)合選項選出正確答案．推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案，切忌胡亂猜測，一定要做到有理有據(jù)．