首页
登录
职称英语
One reason researchers have long believed that Mars never enjoyed an extensi
One reason researchers have long believed that Mars never enjoyed an extensi
游客
2025-02-19
46
管理
问题
One reason researchers have long believed that Mars never enjoyed an extensive period of warm and wet climate is that much of the surface not covered by wind-borne dust appear to be composed of unweathered material.
If water flowed for an extended period, researchers reasoned, it should have altered and weathered the volcanic minerals, creating clays or other oxidized, hydrated phases (minerals that incorporate water molecules in their crystal structure).
It turns out, though, that the scientists were not looking closely enough. New high-resolution mapping data and close-up surface studies have revealed clays and other hydrated minerals in many regions. The clay deposits are scattered all over, in ancient volcanic surfaces and heavily cratered highland regions, some of which have apparently been exposed by erosion only recently. [br] According to the passage, scientists are able to discover weathered material on the Martian surface because they have benefited from which of the following?
选项
A、A new method to analyze volcanic craters created on the Martian surface.
B、An improved ability to detect hydrated materials on the Martian surface
C、A more sophisticated understanding of the effect of wind-borne dust on the Martian surface
D、A decision to look for water primarily in heavily cratered highland regions.
E、A better understanding of how erosion might affect clay deposits.
答案
B
解析
根据第二段,科学家之所以又开始认为火星有水,是受益于新的技术使他们找到了水存在的证据,即黏土和其他水合物,因此选项B正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3964142.html
相关试题推荐
OnereasonresearchershavelongbelievedthatMarsneverenjoyedanextensi
EarlynaturalistsbelievedtwospeciesofbeaverlivedinNorthAmerica:dam
Recently,researchersinvestigatedtheforagingprofilesofbirdspeciesin
Recently,researchersinvestigatedtheforagingprofilesofbirdspeciesin
Recently,researchersinvestigatedtheforagingprofilesofbirdspeciesin
Readinghabits-Whataresomeofthereasonsthatpeopleread?-Whattypesof
Whydidyouchoosethisschool/college/university? There’reafewgoodreasons,
Whatdidyouenjoydoingasachild? WhenIwasachild,Ienjoyedhangingout
Whyaresomepeoplesokeenonfollowingfashions? Ithinkonereasonisthatt
Describeanindoorgameyouenjoyedplayinginyourchildhood.Youshouldsay:w
随机试题
【S1】[br]【S6】accompanying→accompanied用词不当。beaccompaniedby固定搭配,表示“附有,伴随”。
TheMagicPowerofPoliteWordsForthispart,youareallowed30minutestowri
产生生物电的跨膜离子移动属于()。A.单纯扩散 B.载体中介的易化扩散
在《美育书简》中提出艺术起源“游戏说”的是()。A.席勒 B.亚里士多德 C
A.高血压 B.高血脂 C.高热 D.尿多、尿相对密度高 E.尿糖阳性糖
L-J质控图中,失控线为A.±SD B.±3SD C.±2SD D.±4S
共用题干 PlantsinDesertOnlyspecialplant
患者,男性,30岁,右股骨干骨折,骨牵引治疗。因活动不便,护士协助其床上洗发,对
利用利率上限(期权)可以防范利率上升的风险。()
下列关于个人取得境内上市公司授予的不可公开交易的股票期权个人所得税的处理,说法正
最新回复
(
0
)