首页
登录
职称英语
The surface of Venus contains calcite, a mineral that absorbs the gas sulfur
The surface of Venus contains calcite, a mineral that absorbs the gas sulfur
游客
2024-01-10
55
管理
问题
The surface of Venus contains calcite, a mineral that absorbs the gas sulfur dioxide. Sulfur dioxide is often produced by volcanic activity and is plentiful in Venus’ atmosphere, so there must be a source, perhaps volcanic, producing sulfur dioxide on Venus.
Which of the following is an assumption on which the argument depends?
选项
A、In the recent past, the level of sulfur dioxide in Venus’ atmosphere was not much higher than it is now.
B、If there is volcanic activity on the surface of Venus, it is not adequate to maintain the observed amount of sulfur dioxide in the atmosphere.
C、The sulfur dioxide in Venus’ atmosphere forms clouds that prevent direct observation of the surface.
D、Sulfur dioxide produced by volcanic activity on the Earth’s surface is also absorbed by minerals other than calcite.
E、The calcite on the surface of Venus is in sufficient supply to continue to absorb sulfur for millions of years to come.
答案
A
解析
选项取反。在过去,金星二氧化硫的水平远远高于现在。这说明现在二氧化硫少了,这在一定程度上削弱了火山是二氧化硫的来源这一论证,削弱原文。A正确。B项本身就在削弱原文,不选。C项本文讨论的是二氧化硫的来源,与观察是否容易无关,不选。D项本文讨论的是金星,和地球无关,不选。E项本文讨论的是现状,即明明金星表面有方解石吸收二氧化硫,可是金星大气层中依然有二氧化硫,与未来无关。不选。
转载请注明原文地址:https://tihaiku.com/zcyy/3349278.html
相关试题推荐
Forcenturies,sailorshavereportedseeingthesurfaceoftheoceanglowingwit
Infrigidregionsalayerofpermafrostunderthesoilsurfacepreventswaterfr
Representingaroundworldonaflatsurfaceisimpossiblewithoutsome______:t
Intheabsenceofasurfacegradient,thenewlawsofrefractionandreflection
InJapaneseaesthetics,especiallybutnotonlyinNoh,beautycontainstheidea
Theskinofthepoisondartfrogcontainsdeadlypoisonscalledbatrachotoxins.
Whataccountsforthelow-lying,flatsurfaceofMars’snorth?OnEarth’ssu
Whataccountsforthelow-lying,flatsurfaceofMars’snorth?OnEarth’ssu
Whataccountsforthelow-lying,flatsurfaceofMars’snorth?OnEarth’ssu
Climatologistsobservedin1964thataslowwarmingofthesurfaceoftheNo
随机试题
[originaltext]W:Oh,Steve,you’reearly!I’mhappyyou’rehereearlytodaybec
《金融科技发展规划(2019-2021年)》明确了未来三年金融科技工作的()
男性,44岁,因上腹部剧痛,伴休克10h入院。体格检查:巩膜轻度黄染,重度腹胀,
以下关于消火栓的叙述中,()是错误的。A.消防电梯前室应该设置室内消火栓
A.精神萎靡 B.肌肉松弛 C.肌张力增高 D.体重比正常小儿减轻15%~
患者,男性,70岁。因上消化道大出血入院。估计出血量约2000ml,给予快速输全
小王是一名销售人员,根据小王与公司签订的劳动合同,每月小王有3000元基本工资,
一人造地球卫星绕地球做匀速圆周运动.假如该卫星变轨后仍做匀速圆周运动,动能减小为
小蔡是新进入机构的社会工作者,机构安排老张作为小蔡的督导,在工作过程中老张很重视
最早来自麦考莱对债券平均到期期限的研究的概念是()。A:久期B:额度C:凸性
最新回复
(
0
)