揽瓜阁逻辑做题小分队 第53天

小白斩鸡

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1. When migrating through small streams to spawn, Alaskan salmon are an abundant, nutritious food source for local bears. Yet, even during salmon spawning season, many bears forage for berries and grasses and avoid streams with salmon. Some scientists believe that this is because more aggressive bears drive away smaller ones.
Which of the following, if true, would most help to support the scientists' hypothesis?
A. The largest and most aggressive bears typically derive most of their nutrition from berries, grasses, and other vegetation.
B. During salmon spawning season, berries and grasses are an abundant and nutritious food source for bears.
C. During salmon spawning season, the bears that avoid the salmon streams are typically smaller and less aggressive than those that frequent such streams.
D. The bears that avoid streams during salmon spawning season also generally do so during the rest of the year.
E. Many smaller bears regularly consume salmon during spawning season in areas frequented by larger, more aggressive bears.


2. A new handheld device purports to determine the severity of concussions by reading the brain’s electrical signals and comparing them to a database of 15,000 scans compiled at a brain research lab. The device is intended to help doctors decide whether an athlete who has received a blow to the head during a competition should be sent back into the game.
Which of the following would it be most useful to establish in order to evaluate the effectiveness of the device for its intended purpose?
A. Whether the database of brain scans will regularly be updated with new scans
B. Whether by use of this device doctors will be able to make a sound decision about whether to allow an athlete back into the competition before it ends
C. Whether the device will be endorsed by a large number of medical professionals
D. Whether the database includes scans of non-injured athletes in the same game as the injured athlete
E. Whether team doctors have until now been mistaken in their assessments of whether an athlete can safely continue to play





参考答案：
CB

miemie_yang

C D

CaryX

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sssszzzzxccsc

cb

h1hh

CD

vincentm9426

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辛西亞王王王

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Alan-Endless

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12121212133

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大月亮cyn

Day53
1. [Strengthen] C
P. S好且migrating时很充足，但许多Bears还是吃B不吃S     -->     C. 这是因为aggressive的熊把小熊挤走了 问增强 确实"       
A. 最大和最激进的熊主要吃Berries 削弱了 这群厉害的熊其实不吃S         B. B和G都很充足 那S也很充足 干嘛不吃 不选       
C. 不吃S的是比较小的没那么凶猛的 比起那些在streams附近（吃S的） √        
D. 无关信息 不增强不削弱 要有aggressive和small bears的比较        E. 削弱了 小熊们 吃S！没被大熊挤走
2. [Evaluation] B 如果不能在比赛结束前出结果那么这个设备就无用