首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Suppose we were in a spaceship in free fall, where objects are weightless, and wanted to know a small solid object’s mass. We co
Suppose we were in a spaceship in free fall, where objects are weightless, and wanted to know a small solid object’s mass. We co
admin
2019-11-17
43
问题
Suppose we were in a spaceship in free fall, where objects are weightless, and wanted to know a small solid object’s mass. We could not simply balance that object against another of known weight, as we would on Earth. The unknown mass could be determined, however, by placing the object on a spring scale and swinging the scale in a circle at the end of a string. The scale would measure the tension in the string, which would depend on both the speed of revolution and the mass of the object. The tension would be greater, the greater the mass or the greater the speed of revolution. From the measured tension and speed of whirling, we could determine the object’s mass.
Astronomers use an analogous procedure to "weigh" double-star systems. The speed with which the two stars in a double-star system circle one another depends on the gravitational force between them, which holds the system together. This attractive force, analogous to the tension in the string, is proportional to the stars’ combined mass, according to Newton’s law of gravitation. By observing the time required for the stars to circle each other (the period) and measuring the distance between them, we can deduce the restraining force, and hence the masses.
Which of the following best describes the relationship between the first and the second paragraph of the passage?
选项
A、The first paragraph provides an illustration useful for understanding a procedure described in the second paragraph.
B、The first paragraph describes a hypothetical situation whose plausibility is tested in the second paragraph.
C、The first paragraph evaluates the usefulness of a procedure whose application is described further in the second paragraph.
D、The second paragraph provides evidence to support a claim made in the first paragraph.
E、The second paragraph analyzes the practical implications of a methodology proposed in the first paragraph.
答案
A
解析
Evaluation
This question requires understanding that the second paragraph describes a somewhat difficult-to-understand procedure that the first paragraph illustrates in smaller, and simpler, terms.
A Correct. The first paragraph illustrates, hypothetically, a simple procedure for determining mass, and this illustration provides the grounds on which the passage explains the procedure of the second paragraph.
B The first paragraph describes a situation in hypothetical terms, but the second paragraph does not test that situation’s plausibility. Instead, the second paragraph draws an analogy between the initial situation and another procedure.
C The first paragraph does not evaluate the usefulness of the procedure for determining a small solid object’s mass while in a spaceship in freefall; it simply describes how that procedure would work.
D The second paragraph provides no evidence; it describes a procedure analogous to what is described in the first paragraph.
E The second paragraph does not discuss the practical implications of the first paragraph’s methodology but rather a procedure that is analogous to the hypothetical situation of the first paragraph.
The correct answer is A.
转载请注明原文地址:https://kaotiyun.com/show/vGkO777K
本试题收录于:
GMAT VERBAL题库GMAT分类
0
GMAT VERBAL
GMAT
相关试题推荐
Alawyerfriendofminehasdevotedherselftotheserviceofhumanity.Herspecialareaiscalled,publicinterestlaw".M
Donald:Let’seatout,shallwe?Debra:【D5】______I’vegonethroughmypaycheckfortheweekalready.Donald:Don’tworryabout
Mike:Itwouldbenicetogotothebeachsometimethisweekend.Carl:【D1】______What’stheweathergoingtobelike?Mike:It
Itwasnotmuchfuntotravelononeoftheoldsailingships.Lifewashardforbothpassengersandcrew.17thcenturysailing
Itseemslikeeverydaythere’ssomenewresearchaboutwhetherourfavoritedrinksaregoodforus.Oneday,sciencesaysagla
Throughoutthepastcenturyhumanitydideverythinginitspowertocontrolnature.Wedammedearth’srivers,choppeddownthef
Wehaveheardalotaboutthehealthbenefitsoftea,especiallygreentea.Itishighinpolyphenols,compoundswithstrongant
Greenseaturtles(海龟)aretheworld’slargestspeciesofhard-shelledseaturtle.Whilemostindividualsweighabout136to181
Don’tleavematchesorcigarettesonthetablewithinthe______oflittlechildren.
Visitorscannothelpbut______thebeautifuldesignofthepalace.
随机试题
属于中耳的结构有
女孩,6岁,突发腹痛1小时,以脐周为主,腹痛呈持续性,逐渐加重,发热,体温39℃,排正常大便1次。查体:患儿腹胀,全腹有明显压痛及肌紧张,移动性浊音阳性,肠鸣音消失。血常规白细胞19×109/L,中性粒细胞0.9。为进一步明确诊断,下列哪项检查最有意义
行政复议机关依照行政复议法第二十八条的规定责令被申请人重新作出具体行政行为的,被申请人应当在法律、法规、规章规定的期限内重新作出具体行政行为;法律、法规、规章未规定期限的,重新作出具体行政行为的期限为()日。
深化对职业和工作的认识,将学习成果和实践经验沉淀结晶,具体化自己的职业偏向的阶段是()
含磷脂较少的食物是()。
生物利用度是指
在诉讼进行过程中,下列哪些属于民事诉讼行为:()。在下列法律关系中,属于民事诉讼法律关系的是:()。
随着时间的推移,最终使得文字从()中分离出来,于是原始的文字就出现了。
假设银行体系准备金为15000亿元,公众持有现金500亿元,中央银行法定活期存款准备金率为10%,法定定期存款准备金率为5%,流通中通货比率为20%,定期存款比率40%,商业银行超额准备金率为18%,试求:狭义货币供应量M1是多少?
1935年红军长征胜利到达陕北,毛泽东写下了七律《长征》:“红军不怕远征难,万水千山只等闲。五岭逶迤腾细浪,乌蒙磅礴走泥丸。金沙水拍云崖暖,大渡桥横铁索寒。更喜岷山千里雪,三军过后尽开颜。”其中的“暖、寒、雪”,从地理学角度看,可以理解从金沙江到岷山的特点
最新回复
(
0
)