Research on animal intelligence always makes us wonder just how smart humans are. (1) the fruit-fly experiments described by Carl Zimmer in the Science Times. Fruit flies who were taught to be smarter than the average fruit fly (2) to live shorter lives. This suggests that (3) bulbs burn longer, that there is a(n) (4) in not being too bright.
Intelligence, it (5) , is a high-priced option. It takes more upkeep, burns more fuel and is slow (6) the starting line because it depends on learning — a(n) (7) process — instead of instinct. Plenty of other species are able to learn, and one of the things they’ve apparently learned is when to (8) .
Is there an adaptive value to (9) intelligence That’s the question behind this new research. Instead of casting a wistful glance (10) at all the species we’ve left in the dust I.Q.-wise, it implicitly asks what the real (11) of our own intelligence might be. This is (12) the mind of every animal we’ve ever met.
Research on animal intelligence also makes us wonder what experiments animals would (13) on humans if they had the chance. Every cat with an owner, (14) , is running a small-scale study in operant conditioning. We believe that (15) animals ran the labs, they would test us to (16) the limits of our patience, our faithfulness, our memory for locations. They would try to decide what intelligence in humans is really (17) , not merely how much of it there is. (18) , they would hope to study a(n) (19) question: Are humans actually aware of the world they live in (20) the results are inconclusive.
19（）
A.fundamental
B.comprehensive
C.equivalent
D.hostile
参考答案：A
解析：
本题考查形容词修饰question。各选项的意思分别是：A．fundamental(基本的)；B．comprehensive (全面的)；C．equivalent(相等的)；D．hostile(敌对的)。下文明确告诉我们希望研究的问题是“人类是否真正意识到了自己所生存的世界”。一方面，由此问题的内容可以看出这是一个很基本的问题，另一方面，根据18题我们所选的“above all”也可推出：首先希望研究的问题应该是最基本的问题。而B项全面的问题；C项相等的问题；D项敌对的问题均不符合题意，所以A正确。
