首页
登录
职称英语
The creation of life requires a set of chemical elements for making the componen
The creation of life requires a set of chemical elements for making the componen
游客
2025-02-04
8
管理
问题
The creation of life requires a set of chemical elements for making the components of cells. Life Earth uses about
25 of the 92 naturally occurring chemical elements
, although just 4 of these element oxygen, carbon, hydrogen, and nitrogen—make up about 96 percent of the mass of living organis Thus, a first requirement for life might be the presence of most or all of the elements used by life.
The phrase "these elements" refers to ________.
选项
A、25 of the 92 naturally occurring chemical elements
B、the 92 naturally occurring chemical elements
C、the mass of living organisms
D、oxygen, carbon, hydrogen, and nitrogen
答案
A
解析
上文第2句中状语从句出现了these elements,其所指应往前找。前面提到地球上的生命仅用到了 25 of the 92 naturally occurring chemical elements,而although引导的从句进一步指出,在这需要用到的25种元素中,仅4种便可组成地球上96%的生命。因此,these elements应指代上文的25 of the 92 naturally occurring chemical elements有干扰性的是B项,但从第3句中的most or all of the elements used by life也可确认,这里指的是地球上的生命需要用到的25种元素,而不是92种元素,故A项更贴切。
转载请注明原文地址:https://tihaiku.com/zcyy/3942270.html
相关试题推荐
Charcoalmovesoverpapereasily,______goodformakingquicksketches.A、itisB、
_____aunicycleusuallyrequiresmorepracticethanlearningtoswimdoes.A、Lear
Researchintothechemicalcomplexitiesofthehumanbodymayyieldinsights____
AUnlessyouhavealreadyBplantedyourvegetablegarden,youcanstillCmakingc
Theprofessordescribesaprocessformakingglassdisks.Summarizetheprocess
RankedasoneofthemostimportantindustriesinBritain,themotorcomponents
PlasticandtracesofhazardouschemicalshavebeenfoundinAntarctica,oneo
Theypressedaheadwiththeliquidationofhostileelementsamongpeople.A、exami
Thetwoelements______waterismadeareoxygenandhydrogen.A、thatB、whichC、of
Thetrafficlawrequires______alltaxidriversandpassengerstowearseatbelt
随机试题
In1915EinsteinmadeatriptoGottingentogivesomelecturesattheinvit
Atpresent-companiesandindustriesliketosponsorsportsevents.Tworeason
Businessandgovernmentleadersalsoconsidertheinflationratetobeanim
正常血清总胆红素含量为A.0~6.8μmol/L B.0.7~1.7μmol/
上消化道出血为A.脓血便 B.鲜血便 C.柏油样便 D.灰白色便
早产是指A.妊娠满22周至不满37足周之间分娩者 B.妊娠满25周至不满38足
患儿男,1岁半。因低热、流涕1天,咳嗽、烦躁半小时就诊,呈犬吠样咳,伴有声音嘶哑
患者,女性,40岁,糖尿病史4年,突然昏睡,确诊为糖尿病酮症酸中毒,该患者尿液检
法国古典主义建筑作品中,()体现了古典主义的各项原则。A.凡尔赛宫总平面
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
最新回复
(
0
)