课时作业(十八) Developing ideas ＆ Writing（课时作业）-【学易优】2023-2024学年高中英语选择性必修第二册（外研版）

班级： 姓名： 学号： 课时作业（十八） Developing ideas Writing 【阅读理解 have all the necessities for life including water. energy sources,and the right chemical build-up. Questioning the existence of aliens is ◆Mars something that scientists have done for decades.In The Red Planet,the fourth from the Sun,is fact,most people do believe that aliens exist in some probably one of the most talked-about potential fashion.The main necessities for life are water and candidates for extraterrestrial(地球外的)life and even for human colonization.Despite some different some forms of energy source.Not surprisingly, voices,finding extraterrestrial life on Mars is really there are some planets,exoplanets and moons that a serious possibility.We know by now that we fit the bill.Here are several best chances at finding won't find little green men or any intelligent form life in the universe. of life that we understand.However,there is ◆TRAPPIST-I evidence that there was and may still be microscopic TRAPPIST-1 is a planetary system a few life on the red planet. dozen light years away,whose discovery was1.The common point of these celestial bodies announced in early 2017.This system consists of 体)is that seven earth-like exoplanets orbiting an "ultra-cool" A.solid water exists on them respectively star,and it is one of our shots at finding possible B.life might exist on each of them life beyond our own solar system. C.they all contain liquid water ◆Titan D.each of them has living things on it Titan is the largest moon of Saturn.the sixth2.Which celestial body could have life different planet from our Sun.This moon could potentially from human imagination? A.TRAPPIST-1. B.Titan. harbor life but possibly not in the sense that we C.Europa. D.Mars. think.Titan does not exactly fit the description of 3.What do we know from the passage? being in a typical habitable zone.Titan has water, A.Europa is the most talked-about potential and it has liquid.It just doesn't have liquid water. candidate for extraterrestrial l