首页
登录
职称英语
As a practical matter, the copper available for industrial use should not be tho
As a practical matter, the copper available for industrial use should not be tho
游客
2024-01-13
60
管理
问题
As a practical matter, the copper available for industrial use should not be thought of as limited by the quantity of copper deposits, known or unknown. The transmutation of one chemical element into another is a modern reality, through the methods of nuclear physics. Therefore, the quantity of a natural resource such as copper cannot be calculated even in principle, because copper can be made from other metals. Which of the following, if true, is the strongest argument against the argument above?
选项
A、Although it is possible that additional deposits of copper will be found, geological considerations strongly indicate that they will not amount to more than a fifty-year supply.
B、The production of copper from other metals in industrial quantities would be prohibitively expensive in energy and materials.
C、Synthetic materials have been discovered that can serve as practical substitutes for copper in most of its uses.
D、It will be impractical, in the foreseeable future, to mine any deposits of metal that may exist on the Moon or on other planets.
E、Methods for estimating the amount of copper available in currently known deposits have become very sophisticated and have proved quite accurate.
答案
B
解析
反对主要反对原因,尤其是当段落推理把“because—clause”放在后面时,往往表示强调这个原因,因此读题重点应放在段落最后一句话。当我们用原因中的关键词copper来定位选项时,发现五个选项均有copper(但这仅仅是一个个案,不能反对一般,大多数题目涉及关键词的选项只有2个或3个)。(B)中的“prohibitively expensive”具有否定意思,所以(B)是一个很好的反对。
转载请注明原文地址:https://tihaiku.com/zcyy/3358976.html
相关试题推荐
Personswhoareoverweightshouldwatchtheirdietcarefullyinordertolose
Thereisnoreasonwhyyoushouldtellthem______thatyouaregoing.A、foradvanc
______,weshouldbeglad.A、TheyarrivetomorrowB、WeretheyarrivingtomorrowC
Honestyisthemostimportant______amanshouldhave.A、effortB、habitC、quality
Peopleshouldwashfruit______withchemicalsbeforeeatingit.A、coveredB、cover
Weshouldalwaysbearinmindthat______decisionsoftenresultinseriouscons
TomsuggestedthattheyshouldgotoGreece,butMarysuggested______toSpain.A、
Youshouldn’tchangejobs______,orpeoplewilldoubtyourabilitytoholdany
______themanagerwillcomeornotdoesn’tmattermuch.A、WhetherB、ThatC、IfD、W
You______nothaveseenheryesterday,forshewasabroad.A、mustB、shouldC、cou
随机试题
WillTomhelpme?A、thinknotB、don’tthinkC、thinksoC此题考查日常交际用语。此句答语为:我认为如此。
HongKong’sEnglishnameis【S1】______fromtwoChinesecharacters,HeungandGong
巨大儿容易合并哪种先天性异常A.肢体畸形 B.脑积水 C.胎儿胸腹水症 D
患者,女,42岁,带下色白,清稀如涕,无臭味,临床意义是A.脾虚气弱 B.冲任
Therearenotmanyprofessorswhoarestr
某初孕妇23岁,妊娠38周,枕左前位。患者有先天性房间隔缺损病史。目前心功能Ⅱ级
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
下列关于犯罪形态的说法,错误的是()。A.故意犯罪形态包括犯罪预备、犯罪未遂、犯
诊断急性心包炎最具特征性的临床表现是( )。A.发热伴胸痛 B.心电图有ST
第二产程停滞A、从规律宫缩开始,经16小时宫口扩张至2cm B、初产妇宫口开全
最新回复
(
0
)