在职攻硕英语考试

【单选题】Research on animal intelligence always makes me wonder just how smart humans are. (51) the fruit-fly experiments described inCarl Zimmer’s piece in the Science Times on Tuesday. Fruit flies who were taught to be smarter than the average fruit fly (52) to live shorter lives. This suggests that (53) bulbs burn longer, that there is an advantage in not being too terrifically bright.
Intelligence, it (54) , is a high-priced option. It takes more upkeep, burns more fuel and is slow off the starting line because it depends on learning—a (55) process—instead of instinct. Plenty of other species are able to learn, and one of the things they’ve apparently learned is when to (56) .
Is there an adaptive value to (57) intelligence That’s the question behind this new research. I like it. Instead of casting a wistful glance (58) at all the species we’ve left in the dust I.Q.-wise, it implicitly asks what the real (59) of our own intelligence might be. This is on the mind of every animal I’ve ever met.
Research on animal intelligence also makes me wonder what experiments animals would (60) on humans if they had the chance.
A、features
B、influences C、resultsD、costs
网考网参考答案：D
网考网解析：
[解析] the real costs of our own intelligence意为“我们智力的真正成本。”其他三项均不符合题意。因此正确的选项是D。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>