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题库 / OG2019-CR-597
A company has developed a new sensing device that, according to the company’s claims, detects weak,ultralow-frequency electromagnetic signals associated with a beating heart.These signals, which pass through almost any physical obstruction, are purportedly detected by the device even at significant distances. Therefore, if the company’s claims are true, their device will radically improve emergency teams’ ability to locate quickly people who are trapped within the wreckage of collapsed buildings.
Which of the following, if true, most strengthens the argument?
People trapped within the wreckage of collapsed buildings usually have serious injuries that require prompt medical treatment.
The device gives a distinctive reading when the signals it detects come from human beings rather than from any other living beings.
Most people who have survived after being trapped in collapsed buildings were rescued within two hours of the building’s collapse.
Ultralow-frequency signals are not the only electromagnetic signals that can pass through almost any physical obstruction.
Extensive training is required in order to operate the device effectively.
情景：一个公司推出了一个极其牛X的新仪器：能检测到微弱的心跳，穿透力极好，检测范围还不小。所以呢，可以说这个仪器可以大大提高救援队快速定位被埋人员的位置。
推理：
（因）前提：claim is true（仪器穿透力强范围广敏感度高）
（果）结论：救援队快速定位被埋人员的位置的能力提高。
因果推理。由于题目问的是加强，我们可以取非选项看看能不能削弱结论。
选项分析：
A选项：被埋的人通常收拾很严重，需要立即治疗：这和救援能力能不能提高没有关系。
B选项：正确。当仪器检测到人类而不是别的活物时，仪器可以给出一个明确的信号：结论说的是“locate people”，所以，如果仪器无法区分人类和其他活物的心跳，那么救援队救人的能力并不能提高很多，有可能忙活一场发现救出来的并不是人类。
C选项：大部分在房屋倒塌后幸存的人会在两小时内被救出来：和在多长时间内能被救出来没有关系，即使没有在两小时内救出，只要仪器能精准定位就可以提高救援能力。
D选项：超低频信号并不是唯一可以通过几乎任何物理障碍物的电磁信号：与此仪器能不能提高救援能力无关。
E选项：为了有效使用仪器，技能培训是需要的：讨论的是仪器可以带来的效果，而不是如何使用仪器。
这道题需要给出一个能够支持结论的条件，而不是一个已经发生了的事实。所以，不能选择C