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
59
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
Onetypeofpersonthatiscommoninmanycountriesistheonewhoalwaystriestodoaslittleaspossibleandtogetasmuchi
Notallmemoriesaresweet.Somepeoplespendalltheirlivestryingtoforgetbadexperiences.Violenceandtrafficaccidentsc
Mr.Holmescalledatmanyschools______helivedtoaskthemtoaccepthisson,buthewasrefusedeverywhereforbeingablack.
The______goalofthebookistohelpbridgethegapbetweenresearchandteaching,particularlythegapbetweenresearchersand
Scientistsmeasuredtheimpactthatpeoplehaveontheenvironmentusingatermcalledcarbon"footprint."Thatfootprintrefle
Scientistsmeasuredtheimpactthatpeoplehaveontheenvironmentusingatermcalledcarbon"footprint."Thatfootprintrefle
MaggieWalkerwasbornin1867inRichmond,Virginia.Hermotherwasonceaslaveinarichwoman’shouse.WhenMaggiewasvery
Onlinedatinghasjustbeenrevealedtobeoneofthemostcommonwaystostartarelationship.Butnewresearchrevealsthatth
Visitorscannothelpbut______thebeautifuldesignofthepalace.
Inasetofmeasurements,therangeisdefinedasthegreatestmeasurementminustheleastmeasurement.Accordingtothetablea
随机试题
26岁初产妇,妊娠40周,来院时规律宫缩22小时,已破膜。检查:宫底剑突下3指,胎心在脐下左下方140次/分。肛查宫口开全,胎头S+4。本例正确处理应是
女性,28岁,脐周隐痛伴腹泻一周,大便呈糊状,无黏液脓血,近半个月发热盗汗,钡剂灌肠示回盲部激惹征,为确诊应首先选哪项检查
关于溃疡性结肠炎的治疗下列哪项不正确
冠心病病人突感心悸、胸闷,血压为12/8kPa(90/60mmHg),心尖部第一心音强弱不等;心电图示心房率慢于心室率,二者无固定关系,QRS波增宽为0.12秒,可见心室夺获和室性融合波。诊断为
关于法官的违纪违法职业责任,下列说法中正确的是哪些选项?()
道路改扩建项目。拟对某一现有省道进行改扩建,其中拓宽路段长16km,新建路段长8km,新建、改建中型桥梁各1座,改造后全线为二级干线公路,设计车速80km/h,路基宽24m,采用沥青路面,改扩建工程需拆迁建筑物6200m2。该项目沿线两侧分布有大量农田,
因第三者对保险标的损害而造成的保险事故发生后,保险人未赔偿保险金之前,即使被保险人放弃对第三者请求赔偿的权利,保险人仍应承担赔偿保险金的责任。()
税务行政复议期间发生的下列情形中,可导致行政复议中止的有()。
蒸发冷却是指液体在蒸发成气体的过程中会吸热,从而降低周围的温度起到冷却的效果。蒸发冷却效应是指在目的或志趣相同的人们组成的社会团体中,团体的价值跟液体的整体温度类似,当价值较高的成员离开社团后,社团自身的平均价值会降低。根据上述定义,下列属于蒸发冷却效应的
有以下程序,程序中库函数islower(ch)用以判断ch中的字母是否为小写字母#include#includevoidfun(char*p){inti=0;while(p[i]){if(p[i]==’’&&islower
最新回复
(
0
)