2. 考研
  3. Research on animal intelligence always makes me wonder just how smart humans are. 【B1】______the fruit-fly experiments described

Research on animal intelligence always makes me wonder just how smart humans are. 【B1】______the fruit-fly experiments described

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问题     Research on animal intelligence always makes me wonder just how smart humans are. 【B1】______the fruit-fly experiments described by Carl Zimmer’ s piece in the Science Times. Fruit flies who were taught to be smarter than the average fruit fly【B2】______to live shorter lives. This suggests that【B3】______bulbs burn longer, that there is an【B4】______in not being too bright.
    Intelligence, it【B5】______, is a high-priced option. It takes more upkeep, burns more fuel and is slow【B6】______the starting line because it depends on learning—a(n) 【B7】______process—instead of instinct. Plenty of other species are able to learn, and one of the things they’ve apparently learned is when to【B8】______.
    Is there an adaptive value to【B9】______intelligence? That’ s the question behind this new research. Instead of casting a wistful glance【B10】______at all the species we’ve left in the dust I.Q.-wise, it implicitly asks what the real【B11】______of our own intelligence might be. This is【B12】______the mind of every animal we’ ve ever met.
    Research on animal intelligence also makes us wonder what experiments animals would【B13】______on humans if they had the chance. Every cat with an owner,【B14】______, is running a small-scale study in operant conditioning. We believe that【B15】______animals ran the labs, they would test us to【B16】______the limits of our patience, our faithfulness, our memory for locations. They would try to decide what intelligence in humans is really【B17】______, not merely how much of it there is. 【B18】______, they would hope to study a(n)【B19】______question: Are humans actually aware of the world they live in?【B20】______the results are inconclusive.
【B5】
选项 A、insists on
B、sums up
C、turns out
D、puts forward
答案C
解析 考查上下文理解及短语辨析。前文说“聪明的果蝇寿命往往较短”，“不太聪明是有优势的”，由此推断出：聪明是有代价的。后面是对代价的解释，比如将会消耗更多的补给。因此C．turns out符合语境。从语法上看，it turns out…经常用来表示“结果是，原来是，证明是”，故选C。insist on“坚持”，sum up“总计，总结”，put forward“提出”，均不符合题意。
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